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Old 06-09-2011, 11:48 AM   #1
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Default Valve Adjustment

Thanks Dave:

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Originally Posted by smallblock450sl View Post
No problemo....take the 4 valve cover bolts off and remove the valve cover and remove the spark plug. useing a screwdriver into the spark plug hole, turn the engine over (by hand!) by turning the primary clutch till the piston is at "top dead center" or "TDC". Use a 4 thousanths feeler gauge between the top of the valve stem and the rocker arm addjustment bolt head. If there to tight, the valve can't close, if to loose..you could lose a push rod when reving it up. To adjust, if needed, loosen the 10 mm "jam nut" on the adjuster screw, then ever so slightly, turn the adjuster screw (clockwise to tighten) till there is a "slight drag" on the feeler gauge, then tighten the jam nut and check witthe feeler gauge for tightness. You will need to do this several times, because the "tightening of the jam nut will affect the adjustment. Then, it is VERY important that you turn the engine over (back to TDC) and recheck the settings. I myself usually turn the engine over and check about 5 times to make shure the adjustment is correct. Reinstall the spark plug and the valve cover and give it a run. Good luck

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Old 06-09-2011, 07:13 PM   #2
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Default Re: Valve Adjustment

If it helps someone I'm happy. Sprid, if you thought was worth a "sticky" so be it, but at least you could have "spell checked" it for me
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Old 06-13-2011, 08:12 AM   #3
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Default Re: Valve Adjustment

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Originally Posted by smallblock450sl View Post
If it helps someone I'm happy. Sprid, if you thought was worth a "sticky" so be it, but at least you could have "spell checked" it for me
There was some mis spelled words?

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Old 11-04-2011, 12:00 PM   #4
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Default Re: Valve Adjustment

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Thanks Dave:
I have found by pushing down on the screw driver befor you tighten the lock nut, the setting won't move. This has worked for me on many different solid lifter engines.
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Old 06-24-2012, 10:00 PM   #5
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Default Re: Valve Adjustment

I'm working on a 2003 G22 with a 357 engine. What is the valve clearance?
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Old 06-25-2012, 10:21 AM   #6
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Default Re: Valve Adjustment

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I'm working on a 2003 G22 with a 357 engine. What is the valve clearance?
0.08-0.12 mm both intake and exhaust when engine is cold.
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Old 06-25-2012, 08:17 PM   #7
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Default Re: Valve Adjustment

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Originally Posted by smallblock450sl View Post
0.08-0.12 mm both intake and exhaust when engine is cold.
Thank You Very Much, I appreciate the help. Not too familiar with Yamaha's
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Old 10-22-2012, 11:14 AM   #8
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Default Re: Valve Adjustment

is it better to check the valves with the motor in or out of the cart?

thanks,

Fin
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Old 10-24-2012, 07:58 PM   #9
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Default Re: Valve Adjustment

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is it better to check the valves with the motor in or out of the cart?

thanks,

Fin
No need to remove the engine for a valve adjustment.

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Old 11-21-2012, 09:02 AM   #10
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Default Re: Valve Adjustment

Thanks for this sticky. My cart needed valves adjusted and this being conveniantly located at the top of the thread showed me my clearances quick and got the valve free'd up and the cart runs great now! Best $250 spent ever.
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