Poulan Pro PPG 6000, Service Manual

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2.8 Maintenance of the Cylinder Head and Valve
1. Remove the spark plug.
2. Remove the valve cover head bolt located in the center of the valve cover.
3. Check the gasket of the cover. Check the condition of the valve cover gasket.
4. Check the valve clearance of the engine. If they have to be adjusted loosen the valve
adjustment nut and then adjust the clearance.
a. Clearance for intake .15mm + .02mm, .006” + .001”
b. Clearance for exhaust valve .20mm + .02mm, .008” + .001”.
5. Tighten the nut with the following torque:
c. Adjustment nut 10 N*m, 88 in*lbf
d. Tightening nut 10 N*m. 88 in*lbf
6. Remove the rocker arm for inspection.
7. Remove the lifters and inspect. Rolling them on a flat surface will help to check if they are bent.