Valve Clearance Inspection And Adjustment; Engine Governor - Zero Point Setting - Toro Prior LC1P65FA 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.
0.0039" (0.10 mm)
Intake:
0.0059" (0.15 mm)
Exhaust:
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 valve cover and torque fasteners to
specification -
7.5 ft-lbs (10 Nm).
Engine Governor – Zero Point Setting
1. Loosen but do not remove the governor
arm pinch bolt and nut.
2. Move the governor arm to fully open
the throttle valve. Firmly hold
the governor arm in this position.
3. Rotate the governor arm shaft fully
clockwise and secure it in this position
with a pair of pliers.
4. Tighten the governor arm pinch bolt and nut to Specification - 7.5 ft-lbs (10 Nm).
5. Verify that the governor arm and throttle valve move freely. Verify engine RPM is within specification.
Governor Arm
Shaft
11
2
.
Governor Arm
Pinch Bolt Nut