Valve Clearance Inspection And Adjustment - Toro LC168F Service Manual

Valve Clearance Inspection and Adjustment

NOTE: Valve clearance inspection and adjustment must be done with the engine cold
1. Rotate engine to TDC (top-dead-center) of the compression stroke.
2. Remove the valve cover. Be sure both valves are completely closed and the decompression arm is not
holding the valve open.
3. Measure the clearance between the rotator and the valve stem with a feeler gauge.
NOTE: Be sure feeler gauge blade is not opening the valve while measuring valve clearance
Intake: 0.0059" (0.15 mm)
Exhaust: 0.0078" (0.20 mm)
4. To adjust valve clearance:
- Hold the rocker arm pivot and loosen the pivot lock nut.
- Turn the rocker arm pivot to obtain the specified clearance.
- Hold the rocker arm pivot and tighten the pivot lock nut to specification - 11 ft-lbs (15 Nm).
5. Recheck the clearance and readjust if necessary.
6. Inspect the valve cover gasket and replace if necessary. Install the cylinder head cover and torque
fasteners to specification -
Feeler Gauge
7.5 ft-lbs (10 Nm).
Rocker Arm
10
.
Pivot Lock Nut
Rocker Arm Pivot