Briggs and Stratton opposed twin engine fuel pump replacement (3 screw type)
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- Опубліковано 20 сер 2024
- 3 screw fuel pump (Walbro) 272638S: amzn.to/3O27L8u
4 screw fuel pump (Nikki) 693502: amzn.to/41Bibiw
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This Craftsman rider with an opposed twin engine was hard to start and sometimes wasn't getting gas to the carb. I found out it didn't have a fuel filter so installed one, but at the same time spent the $5 and put a fuel pump on it which I show you how to do in this video. Now it starts right up and is ready to sell!
When I hear there's a job that's going to take 5 minutes I take this as a personal Challenge and I guarantee I can get it done in under 1 hour.
That is a great easy to follow video!
I have an old junker rider out back in the tall grass.
It has a 14 opposed IC Engine on it. Your video got me thinking, I need to bring it back to life.
Ya know its videos like this that helps us old shade tree mechanics to get er done.
Thanks for sharing this great engine helps with us!
Take care and stay well.
Thanks for watching! If you decide to get it back going, good luck on the repair!
You're correct the 4-screw carbs are the Nikki carbs, put a rebuild on mine last April including new fuel pump, definitely fixed my intermittent idle issues. Same engine as well, B&S Opposed twin 19.5hp, 1999 Craftsman mower. When I had an odd starting issue I removed the red top & exposed the flywheel, had light surface rust so sanded all around the sides w/some 180 grit sandpaper. Really cleaned up nice & exposed the 2 main contact points the ignition coil looks to, helped the starting issue but ended up putting on new ignition coil & no issues since. From my experience with the BS opposed twin & everything I've read, just keep up the maintenance & they'll last. Mine's 20 yrs old this year, doesn't blow any smoke & starts just like yours in the video. Nice video & best of luck on the sale!!
Thanks for sharing your experience, these opposed twins are great. Had one with a bad coil last week along with partially clogged jets in the fuel pump. They have their gremlins but yes they don't smoke and are very powerful.
The big spring retain er on wrong
Some guys bypass these fuel pumps but i like making them stock again. Good work. Your spilling gas like me. I swear those B&S twins are the best small engines made. Start it cold the next day as us old guys say.
The Briggs opposed twins are excellent Bruce. Fought spark issues with one last week but think I finally got it sorted. Replacing the original pump is cheaper than bypassing it and putting an external one on it so trying to keep it original. Worked 20 years that way so why not keep it the same?
Oh so it is by passable that's good.
I'm upgrading mine to a 4 screw one instead of the 3 screw
When I drip gas in goes right into the dirt until i can get some gravel put down
Well glad you're fixing that classic engine i broke the plastic part that is under the top of carb on my twin Brigg, s that is on the powr Kraft mower one of the Lt 1000,s has a twin 19.5. Brigg,s the mower you did the work on
Has brush guard i need one for the other LT now got replace the dc amp meter on one of the LT,S cant read it the other thing is the LT with the 17.5 ohv is not charging the battery got to figure that madness out later young man also Hope you can get that classic Lowe,s mower up & running like she did back in the in the day
Thank you, hopefully you'll get yours sorted out too!
I have 3 of the Nikki6 style carbs, but, I prefer the 3 screw fuel pump version instead. I am fond of the low speed adjustment screw. I run the 3 screw on my Industrial 20 Hp Opposing Twin.....she's purrs like a kitten!
The 3 screw type is a much better carb.
@@EllisMowersandmore I'm TRYING to find the older 3 screw fuel pump with the High Speed Mixture Screw that's made into the fuel bowl drainage screw. They are the very best carb for these opposing twins.
Ive got a craftsman 19.5 hp i/c opposed twin briggs and stratton engine myself project im attempting to turn into a utv town driver as another transportation besides bicycle riding and as a form of advertisement for my bicycle and small engine repair service im trying to get off the ground
Sounds good. Good video on how to put on a fuel pump. I haven't come across a twin cooled engine yet but i know i will eventually and if i have the same problem i know what to do.
Thanks John, 2 types of carbs but same premise in fixing both. You'll get a twin one of these days!
“Turbo cooled” ooohhh how exotic!
Haha yes just that special shroud. Wonder if it really does run cooler that way?
@@EllisMowersandmore as long as it does the job.
Mine ran so cool it threw the top rod out of the inspection plate.
I have one exactly like this but it's from 1999 instead of 97 the engine is identical to this one and the sticker on the side of mine says briggs 19 turbo twin cylinder witch is a little misleading for people who dont know any better. It's the only one I've seen that says turbo twin instead of turbo cooled but the engine says turbo cool
Those opposed twins are awesome engines! Some of the best engines Briggs made IMO. Have you ever tried compounding and waxing any of those oxidized metal hoods & fenders? Wonder if they’d come back to life with a little work from a D/A machine (or a little elbow grease if you don’t have a D/A). Just finished another Toro today and compounded / waxed it, looked like the day it rolled off the line when I was done. Got the full asking price no haggling.
