Customers $1,200 Chainsaw Destroyed! Husqvarna 372 XP Rebuild
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- Опубліковано 2 жов 2024
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Today we dive into a commercial customers Husqvarna 372XP that got hot and burned up the piston and cylinder.
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My name is Bre. I took two years of small engine repair at the local college. When I left school, I fell into a wonderful job at a local small engine shop where I worked the counter for a couple years. In 2010 my husband and I opened up our own small engine shop in central Arkansas where I am able to work alongside my family and best friends. We see over 2,000 pieces of small engine equipment every year, and answer 1,000's of small engine questions. We specialize in brands such as Briggs and Stratton, Kohler, Echo and Shindaiwa, but work everyday on MANY other brands like Stihl, Husqvarna, Honda, Craftsman, Remington, Red Max, Troy Bilt, Scag, Bad Boy, Hustler, World Lawn, Poulan, Mantis, Etc.. Hopefully, my experience I share, will save you Time, Money and Frustration in the future!
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Although very informative, these videos are for entertainment purposes. Please use all possible safety precautions when repairing and operating your small engine equipment.
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Being a Husqvarna Warranty repair person its up to me to determine if it was a mechanical failure or operator error. Which means i have to carefully check everything before and during disassembly . Which includes crankcase pressure vacuum testing. As always a great video 👍.
Yeah, no matter what during a rebuild you should always test the crank seals, those are the cause of top ends scoring with professionals
@@SomeGuysSawShopThis! The number one cause of a lean condition in a 2 stroke is leaking crank seals. Ran into this many times with 2 stroke mx bikes
Right, that saw will be right back with the same issue if it is a bad crank seal.
@@dirtyd491 i've also experienced it with 2--stroke outboards !
Chainsaw performance cannot be tested by simply revving the engine up. A chainsaw may run perfectly until you put a heavy load on it. Then it may bog down and require more carb adjusting. 2 stroke engines of this type also have a maximum RPM. The high speed needle is used to set max RPM.
I always use axle grease to hold a gasket in place as I put a head in place and I've never had any problems from the grease.
I’m surprised you didn’t do a pressure test. I would have at least checked the PTO side bearing for play and the rod for play. Also that saw still sounded lean on the start up. Sounds just like a saw before it runs out of fuel. I can never just fix anything. I need to know the problem that caused it in the first place. But either way I did learn lots of stuff over the years watching your videos. And no matter what you do people will criticize. Including me haha
Hi Bre, I'm in total agreement with Robert here. Pressure Vac test at this point would critical in diagnosis as to whether you need to do a total teardown. Did you have more info from the owner? Many thanks.
Sounds like a saw when it runs out of fuel? 50 to 1 is only 2% oil that is all the lube everything gets so when it runs out of fuel it’s out of lubrication. That was the first thing I learned when first using chain saws. Never letting them run out. I’ve never scuffed a piston in 65 years of tree work. Mind you not all of it was 8 hrs. A day.
Huskys are bad about popping crank seals on the clutch side . There should always be a crankcase vacuum test done. Especially when you expect damage from a lean out condition . Nice video
Thanks. I have a Craftsman self-propelled push mower with a 4-stroke Briggs that may need this. Knowing to oil everything good and do the rings burn in helps.
I have rebuilt alot of husky 372's that sounded way too lean on the test run. Those xtorq's were noted to wear the low end bearings or case pockets out then the seals would leak. The big end conrod was blue. Which may mean the cylinder went bad from running too lean from an air leak.
Yes, and they were really prone to intake boot air leaks, also...even if the boot looked fine...
They heat up to harden the crank end of the rod
Watched yr Husky trip the a few days ago. Saw u mentioned Kubota . I have a zero turn. Best mower I have ever had. Was wondering why u have never done a video on repairs to them. Have mastered the saws and brush cutters thxs to u. Keep up the good work.
the best thing about these videos are how real a person you are!
