Valves adjustment.

[DirtGobix]

Hey guys, i have a yz450 its an 06 and at the last argyll round it was extremely difficult to start. The power is still hard to tell if its losing some but i think it might be. I called Al Posey and e told me to check the valves first and then go from there. My bike has like i think 80 hrs on it so it is time for a new top end im thinking. Well i was wondering if anyone knows the valve specs for my bike or where could i get them besides the owner manual??
Well thank guys for any help in advance!

[countrykid631]

cladio what do u not f....in listen to me.
google it u idiot!

edit: this is for a 250f but it explains how to do it.
note the valve clearance is diff.
it even has pictures so u cant even **** it up.
http://forums.dirtrider.com/70/65953...50f/page4.html

[Shgnwgn008]

80hrs isnt, bad, I change my oil every 3 rides and got 102 hrs on my topend before I changed it and the old piston still looked good, coulda got more, its probably just the valves

[sean 252]

80 hours?? Claudio I think you stretched your maintenance limit to the Max....I have the valves checked every 20 hours period....New Top end 30 hours on a 250 (unless racing) and 50 hours on the 450....My humble suggestion is let a pro adjust your valves and do your top end.....Heck JN , MX Shock, Posey, Jody,Ron from T&R are all in your area.... Just my two cents worth....If Alan is still in town he also is a choice.....

[Shgnwgn008]

Originally Posted by sean 252

80 hours?? Claudio I think you stretched your maintenance limit to the Max....I have the valves checked every 20 hours period....New Top end 30 hours on a 250 (unless racing) and 50 hours on the 450....My humble suggestion is let a pro adjust your valves and do your top end.....Heck JN , MX Shock, Posey, Jody,Ron from T&R are all in your area.... Just my two cents worth....If Alan is still in town he also is a choice.....

50 hrs on a top end for a 450, must be a honda cuz my yami still pulled at 102

i ordered your parts yesterday too

[sean 252]

Originally Posted by Shgnwgn008

50 hrs on a top end for a 450, must be a honda cuz my yami still pulled at 102

i ordered your parts yesterday too

On a 450 you cant feel the HP loss as easily, but your bike now starts easier and gets on it a lot better huh? 102 hours is a long time, frequent oil and air filter changes certainly help.... Thanks for ordering all this stuff, I will be back Saturday, See ya race Saturday night?

[Shgnwgn008]

Originally Posted by sean 252

On a 450 you cant feel the HP loss as easily, but your bike now starts easier and gets on it a lot better huh? 102 hours is a long time, frequent oil and air filter changes certainly help.... Thanks for ordering all this stuff, I will be back Saturday, See ya race Saturday night?

yea ill be there, it snaps a little more but it starts first kick just as good as it did with 102 hrs