2000 Yamaha WR400f

I'm going to check my valve clearance tomorrow. The dealer said they'd do it for $115. They said that even if the valves don't need adjusting they replace the shims. I'm hoping my vavle clearance is good, because I don't want to pull the valves apart. Do you guys change shims even when the clearance is fine?

 

wow this 4 stroke **** is wierd ive never herd of shims.

 

Yea, on mx 4 strokes (besides KTM) you have to use shims and cant adjsut them like old 4 strokes. 4 stroke MX bikes are high maintinance and cost alot more to maintain. You got lucky because the yzf/wr400 is a very reliable machine.

 

I wanted a 4-stroke trail bike, I'm just trying to learn about the maintance on it.

 

Well, your bike is spawn of the yfz400 with retarted timming, heavier flywheel, and different porting.

 

yeah that's what i've read plus, wider ratio 5-speed, 1 gallon bigger tank, headlight, and kickstand.

 

Well my intake valve clearances are at the top of the tolerance, but the exhaust valve clearances are about .004 to big. I didn't want to pull everything apart to change the shims (never done it) and dealer wants $115 to do it, so will I be okay?

 

No, your gonna have to do it.

 

okay sorry i totally effed up my previous post. my exhaust valve clearances are in tolerance and my intake clearances are .002 over (not .004)

so can i rock it like this for the summer at least?