I did lots of those in 2005-2017 when I was a Husqvarna tech...have done a few since. I'm the first one to admit I despise doing pressure/leakdown tests, but a burned pro saw you are going to put back into service is the time to do one. That said, even if I KNOW the cause was straight-gas, I will usually put new crank seals in as insurance..don't want a comeback or to burn up a new $200 OEM P&C. I do remember, when the X-torqs were first introduced, we had a LOT of them come back burned up, almost new...lots of crank main bearing failures on those, which of course takes out the seals..if it's an X-Torq model, I definitely check the bearings and seals..also the x-torqs were known for having air leaks at the intake boot as well..all in all, I didn't care for the X-torq models, I'd much rather have an original design 372XP..the X-torq was basically a way to keep the popular 372 models in production, because the original design wouldn't meet EPA regs anymore..Everything on the X-torq on the top end was completely different/redesigned, and they have taller engine covers and handlebars than the OE version. Lots of customers didn't know the difference, and wondered why some of the parts from their old parts saws wouldn't fit their newer saws when they started to "Frankensaw" them...I always told them, if the compression release came up through the top cover, it's an X-torq...if the release is on the side of the cylinder, it's an original version 372. IMHO, they should have called the saw something else, like 374XTP, or something...but, they were trying to continue the popular 372XP saw without anyone noticing the changes, I suppose...
I'm glad to know I'm not the only one who was pulled aside on suspicion of explosive coffee.
I suppose I should have gone all Austin Powers on them and said "Back up, or I'll drop this coffee bean!"
Tip. Do not buy an RV. Rent as needed. Sorry, you had a bad experience traveling. Don't make things worse by owning an RV.
If you really want to buy an RV, get a used one made BEFORE COVID. Everything made since then is complete crap, and they doubled the price.
What's an RV?
@@artyfhartie2269Recreation Vehicle is what the letters stand for, but in this case they are talking about either a camper or a bus.
@@ToddAdams1234 Thanks 👍
I’ve owned RVs since 1985. It’s some of the best experiences my wife and I’ve ever had traveling across the country. Yes, you do have to do maintenance and things do break but the experiences you gain from traveling around in one can’t be beat. Don’t listen to the naysayers. I flew or a major airline for 35+ years and stayed in 100s and hundreds of hotels traveling by RV is great you sleep in your own bed and use your own bathroom another perk if you will😁😁
Great video!! This was almost as good as doing it myself.
Good job kinda souredafter waiting 3 months for parts for husqvarna parts for trimmer, but that saw soundsgood.
THANKES HAPPY HOILDES YVON LEVESQUE FROM NEW DENMARK N.B
That is a great idea to clean it up before you go to take it apart . bre The 2 cycle equipment repair queen 👑
Personally I check the crankseals with every rebuild as well. 😉
Your the best, and that's from an old logger chainsaw guy. Keep it up. Happy holidays.
Great video Chickanic. I have put many of your videos to use!!! Was the piston kit at a lower price than before you met with Husqvarna? BTW. I quit flying several years ago because of the airlines. Thanks.
When I was told they were going to x ray me or MRI me I thought, no your not. And I am aware of the DEA randomly stopping people and taking their cash, civil asset forfeiture, then you have to contact an attorney and fight for your money. Nope, I'll just not fly. Ron Hubbard, dianetics fame, travelled all over the world by ship, he was visiting gurus in Asia. I don't mind taking a ship. People are blase' about air travel, I think it is an adventure.
Same here. My wife and I go out on road trips these days. No more flying. Too bad; we did enjoy flying once upon a time, but now you're just herded like cattle and treated like a terrorist. Life's too short for that nonsense.
Appreciate the in-depth disassembly and re-assembly.
As far as RVs... If you could find one with a small 2-cycle engine, you could easily repair it if it were to break down. Though I doubt it would ever make it out of a driveway 🤣
Seriously, you might consider a pop-up, small tow-behind, or truck bed camper. We like all 3 options for different things. My overall favorite (in theory since we don't have one) is the truck-bed type with pull-out sides. Not the biggest, but seems like the most flexible.
