Just a rant..frigging crap 1 lb over torque and they snap or strip..I know ..I know use a torque wrench.I have one but the damn things a frigging monster,it wont fit anywhere..I have owned 10 Yamaha's over the last 20 years,always the same thing with their crap bolts..

 

I here you. I tried taking my carb float bowl off and all 4 screws stripped withing seconds. I used some pliers and then went down to Ace Hardware and replaced them with some allen head bolts.

 

Sad thing is...they're so weak they don't even snap! Just twist and they're gone!
Buck

 

oh i have to throw my 2 cents in. past few times i took the bowels of my carbs on my raptor, i always strip a head on 1 of the 8 bolts. there lug nuts are just as bad too. i think yamaha uses old recycled coat hangers on there nuts and bolts.

 

Well, I don't know. I never had any issues with any of the bolts...=\...

 

Pretty sure all quads/dirtbikes who share the carburetors would have the same issues, this is nothing new and hardly a "Yamaha" problem...my 2 cents

 

Half the bolts on my Wolverine came from John Deere. Deere uses very high quality zinc plated, grade 10.9, flange head bolts on all their engines. Somehow these bolts keep following me home from work. One of the perks of being a heavy equipment mechanic...

 

Hey I'm a JD tech too!! Yeah those are some awesome bolts.
If you have a problem with the carb bolts stripping out it's mikuni's falt not yamaha's.

 

There is something most people forget when it comes to phillips screws, they do have sizes. Just because the screw driver feels tight doesn't mean its the correct size. Just like if you use a 12 point 13mm on a 1/2 inch bolt. I have a case with about 40 sizes of phillips screw driver heads. The correct size used in a socket wrench always does a perfect job. You ever try to take the clutch cover off a 30 year old bike with a hand screw driver? It doesn't work. Anyone who has worked on ATV/Bike motors for more than a few years should have a large set of phillip head sockets.

 

Yes, Phillips heads sizes are notated by numbers correct? #1#2#3 ect....