Yes they are excellent engines. Never have tried restoring, just give them a good wash and send them on down the line. At the rate I'm going this year they're already sold before I even get them finished!
Nice Element!
Thank you! Still have it!
Well slap me sideways with a wet fish and call me sherry how’s it mate. Good video. Man when that spring shot off across the workshop I would of lost it big time lol lots of good information. Runs sweet too.
Thanks Mick, yes that spring was fun! These engines are a dying breed in the states as they stopped making them about 20 years ago. One of the best Briggs engines ever made!
@@EllisMowersandmore yeah I hear that.. and now we have cheap junk to work with.. briggs have just released an engine over here on a top brand mower and its 80% plastic.. stay safe mate
Nice job, explained well
Thank you and thanks for watching!
Turbocooled means plastic fan top
Gotcha and much easier to remove too!
Good job but the motor is missing the air shrouds over the cylinder heads. They should be on for proper cooling.
They were missing before I got the mower. Why they get taken off I don't know.
@@EllisMowersandmore it'll overheat and destroy the engine rather quickly. I had an opposed twin engine missing the same panels. I just made some out of sheet metal. Doesn't have to be perfect, just needs to enclose the fins and flywheel fan.
Great informative video.
Was the mower running before the fuel pump rebuild? Mine just quit running, not getting any gas. I bought a kit to rebuild mine hoping that will do it. Thanks for posting the video!
It got harder and harder to start until it wouldn't start at all. Make sure your fuel system is not clogged (fuel filter, collapsed fuel line etc.
@@EllisMowersandmore Thanks for your quick response. I replaced the fuel filter, but it wasn't clogged, and the line doesn't look collapsed. I replaced the fuel line from the tank to filter to the fuel pump a couple of years ago. Thanks again!
That's the smart approach: Replace original wear parts. You don't want to sell a 20+ year-old mower only to have it return in a week.
Yes you are right, pump was not holding prime and was hard to start. New fuel pump fixed all the issues with it.
Great video and very helpful.
I have a mower like this. Mine has the 4-Screw Fuel Pump. I have ordered a kit for it, however, I cant' remove the one that is on the carb. I have removed the 4 screws and it will not pull off. I'm afraid that I may break something. Can you give me any suggestions? Thanks in advance for your reply.
spray brake cleaner all over it and let it soak in. You may bend the metal plate a little, but no biggy, just straighten it back out in a vise.
Please please can you tell me where to locate the oil filter? I bought it from an a h and he lied about everything and I've had to replace everything. I can't find where the oil filter should be.
These engines do not have an oil filter so you're not missing anything!
I have a 20.5 B&S motor that I think needs a fuel pump. Ive tuned it up(changed oil, fuel filter, air filter, plugs, cleaned carb), but it still does not idle well and cuts off. where do you get your parts?
I have used the eBay fuel pumps and they worked well.
Pull the car out, get some lighting. All the finer points of the Springs are in the dark.
Will a gasket leak keep this from working/pressuring? I don't have a gasket under my carb inbetween the intake manifold and the carb. Will that cause the pump to not pressurise?
You are probably right.
Worked on any B&S Intek V-twins lately???............I have a 23hp that wants to race out of control, however the internal governor is not broken nor have I found any intake leaks that would richen up the fuel.....I am stumped.
Has to be something hanging the throttle if the governor is good.
@@EllisMowersandmore I even checked the butterflies. Their tight on the shaft......Been working on engines for over 40 years. That B***H is sucking air from somewhere that I can't find....:-(
The order that the gaskets and diaphrams go together is the question. I still don't know.
I have to look it up nearly each time I do it myself!
Just bought a 18 hp opposed twin and at idle sounds like a loose hammer inside , throttle up it's fine ?
Should I run it or try to fix it ?
Sometimes they make weird noises at idle, if it sounds fine at throttle I'd personally let it ride. Make sure all the tins and shrouds are bolted down.
I have the same engine. It has made the same noise since I bought it three years ago. It never seemed to hurt anything or get worse.
Does the fuel line connect to the bottom fitting on tne pump or the side fitting?
Bottom fitting
Would've been better if "the really tricky part" had been shown in close up detail. Back of your head not too helpful 😀
They don't sell very good replacement pieces all I've seen were separate pieces i was looking to buy one whole replacement part the new springs gaskets and the piece they fit in just the whole part
Can I replace my opposed twin carb w a 3 screw fuel pump with a carb with the 4 screw set up?
I have a b&s opposed twin carb with a 3 screw fuel pump on my riding mower that is trashed. I have a new carb with the 4 screw fuel pump. Are they interchangeable? Are they compatible?
You should be able to switch them out. The only thing I don't know is if you need the governor linkages for the 4 screw carb and if the throttle and choke cables will work with the 4 screw setup.
Room was too crowded with other equipment. would have appreciated some side viewa.
What was the part number on the lawn tractor?
Mower is gone so can't look at it but it was a Craftsman built in 1997 if that helps at all.
Why you guys say opposed my engine doesn't say that
I just pick up 2 of those twins for $115
That's a good deal Mando!
I’d move the vehicle. Just saying.