Valve Adjustment how to adjust valves

what year ? 1999 should be 15 to 20 mm intake on exh 18 to 23 mm i think depending on year. they run tight. adj at tdc on comp stroke with valves open far as they can. have to rotate eng for each valve to open fully and independently one opens and other closes at same time. should be very quiet if adj correctly.adj the closed valve only when fully closed

Hello, What lifter are you talking about?... your engine does not have "conventional" lifters.. the valves are adjusted at the rocker arms/valves stem. If the engine is "ticking loud" . or not returning to proper idle quickly.. its time for a valve adjustment,,,> By a QUALIFIED professional!!!!!!

Fuel supply problem somewhere. How is the float adjustment and the float valve? I'd guess the level adjustment is too low.

maybe not enough compression or timing is off airfilter clogged or needs valve adjustment

Sounds like you need a valve adjustment, if it is popping thru the carb, the intake valve is open at the wrong time, this can be caused by three things, too much gas, timing is wrong (stretched chain) or valves too tight not allowing valve to close. I would adjust valves first.

Here's the info you're looking for.

1992-1998 Yamaha Timberwolf 2WD and 4WD
Intake: 0.05 - 0.09 mm (0.002 ~ 0.004 in)
Exhaust: 0.11 - 0.15 mm (0.004 ~ 0.006 in)

Hey Anon, this is NOT something to "try and learn" how to do..find a professional that is will to tutor you when you do this for the first time!

It COULD save you A LOT of $$$$!!!!!

.004 intake
.005 ext

Set motor to TDC compression stroke. Watch intake valve open and close.. when it closes continue to turn to timing mark.

bluetraxx.com might have a service manual posted with that info. yamaha also has owners manuals free for download but not sure if they'd cover that.