Valve Clearance Inspection And Adjustment - Toro LC154FS 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 rocker
arm 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 adjustment bolt and loosen the lock nut.
- Turn adjustment bolt to obtain the specified clearance.
- Hold the adjustment bolt and tighten the 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 -
Valve Cover
Feeler Gauge
7.5 ft-lbs (10 Nm).
Lock Nut
Feeler Gauge
10
.
Valve Stem
Rocker Arm
Image For Reference Only