Governor Adjustment; Governor Range Adjustment - Westpro Westinghouse WH3250 Series Service Manual

MAINTENANCE
6. Insert a feeler gauge between the rocker arm and
the push rod and check for clearance (see Figure
7-21). See Table 7-2 for valve lash specifi cations.
1
Figure 7-21
1 - Push Rod
2 - Rocker Arm
3 - Feeler Gauge
Area
Table 7-2: Standard Valve Lash
Intake
0.005 ± 0.001 in.
(0.125 ± 0.025 mm)
7. If an adjustment is required, hold the adjusting nut
and loosen the jam nut.
8. Turn the adjusting nut to obtain the correct valve
lash. When the valve lash is correct, hold the
adjusting nut and tighten the jam nut to 106 in-lb
(12 N·m).
9. Recheck the valve lash after tightening the jam nut.
10. Perform this procedure for both the intake and
exhaust valves.
11. Install the rocker arm cover, gasket and spark plug.
7-10
3
2
4
5
4 - Jam Nut
5 - Adjusting Nut
Exhaust
0.007 ± 0.001 in.
(0.175 ± 0.025 mm)

GOVERNOR ADJUSTMENT

1. Start the engine and run the engine at full throttle
with no load.
2. Attach a frequency meter to the engine. The
frequency should be 62.5 ± 0.5 Hz.
3. Turn the limiting screw on the governor stop to
adjust the frequency.
4. If the frequency is out of range, see Governor
Range Adjustment on page 7-10.
5. If frequency still cannot be adjusted, see Engine
Diagnostics on page 8-5.

Governor Range Adjustment

1. Remove the control panel for access to the
governor linkage.
2. Loosen the nut on the governor arm pinch bolt.
Rotate the governor arm shaft counterclockwise
until the throttle shaft is at the full throttle position.
Hold it in this position.
1
8
6
5
Figure 7-22
1 - Nut
2 - Governor Arm
Shaft
3 - Governor Arm
Pinch Bolt
4 - Anti-Surge Spring
3. Tighten the nut on the governor arm pinch bolt
while holding in position.
4. Move the governor arm and throttle to make sure
they move smoothly and there is no binding.
5. Install the control panel.
2
3
7
4
5 - Throttle
6 - Limiting Screw
7 - Governor Arm
8 - Governor Spring