Great options and for many different reasons. My cousin who always vacationed with 8 or 9 people got a used small towable camper with a small eating and sleeping slide out. Since the camper was mainly to be used for sleeping, eating fast food on occasion or food off the Coleman stove and only hanging out in bad weather, he ripped out the kitchen, except for the upper cabinets, the closet, the refrigerator and stove (I think he added to the shower toilet space, some tote storage as well ) and converted all the open floor and wall spaces into sleeping areas with some shorter upper bunks with folding side rails for kids, that all folded up or back against the wall for more seating and table room. 3 kids and 5 or 6 adults could eat and sleep comfortably and shower and use the bathroom. He made an extra lockable metal storage bin for extra items, totes and necessities like paper plates, cups, cooking utensils, tools, rv supplies, outdoor games... beach toys, and a nice size cooler....because he also removed the fridge, And added a platform to hold it just above the rear bumper. It has its own fold up lockable ramp that folds down to roll it on and off the platform because it is on small wheels. They would drop the box at their garage and go park the camper in the storage lot, leaving the box home for them to restock and organize with all the necessities for their next trip. Then they would get the camper load up the box and go! Chickanic....You and your husband are very talented and could thoroughly inspect and find a good solid camper to convert, and in a couple seasons could easily do something similar for just 7 people that would be really budget wise! They always had the best of times taking that camper everywhere because it covered their most basic and costly on the road needs. Some people like the idea of camping and staying put inside the camper for days without stepping outdoors, but they were always in and out of that thing doing something and having fun because it was small, easy to tow, and could be used almost anywhere. Only did the weather ever hold them hostage inside. Good luck! I hope if you go that route that you decide put it on a channel for us viewers, because you not only are cool and great personality on camera, but there are lots of people who can't pin down the basics of a camper or motorhome and get in way over there heads on what they think they need to have, in order to have fun! Later! J Pol..
I'm glad to see that Husqvarna made the bottom of the cylinder tapered. Quality machines. I would suggest not pouring gas from the tank toward yourself. I always wondered if running the saw for hours would overheat it. Now I see it may be the fuel mix. I hope your husbands leg is better, I guess so if y'all went to Mexico. I'm also glad to see you warm up the machine. I hate arguing with people about warming up a 600 dollar saw or whatever 2 cycle equipment before using it. Wait was it his shoulder?
I let my weedeater and BP blower warmup/run before i use always.
Excellent video. Professional.
Hope you checked crank bearings for play causing air leak. Under side of piston burnt is sign. Definitely would recommend seals atleast and clean tank with new feul filter 🔧🔧 gas that come out looked like dirty paint thinner lol . Definitely recommend checking crank bearings and seals on saws or lean failure can happen again even if seems to run good after rebuild. Very nice job you're the best 🔧🔧🔥🔥🏁🏁 maybe you did check just dud show. I have a 575 on bench right now same deal. Was rebuilt few months ago just top end. PTO bearing spun causing air leak and burnt up again 😃
I’ve had very good success owning Husqvarna over the years , 3 of them and I never lost a days work !
Jonsered 2065 was and still is one of my favorites, terrific chainsaw !
You did well on the repair and I learned a few things watching you !
Regarding an RV vs airline. Great idea there's lots of places to go, see and do. DO NOT purchase an RV. Doing so is a great way to lose money to depreciation and discounting when time to sell. Depending on level of use I recommend you either rent for each trip or lease one for a specific time. Our experience was buying a used 45' repo bus with 4 slides. Pretty much rebuilt all systems to keep it on the road. Sort of like a chain saw, it's great till it's not then your at mercy of a dealer/repair who has too many in que for repair and they over charge for simple repairs. Good luck. Thanks for your Channel. I think your video' are awesome. Merry Christmas
Great video I learn so much from you Thanks
They're called wrist pin clips and there is a specific ring end gap spec'd for that engine. My ring gap tool is a Goodson PRF-250. JS
Great video! Great saw! Curious what the customer was running for mix and or why it may have gotten hot. Husky recommends 50:1 but I have heard of these newer husky saws especially the 572 XP and 550XP run lean from the factory. I run my huskys at 40:1 and 32:1. Echos at 50:1. A free flowing exhaust seems to keep it running cooler as well.
Just remeber the more oil the leaner the air fuel mix is the oil takes up cylinder space you must adjust the carb acordingly ,most people forget the point its a 2 stroke and thats how its oiled ,i have always run my 262 xp at 50 to 1, bought it new in 96 ,be sure to use the best 2 stroke oil ,as a skidoo dealer i used there bombardier injection oil ,it was proven to have the lowest viscosity back then ,and least carbon buildup ,castrol is good as well .
I always say who cares if a saw has been run for 25 years one hour per year at 50:1. Lets see that saw run 150hrs per year at 50:1 for 5 years.
