Toro LC175FDS, Руководство по обслуживанию

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12
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 rocker arm and the valve stem with a feeler gauge.
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 -
7.5 ft-lbs (10 Nm).
Feeler Gauge
Rocker Arm
Pivot Lock Nut
Rocker Arm Pivot