Ariens 915037 Service Manual page 25

Adjust Electric Clutch (Figure 19)
1
3
6
1. Armature
2. Inspection Slot
3. Gap Adjustment Nut
NOTE: Ariens/Gravely recommends having the electric
clutch adjusted by a professional. Contact your Ariens/
Gravely dealer.
If the electric clutch fails to engage or disengage
properly, begins to make an abnormal noise, or if the
mower blade stopping time is too high, check the air
gap at the three inspection slots.
Inspect air gap:
1. Stop engine, set parking brake, remove ignition
key, and wait for all hot parts to cool.
2. Measure air gap between armature and rotor.
• Minimum: A 0.005 in. feeler gauge should slide
between armature and rotor with slight contact.
• Maximum: A 0.023 in. feeler gauge should slide
between armature and rotor with slight contact.
Adjust air gap:
NOTE: Adjust air gap as evenly as possible.
1. Loosen gap adjustment nut closest to inspection
slot.
2. Slide a 0.012 in. feeler gauge between armature
and rotor.
3. Tighten gap adjustment nut until there is a slight
contact on feeler gauge.
4. Repeat steps 1 through 3 for each inspection slot.
Be certain to adjust all three locations.
2
4
5
4. Air Gap
5. Electric Clutch
6. Rotor
Figure 19
Test Electric Clutch
1. Start unit, engage and disengage PTO two or three
times.
2. Stop engine, set parking brake, remove ignition
key, and wait for all hot parts to cool.
3. Recheck air gap between armature and rotor.
Adjust air gap if needed.
4. Retest mower blade stopping time:
3
• If mower blades stop in 5 seconds or less, the
electric clutch is functioning correctly.
• If mower blades DO NOT stop in 5 seconds or
less, the electric clutch MUST be replaced. Contact
your Ariens/Gravely dealer.
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