I run 42:1 because 50:1 is an EPA ratio to meet emissions certification standards with no regard for engine longevity.
@@davemcewen9991 The bigger point is that more oil makes the fuel mix more viscous, thus less flow past the metering screw which means whenever you change brands of oil, or mixture ratio, you should re-adjust the metering screw.
gotta love the 372's. the cast crankcase means you can rebuild them forever if you watch them. crank bearings and seals every other jug unless it doesnt pass a pressure test. newest versions fixed the muffler issues but the new muffler is not backward compatible (no screw holes in the crankcase) i always warned customers that all that piston and cylinder scoring may have got to the crank bearings. it was thier choice.
Oh my god your story is giving me flashbacks from our honeymoon!!!! American Airlines did the same thing to us in 2001. We arrived at the airport at the appropriate time. We were not informed of the change till we were at the gate. The crappy thing is the workers acted like it was to bad. Thankfully my new wife went full Karen on them and got us a flight back home, we got upgraded to first class. So it worked out for the best.
Thank you for your explanation on this. I’ve learned so much from watching your videos. They have saved me time, money and frustration, for sure.
Glad you had a good time in Mexico.
Pressure and Vacuum testing a saw that has run lean is recommended ? I know that I would not just drop a new cylinder kit on with out a definite cause. May someone was playing with the mixture and she was told. The new filter gets me thinking they may have leaned it out with a dirty one . Put on a new one and it was to lean for all that extra air flow. Leaned out cylinder/piston burn has me asking a lot of questions or doing all the tests.
That is a lifetime saw. Absolute workhorse, I will never give mine up. Old school pre EPA monster.
Not quite a pre-EPA monster..the X-Torq versions of them(this is one of them) made from 2010 onwards, have significant redesigns to the top end(piston, cylinder, intake, different carb, etc.), because of having to meet EPA requirements...they are definitely not a "pre-EPA saw"..and also why the later versions seem to have more issues than the original versions....
@@dyer2cycle glad mine is an OG 372XP.
I have never ruined a chain saw engine because I have never loaned out a saw and have always mixed my fuel rich with oil. The 372 XP old version is to me one of the best saws ever made. Fast chain over the bar and gobs of power. I have them down to the 5.5 lb. Echo and up to the massive top of the line Huskys, but I'll take the 372 XP to my grave.
372's are like gold around here. A straight gassed carcass goes for $400 IF you can find one!!!
Tech Tip for getting the piston re-assembled to the conrod: Turn the saw perpendicular to your line of sight, so your able to "see through" the eye of the con rod. Assemble the wrist pin on the blind side of the piston so that you can see the alignment as you work. Leaving the piston dry until just before cylinder installation makes for easier handling. I like a little engine assembly lube on the wrist pin needle bearings but nothing wrong with a bit of engine oil instead.
Bre, I HATE Dallas Airport and AA and can TOTALLY relate with you…
Great video!!! Just make sure your bottom end isn’t full of aluminum slurry before assembly and clean that out with mix. I like how liberal you are with pre lube!!!!
I spray the crankcase full of brake or parts cleaner, slosh it around, then turn it upside down and pour it out...then spray it out again with cleaner while it's upside down..dry it out, then pour liberal amounts of 2 cycle oil in the crankcase, let it sit, then rotate the crankshaft and leave it in there overnight. Then pour the excess oil out and re-assemble top end...
I just love a woman like Chickie. So very smart. Great sense of humor. Beautiful. Hey where do we needy fellows find such a catch. Your spouse is one lucky guy !!!
When installing a new cylinder I find that by catching the 4 bolts before the cylinder is fully down it insures that the gasket is aligned properly.
Is synthetic oil actually the right 2 cycle oil to use for Husqvarna chainsaws? Love you're Channel please keep up the great work!!!
This channel is worth watching even if you don't work on your own stuff, Very informative ane entertaining.
Old school tip: use the original Slick 50 formula, now being sold as Xcelplus as assembly lube. It gives conventional lubrication for initial startup, and permeates the metal with Teflon like polymer after just a few seconds of running. This polymer will reduce friction nearly indefinitely in a 2 stroke or 4 stroke small engine.
