Guys have any tips/instructions on adjusting the valves on a 400 EX? Thanks!

Roostking...

 

set to TDC of the compression stroke

pull tank and plastic, pull valve caps

insert feeler gauge

loosen locknut and adjust to spec with flat head screwdriver if they are out of spec

tighten locknut, re-check

put it back together and call it a day!

 

The only thing I wil add is to check the tolerance between the spring and rocker, not rocker and secondary rocker.

 

Valve Adjustment Instructions

Best help I can give you.

 

bump

 

Make sure you have not run the engine for 24 hours before the operation. VERY important.

 

dont stip the cap nuts on the head by trying to use an adjustable wrench....i think the size is 7/8, or whatever that is in metric sizes....oh, and it will probably still be noisy when you adjust the valves....i think its just a noisy engine