valve adjustment

[Brian450]

How often do the valves need to be adjusted on the TRX450R?

check them after break in but not alot of people have had to adjust them. I would guess about once a year if you ride a bit

[REDARMYRACER]

they will not need to be adjusted as much as the 400ex screw lock type valves. the new shim under buckets last longer but are more difficult to adjust when needed.... it's sorta a trade off. You will need to check the clearance when or if you install a cam.. Get a honda service manual if you're not familiar. It's not that difficult but will require some mathmatics to acccount for shim size...

[FatBoy Racing]

I've had mine about 6 months and each time I've checked, they were within tolerance, but when the time comes, it's gonna be a dealer visit unless I want to buy up X number of shims to cover my bases -- yeah right