Welcome back! Thanks for sharing your amazing knowledge 🙏🏿🇺🇸
Stihl silver tech here, typically with a scored failure, you do a pressure and vaccum test on unit before tear down to find possible other issues that caused the lean failure, crankseals, cylinder gasket, intake manifold, etc. Otherwise you could end up with same failure again if it was compromised. And after you install your new top end etc, you do another pressure and vaccum test to check your work. Also that saw sounded lean in the video, you could hear how it was idling down she is sucking air somewhere
Winding down on heavy air. That saw will need another top end soon. No proper diagnosis cost ya money.
@@mweba1 exactly
I just replied to her video with the same comment. Good to have someone else say the same
Without proper diagnosis the piston will score again. You must find the original reason it scored. Hole in the fuel line, hole in the intake boot, bad crank seals, whatever it is it must me found and fixed.
Yes. I could hear it was lean too. it bogged a bit when she hit the throttle and idled funny when she stopped revving.it. Those Husky cylinders with the removable transfer port covers are known to leak. but it could also have a bad crank bearing or seal. Also it looks like an XPW and not an XP with a piston like that
Great video for saw owners who may be intimidated by a top end repair. Please do make the ring seating video! In a commercial setting where time is money, both P&C are replaced, but most often in this situation, the apparent scoring on the cylinder is actually aluminum transfer from the piston, and the cylinder can be cleaned up. The lean heat actually melts the surface of the piston. The plating of the cylinder is very hard and resists scoring. Aluminum transfer can be removed by muriatic acid (HCl) or saturated aqueous sodium hydroxide (NaOH) or flap sanding. Because muriatic acid gives off nasty fumes, I use NaOH on a Q-tip. It will foam slightly, dissolving aluminum and liberating hydrogen gas. This is followed by light honing. There are some good aftermarket pistons such as Meteor which are less expensive and generally regarded as OEM quality.
Do a thorough pressure/vacuum test on the saw before you give it back. Make sure the crank seals and or the cylinder gasket isn't leaking. Great video as always Chickanic, glad you're back.
If you didn’t want to completely break a saw down couldn’t you just do the Brake Cleaner spray test to look for air leaks ?
@@shannonwhitaker9630no because how are you going to spray brake clean behind the flywheel and clutch to see if crank seals are sucking air?
Considering layover times we decided to drive from Utah to Virginia, saw the country, visited family and had a better time than if we had flown. Flying isn't what it once was.
I would rather ride a bicycle than fly.
Just a tip from an old aircraft mechanic. Save the old pin and taper one end on a lathe and this makes a great tool to line the piston pin hole with the rod hole. Save it for the next one.
@waynejohnston2408 Hey Wayne. Serious question. If you use the old pin that you had to drive out.....as a guide to align the new parts..... Aren't you basically going to have to drive that pin completely through as you follow it in with the new pin? And couldn't it possibly damage the new bores if that old pin is just a smidgen tighter in the new parts than the old parts? I've seen great mechanics actually put a small chamfer right on the new pin without complication, which makes it a breeze to insert fully. Just asking. Have a good one! J Pol.
@@jpol3808 A) why would a worn used pin be larger than an unworn New pin? B) common sense would tell you to not do this with a used pin that is so trashed that it has raised burrs. C) you'll NEVER see a great mechanic put a chamfer on the new pin, FFS you have no idea how these parts interact, putting a chamfer on the pin that will be run causes a GIGANTIC problem with the method of retention....
Please don't ever attempt replacing a piston, over thinkers tend to come up with solutions to problems that don't exist, often with detrimental outcomes. This job is done daily on tailgates of pickups out in the woods.
There are pin press tools made for specific applications and for generic applications she doesn't use them so I doubt she'd use this method. No slight on her though, it's just more tools to keep track of and find when they're needed. Spend 5 minutes getting the tool as opposed to spending 5 minutes tapping out the pin with the tools you're using for the rest of the job.
Just a tip from an old machinist (just the tip ma'am): small 2 stroke pins are hardened close to 60 Rockwell on their OD... Have fun smoking cutters in your lathe. An old 3/8 drive extension will knock out damn near all chainsaw pins. You're welcome.
