3-17
HRX217HYA • HRX217HZA MAINTENANCE
20. GOVERNOR
ADJUSTMENT
1. Move the throttle lever to the FAST position.
2. Loosen the governor arm nut on the governor arm.
3. Push the governor arm away from the carburetor, and open the carburetor throttle valve fully.
4. Holding the carburetor throttle arm fully open, turn the governor arm shaft clockwise fully, and tighten the governor
arm nut to the specified torque.
TORQUE: 3 N•m (2.2 ft-lb)
5. Check to see whether the governor arm and the carburetor throttle valve arm operate smoothly.
6. Start the engine and warm it up to the normal operating temperature.
7. Engage the Roto-Stop
®
lever and check the maximum engine speed.
8. If adjustment is necessary, bend the governor spring tab
on the fuel valve plate very slightly.
• Moving the tab to the left decreases governor spring tension and engine speed.
Moving the tab to the right increases governor spring tension and engine speed.
DANGER
The mower blades will rotate during this procedure.
Rotating blades will amputate fingers, hands, and other extremities
if contacted.
Do not allow your hands or feet to come into contact with the
rotating blades while performing this procedure.
Maximum speed (no load with blades engaged)
3,100 +0/-150 rpm
GOVERNOR ARM
GOVERNOR ARM NUT
GOVERNOR SPRING
INSTALLATION
POSITION
GOVERNOR
ARM SHAFT
3 N•m (2.2 ft-lb)
GOVERNOR
SPRING TAB
DECREASE
ENGINE
SPEED
INCREASE
ENGINE
SPEED
Clearance:
0.5 mm (0.02 in) or more
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