Wilsons Sandbox

John Laybolt wrote: [...]

> >From the list, i've gathered that all the specs on the > KLR tighten over time, the exhaust valves tightening > faster than the intakes.

[...]

> Am I correct?

I'd expect the clearances to close up over time. If the clearances were to open up, that would suggest that there is wear occuring between the cam and shim. I'd expect a valve hammering against the valve seat a few thousand times a minute to wear more than a lubricated cam/shim interface. Mister_T

Kevin Green wrote: [...]

> I bought an '00 with 450 miles. Now has about 800 miles and was > wondering whether I should check shims.

[...] Most 4-stroke motors with manually set valve clearances have a requirement to check the clearances this early in the motor's life, and the KLR is no different. Best to get it checked. Mister_T