@@truracer20 Since your only trying to bash me and I had asked that man a serious question.... I'll still answer yours. A. Mass Production. Contracts changing hands and companies moving overseas, where production standards are not as critical as in the U.S.. Plus your dealing with 3 actual parts and 3 possible manufacturers.😞👎 B. You are correct. Don't use a trashed pin! Good job! 👏 and C. Great mechanics have and will continue to slightly 0.001. - 0.003. chamfer most anything! We're not talking about sharpening a pencil here!😂👎 Lastly... Stick to tailgates! Oh.... Look at the comment above 👆of using an old 3/8 drive extension. That's great! You see a truly great mechanic is past the level of having to bash others to be better than them. They are at the level of passing on what works well for them, to make you better! Lol. Thanks for bashing me though, It truly has been fun! 🎉 Ttyl!🥱.
That’s amazing that you can buy a cylinder and piston kit
That electrical socket behind you looks really surprized - just cant get my eyes of it😅😅😅
Anyways - thanks for yet another good and informative video👍👍👍
I missed the part where you checked ring end gap?? Do you have any de carbonizing system? burnout the muffler with a gas (LPG)burner or put it in a caustic tank??
I don’t have an RV but watch a fair number of RV channels. They’re expensive and cheaply made. There are nightmare stories even when purchasing new. Watch - Liz Amazing - She has a recent series on lemon RVs here on UA-cam where she advises an RV inspection even when buying new.
RV purchases often provide the buyer the two happiest days of their lives. The day you buy it and the day you sell it.
AMEN!..well said!...those were the best 2 days of mine!! ..to be truthful, the day it went away in the distance was better than the day I got it...I've never owned a boat, but I hear that is the case with them, too...
Darlin I love the way you explain it all in English in detail. You diagnosed the problem, got the new parts and even mentioned the prices plus tax! Lol... All in like 5 minutes, love it:-) okay going to watch the rest of the video now...
Might try looking through the rod towards the wrist pin to locate the "honey hole".
Great video for saw owners who may be intimidated by a top end repair. Please do make the ring seating video! In a commercial setting where time is money, both P&C are replaced, but most often in this situation, the apparent scoring on the cylinder is actually aluminum transfer from the piston, and the cylinder can be cleaned up. The lean heat actually melts the surface of the piston. The plating of the cylinder is very hard and resists scoring. Aluminum transfer can be removed by muriatic acid (HCl) or saturated aqueous sodium hydroxide (NaOH) or flap sanding. Because muriatic acid gives off nasty fumes, I use NaOH on a Q-tip. It will foam slightly, dissolving aluminum and liberating hydrogen gas. This is followed by light honing. There are some good aftermarket pistons such as Meteor which are less expensive and generally regarded as OEM quality.
Your airline experience illustrates why most of us hate flying. It's fine in the air, but on the ground there is constant worry about cancellations, delays, and missed connections. At least you had a fun trip and got some natural highlights from the Mexican sun😍.
Hope Bre, will comment on your aluminum transfer removal. Seems the way to go for diyselves but of course, you would still have to identify the root problem if you don't want to be redoing the repair in the near future !
@@danielrobert7181 Absolutely! I learned that the hard way when I did a top end on my 034 years ago. It was the first major repair I had ever done on a chainsaw and I was shockingly ignorant about 2-stroke engines - it was a repair that had to be done quickly to finish a job. I bought a new Stihl piston and rings, cleaned up the cylinder a bit, and reassembled. It only took a few minutes run time to realize that something was very wrong. On disassembly, the sparkling new piston was once again starting to score. I had yet to learn the importance of crankshaft oil seals, the original cause of the failure. The combination of innate mechanical aptitude plus lack of knowledge can be expensive!😆
I am also intimidated by bottom end repair
@@fair2middlin Top end repair compared to bottom end repair is like appendectomy compared to heart transplant 😧
Great video. On the RV topic I would strongly recommend renting various classes, A,B,C, travel trailer or a fifth wheel if you have truck to pull one. Rent before you consider buying. If you buy, never buy a new one. They are like cars and depreciate quickly. Also, RVs are one of the few things that you get what you pay for. There are just a few quality manufacturers. Avoid Camping World completely.
Ok
As an arborist, I get so excited to see your chainsaw videos. I've run a lot of stihl and husqy and just bought my first echo, would love to see more saw rebuild content, especially tophandles and professional models.
Pounding the snot out of it with a dull chain is likely the cause of failure. Over revving.
