my bad boy is HARD to start, unless it cold outside and the choke is on. it starts real nice, then its real hard. its making a little noise. i think this is it
Hey, awesome video! I'm planning to do my valve shims and timing chain but I'm confused where do we match the dots on the cam shaft too? and how do I know if I set the chain properly?
The marks on the cam shafts will line up with the top of the cylinder head (shown at 4:00 in this video). When putting the chain back on, you need to have the timing mark on the flywheel cover aligned as well as both cams (shown at 12:44 in this video).
@@rmatvmcok so I get how the first dot matches with the top of the cylinder. But, still kind of confused what I align the second dot up with? Is it the any of the cam teeth?
@@Hayven1992 didn't come with one. Only a service book that has nothing. It says see a dealer for valves right in the book. I figured it out and did though. Easy to do.
🤔 wondering if this is why my 450 starts but then hits a tight spot but it still runs normally until it gets to that out of spec valve. My crank seem ok though thanks for video I’ll check this first
@@krotchlickmeugh627 all done I rebuilt it myself it was definitely a bad crank bearing it still runs great I’m going to check the valves soon. The rebuild was several months ago. New videos will be up on my channel in the coming weeks
You put the equation out wrong making it look complicated to the idiots in the comment section. You should have wrote out the literal equation A=(b-c)+D Then explained what each variable stood for. Now all your comments are saying dumb shit and no one learned anything. Good job tho
What did you use to hold the new valve cover gasket in place on the valve cover? Everytime I go to put it on the bike the gasket falls off the valve cover. Its a new gasket and new valve cover.
Valves are a good thing to check regularly but it doesn't sound like this is your issue. You could check your spark plug to make sure you're not running too lean which would cause the quad to run hot but it's normal for YFZs to have a red hot exhaust, especially when just idling.
Lets say there was such a thing as a race or non race version. Just to humor you. There isnt lol so jokes on you. On the ttr250 rather than the yz250f-r the valves are not cam over bucket. They are screw and lock nut. Because they dont rev as high as this bike. Totally different engine.
Hello I took a few weeks ago to adjust my valves but uncover to change rings my question is if I change the valve seals do I have to re-adjust or are they still adjusted I just want to change seals to be a little calmer the valves are in good condition
As long as the valves are wearing evenly and you keep every part in it's same location, then it shouldn't need to be readjusted after changing stem seals. I would check them with the cylinder head still off the engine to be sure. That way you know if something is wrong or if you did need to make adjustments. - Wes
The best thing I have ever done was trade my POS yfz450 for a cub banshee I was under the fuel tank more than I was on the seat of that hunk of $hit I even had new valve's installed and I was still always adjusting the intake valves that back firing hard starting POS I figured out my Yamaha designed a quick release fuel tank for it after I ran the first 2 tanks of fuel threw it
@@randysmith8604 it was an 04 or 05 I can't remember 100% for sure it had the oil mod done to the case after it blew the first time then I built a 480 out it then the head gasket blew out twice had to stud the engine after that after about a tank of fuel it was hard starting and backfiring threw the exhaust adjusted the valve's a few times after that then I found out the valve's were shit they started cupping or coning however you want to call it installed all new valve's then the cdi box took a crap that was the biggest POS I have ever owned
Great video... very educational thanks for posting it...
Thanks Iv been looking for this for a long time now
Great video
my bad boy is HARD to start, unless it cold outside and the choke is on. it starts real nice, then its real hard. its making a little noise. i think this is it
Great tutorial. Thankyou!
Good video but what make the video kinda 👎 is not starting the atv after
Hey, awesome video! I'm planning to do my valve shims and timing chain but I'm confused where do we match the dots on the cam shaft too? and how do I know if I set the chain properly?
The marks on the cam shafts will line up with the top of the cylinder head (shown at 4:00 in this video). When putting the chain back on, you need to have the timing mark on the flywheel cover aligned as well as both cams (shown at 12:44 in this video).
@@rmatvmcok so I get how the first dot matches with the top of the cylinder. But, still kind of confused what I align the second dot up with? Is it the any of the cam teeth?
FIRE THAT THING UP, PROVE IT THAT IT STARTS
It is in a shop that sells merch and parts. They also repair. Most likely theres more wrong with it and they are using it as a display for videos.
What are the valve clearances on a 2020 yfz450r please I can't find anything on this only older quads.
You manual is your bible my friend
@@Hayven1992 didn't come with one. Only a service book that has nothing. It says see a dealer for valves right in the book. I figured it out and did though. Easy to do.
