3-15
HRX217HYA • HRX217HZA MAINTENANCE
17. THROTTLE CABLE AND LINKAGE
1. Move the throttle to the FAST position.
2. With engine off, loosen the locking clamp screw holding
the cable.
3. At the control plate, pull the cable backward slowly moving
lever A and B.
4. When lever A stops moving, hold the cable in that position.
DO NOT PULL FURTHER.
Lever B can still move if you continue pulling hard enough.
5. Tighten the locking clamp screw.
6. Start the engine and let it warm up,
7. Engage the Roto-Stop
®
, and then check the engine speed
with the throttle set to the FAST position.
8. If the engine speed is not within specification, bend the
governor spring arm very slightly as needed:
• Left increases spring tension and engine speed.
• Right decreases spring tension and engine speed.
18. DRIVE CLUTCH CABLE
1. With the engine stopped, position the cable ties as shown
on P. 2-26
.
2. Pull the shift lever all the way back to the neutral position.
3. Start the engine and move the throttle lever to the FAST
position.
4. Engage the drive clutch lever and confirm the
following:
a. Mower does not self-propel.
b. Mower begins to self-propel or creeps very slowly for-
ward when the shift lever is moved one notch forward.
If the mower does not operate as outlined above, go to
step 5. If the mower does operate as outlined above, no
adjustment is required.
5. Loosen the top and bottom drive clutch cable lock nuts.
Move the adjuster up or down, as required, until the
mower operates as outlined in step 4. Tighten the lock
nuts.
Maximum governed speed 3,100 +0/-150 rpm
CONTROL
LEVER A
CONTROL
LEVER B
BEND
BEND
GOVERNOR
SPRING
ARM
INCREASE
SPEED
DECREASE
SPEED
PULL
LOCKING
CLAMP
SCREW
THROTTLE
CABLE
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