Ariens 915501 Service Manual download pdf (Page 25)

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Adjust Electric Clutch (Figure 19)

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.

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:

• 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.

Figure 19

OE0070

1. Armature

2. Inspection Slot

3. Gap Adjustment Nut

4. Air Gap

5. Electric Clutch

6. Rotor

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Ariens 915501 Service Manual Page 25

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