Most damage as this while using the correct oil fuel ratio is caused by wide open throttle when first starting. Give the saw some warm up time. This is common on all saws used in commercial and esp construction.
For air cooled 2-stroke engines, I don't think it matters much. Usually a cold engine has some extra oil in the crank case left over from the evaporated gas from the last run, and it won't rev far until it runs through, and smoke a lot while it is burning up the oil. If they are water cooled though, putting to the coals to it with a cold cylinder as the piston gets hot and expands can seize/scuff up a top end. The water needs to be warmed up so the cylinder will expand with the piston. Water cooling would be better for commercial use I would think, if not too heavy.
Wrong answer, I worked on saws and know through experience what happens if you wide open throttle a cool saw engine over and over. The exhaust side of the piston expands much quicker and requires more lubricant which the fuel lubricant gets burnt up and when you do that you heat stress the metal and it will break down and scar. @@EarthSurferUSA
And being a new saw its doubtful that the carb was at fault. These new saws run lean and using 50:1 mix IMHO is too lean which exaggerates cold start engine failures.
Jak dla mnie jedna z niewielu dobrych pilarek husgvarny.
Sounds like a real hoss!
LocTite releases at 300 f.. how hot do the muffler screws get?
Thanks for the video.
Red Lock Tite? Wouldn’t blue have been a better alternative for future services?
Personally, my wife and I drive and get a hotel when we need to rest. Can buy a lot of hotels for the cost of an RV.
I usually just beat the cylinder down on to the piston and it'll shear off the excess rings sticking out of the ring grooves...😮😮😮
When I traveled to Japan, we had one hour to get from one airport to another to catch the next flight. During that hour, we had to claim our bags, clear customs, buy a bus ticket, find the bus, ride to the other airport, then check in at the other airline. Japan has a very efficient bus system, so we made the connection without issues.
Do you need to use any silicon grease or gasket glue on the mounting gasket?
American Airlines is the worst of the big ones and it’s not even close, terrible experience every time
Wondering why you unscrew using power but replace screws by hand. Torque?
A lean condition in a 2 stroke is leaking crank seals 99.9% of the time. The number one cause of leaking crank seals is worn crank bearings.
Glad you are back from South of the Border. Hope you had a great trip. As always, your videos are clear and well explained to help us avoid the pitfalls of 2 cycles.
Was the green screwdriver set made by Wera? Because they typically look like that.
I recently came across your videos. Nice work!
THANKS for this 372 video. I just put one together and you answered my question on where that 1 longer handle screw went for sure! 😅 Thanks!
A saw rebuild series on different models could be an incredible addition for your channel maybe!
I would love to see your ring seating video! Does it matter for the size of saw ? Great videos thanks! I'm glad you have the strength to stand up to the big companies, you truly are for the common customer. Thank you!
Not letting the chiansaw heat up before, using will also do it.
No RV'S they are money pits!
The aftermarket kits do infact come with piston clips (circ clips) I’ve never seen a kit come without them even the farmertec kits or even no name white box kits have them
Chickanic knows her stuff and then some. Never underestimate a good chickanic. 👍
Great Vid, thanks. Is there a torque spec for the cylinder head?
Great to see your back. Can’t wait to get more videos like this one. You explain everything so well. I can’t wait do a job like changing a piston & cylinder. Till next time
Thanks again
DLCR
El Paso ,Tx
Plane travel over to Europe seems to be even worse. I'm hearing multiple stories from relatives and clients about their nightmare travels as well. I'm not much of a world traveler these days, thankfully. My advice would be just be happy with activities close to home. Simple living seems to be the way to go.
If I was visiting Mexico, I would contemplate just driving, or riding bus/train etc...
I have that saw its powerful saw. One tip I like to do is let it ideal for a little to warm up.
Good video.
Good to know that I'm not the only one that quotes Happy Gilmore when dealing with uncooperative parts.
"Why you don't you just go HOME? That's your HOME! Are you too good for your HOME?"
If you watched the Lehto Law channel, he has numerous videos about why you should NEVER buy a RV. Steve Lehto specializes in automotive lemon law.
Mesin tipe 372 mirip dengan 365. Apakah cylinder nya bisa di pasang di 365 nona ?
Really enjoy your videos. You keep it simple and to the point. What do you think about muffler modifications to chainsaws? Good or bad?