@@randysmith8604 service manual and owners manual are two different books bruh
Givi you video
I want you to teach me how to set up the cf moto cam 650 etc
So is it 7.2 inch pound or foot pound???
🤔 wondering if this is why my 450 starts but then hits a tight spot but it still runs normally until it gets to that out of spec valve. My crank seem ok though thanks for video I’ll check this first
Get it professionally done I recommend!
"Tight spot" you need to explain that.
Nope nvm its been a year RIP im sure you already found out what you meant by "tight spot" lol good luck my dude
@@krotchlickmeugh627 all done I rebuilt it myself it was definitely a bad crank bearing it still runs great I’m going to check the valves soon. The rebuild was several months ago. New videos will be up on my channel in the coming weeks
the math looks like the hardest part
The math is easy they just made it look complicated.
You put the equation out wrong making it look complicated to the idiots in the comment section.
You should have wrote out the literal equation A=(b-c)+D
Then explained what each variable stood for.
Now all your comments are saying dumb shit and no one learned anything. Good job tho
What did you use to hold the new valve cover gasket in place on the valve cover? Everytime I go to put it on the bike the gasket falls off the valve cover. Its a new gasket and new valve cover.
sometimes they do that, you can use a little nit of gasket maker if you need it
i have a 2014 yfz450r and my exhaust gets red hot.. my question is , could what you are doing in this video be the solution to my problem ?
Valves are a good thing to check regularly but it doesn't sound like this is your issue. You could check your spark plug to make sure you're not running too lean which would cause the quad to run hot but it's normal for YFZs to have a red hot exhaust, especially when just idling.
@@rmatvmc Thanks Guys ! Thats exactly what i did yesterday ! Awesome !!
I'm good I'll stay with my 2 stroke. $500 @ the stealership for this service bike was only $3000👎🏾
I got the whole cylinder head kit do I need to make any adjustments to the shims valves etc or just bolt on n play?!
Gotta make adjustments
Sir yamaha yfz 450 r cut of huw to chek
Please contact me and tell me sir please
English! Do you speak it!?
So the yfz450r and yfz450 have the same clearence? Because that's and R model you're working on...
They are all r models genius
Lets say there was such a thing as a race or non race version. Just to humor you. There isnt lol so jokes on you. On the ttr250 rather than the yz250f-r the valves are not cam over bucket. They are screw and lock nut. Because they dont rev as high as this bike. Totally different engine.
@@krotchlickmeugh627 carb model is YFZ450 and 09+ is EFi and YFZ450r.
Hello I took a few weeks ago to adjust my valves but uncover to change rings my question is if I change the valve seals do I have to re-adjust or are they still adjusted
I just want to change seals to be a little calmer the valves are in good condition
As long as the valves are wearing evenly and you keep every part in it's same location, then it shouldn't need to be readjusted after changing stem seals. I would check them with the cylinder head still off the engine to be sure. That way you know if something is wrong or if you did need to make adjustments. - Wes
X
Excelente Muy bien 👌 🎉@@rmatvmc
@@rmatvmcmuy buen material didáctico 👍😍😃
I have a 2020 yfz450r the valves are loud is that normal. My local dealer wants 390 bucks plus parts. So more like 500 bucks to service it.
rumble is fine ticking or knocking is no good to quiet means they are to tight.
Your timing chain is gone. So if you cant do it. Sell it.
@@krotchlickmeugh627 I had the 20 hr service done everything is I specs. It’s normal noise. Thanks.
@@randysmith8604 yeah well your other comment eluded to it not being fine. A little bit of valve noise is perfectly fine
@@krotchlickmeugh627 none of my friends owned a Yamaha so they all were like that’s so loud . I didn’t know any better.
The best thing I have ever done was trade my POS yfz450 for a cub banshee I was under the fuel tank more than I was on the seat of that hunk of $hit I even had new valve's installed and I was still always adjusting the intake valves that back firing hard starting POS I figured out my Yamaha designed a quick release fuel tank for it after I ran the first 2 tanks of fuel threw it
What year was your quad? Also did it matter how you ride?
@@randysmith8604 it was an 04 or 05 I can't remember 100% for sure it had the oil mod done to the case after it blew the first time then I built a 480 out it then the head gasket blew out twice had to stud the engine after that after about a tank of fuel it was hard starting and backfiring threw the exhaust adjusted the valve's a few times after that then I found out the valve's were shit they started cupping or coning however you want to call it installed all new valve's then the cdi box took a crap that was the biggest POS I have ever owned
Long live the 2 strokes .
@@randysmith8604 05 with oil mod after it blew up with 4 tanks of fuel ran threw it
you prolly had a pos k&n filter n destroyed the valves