606 valves

greg olmstead · Dec 13, 2011

looking for info on how to adjust the valves on a 606 gas engine thanks for any help

El Toro · Dec 14, 2011

You need to remove the sparkplug near the radiator and bring No1 piston to TDC on the compression stroke. You need to hold your thumb over the plug hole while a helper hand cranks the engine slowly until you feel pressure against your thumb. Then drop a long plastic straw on top of the piston and you watch the straw rise while your helper slowly cranks the engine as you watch the straw rise. When it quits rising your No1 piston should be at TDC on the compression stroke.

Counting from the fan end of the engine you can now adjust valves 1,2,3,6,7 & 10. I don't have your tractor in my manual to get the valve clearance. That's why you need a manual. Once you find that I would add .003" when they're cold.

Once you have the valves above adjusted rotate the engine one full turn and adjust valves:
4,5,8,9,11,& 12 still counting from the fan end of the engine. Hal

606 valves

greg olmstead

New User

El Toro

Well-known Member

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