People who make videos like this are often reluctant to give certain advice it seems. Stands to reason because we aren’t supposed to modify things. We do it anyway right. I’m not an official certified experienced mechanic or anything of that sort. I will say however my old 026 definitely ran better with a quick muffler adjustment. Yep a little louder as a negative but it needed to be opened up a bit. I’m getting ready to slightly mod the muffler on my FarmMac F380.
Great video, and very timely.
I'm about to do the same with my 372XP. Did you get the carb kit from Husq. dealer, ot use an aftermarket kit? I haven't been able to get kits from Stihl anymore, they just want to sell a replacement carb (which is very frustrating). Do you have a source for carb kits? If so can you post? thanks
Nice work Bree, perhaps the total bill would be $400 give or take.
Perhaps cheap or incorrect 2-stroke oil could have been an issue.😊
Wouldn't that be a bad day to forget the oil in the gas. I thought I did that but thank God I was wrong.
@@mystuff1405 why I love Stihl blue oil in Australia which has changed you knew it was mixed.
Green colours are hard to see sometimes.
Stay away from motor homes.
They sit for long periods of time and you know what that does to an engine. In addition you're limited in what shops can work on it.
Go for a fifth wheel.
You can use the truck every day and any shops can work on them.
Also, check that you can get to the toilet when everything is packed up for the road.
Happy travels.
As to doing all the testing, I didn't hear if you did or didn't. As you know and have shown, pulling the rope will give a good idea of compression. Pulling the muffler to put an eyeball on the piston shortens the work time. And using the scope to look inside works too. I don't always run the tests unless I feel I need to.
Any tourque # needed on cylinder head bolts? I had to take mine apart again after running since bolts loosened
Nice job. I'm surprised you didn't use a torque wrench to tighten the cylinder down. I know those chainsaws have some pretty tight tolerances. Price aside, I'd never use aftermarket parts on a saw. The variances can be just too big especially for those big saws.
I traveled plenty in my 20's (back in the mid to late 80's), mostly for work. I hated flying then, it is absolutely insufferable now. My wife wants to take me to Brazil to meet her family this spring. I am researching medications that will keep me knocked out for the duration of the flight.
Good good and good.
Love your running commentary and advice.
Allow me to offer a few suggestions based on my own experience:
1. I have replaced the carbs on all my small engines (both 2-stroke and 4-stroke) with very inexpensive after-market products. Every one has worked perfectly. The caveat is that at less than $20 apiece I can afford to do it every year if necessary, and the job is so easy I can do it in less than an hour. So no worries about labor cost and down time in the shop. Obviously I don't recommend this approach for a non-DIY.
2. We travel outside the US frequently, so we have found that the government's Global Entry program is worth its weight in gold ($100 for five years). GE speeds you through customs and gets you into the US in a heartbeat. I can't help but think that might have enabled you to catch your connecting flight in DFW and saved you the Time, Expense, and Frustration that you had to endure on your return trip.
That said, I am glad you had a great time in Mexico. I'm not a fisherman, but I do like Cuban Rum. Can't get Havana Club 7-year here, so we try to bring some home whenever we are abroad.
Hope you all are having a good holiday season and a great year in your new shop.
Thank you for a great video. Please keep them coming.
Hopefully you checked crank bearings , they are known to have issues. Cheers 🍻
Have you ever seen an exhaust restriction (clogged exhaust) causing the same symptom?
Personally I like to install cylinder with the carb already attached. It is easier to make sure the boot is sealed well...👍
I started doing them this way as well for that exact reason, I just got done putting the big bore kit on my Makita 6401this way because of what a pain it is to line the carb back up
@billyboy861 Especially models like the 372 that are know for boot tears or not sealed well from people tugging on them when bar is pinched. I find most of her video informative but not finding the reason for running lean. I can't but help feeling it will be back soon...
@ 13:38....I like it.
Always check the crank seals .
Love the new shop..not crazy about huskvarna equipment..see you on the next one cheers 🍻🍻🍻🍻
This is an excellent video by any standard, but, as it happens, I have a Husky 372. So that's nice.
Thanks!
I think everyone should have an RV. After a couple of years, you’ll consider yourself a qualified electrician, plumber, carpenter, and HVAC specialist.😊