Adjusting The Electric Clutch - Toro 74266 Operator's Manual

Adjusting the Electric Clutch

Service Interval: Every 500 hours
The clutch is adjustable to ensure proper engagement and
proper braking.
1. Disengage the PTO, move the motion control levers to
the neutral locked position and set the parking brake.
2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. Unlatch the seat and tip it forward.
4. Loosen the front engine panel knobs and remove the
panel.
5. Pull up on the spring loaded idler pulley for the PTO
drive belt and remove the belt from the clutch pulley
(Figure 57).
1. Spring loaded idler pulley
2. Clutch
6. Unplug the electric connection for the clutch
(Figure 58).
7. Remove the two bolts holding the rubber clutch strap
to the mower frame (Figure 58).
8. Remove the center bolt holding the clutch to the engine
shaft and remove the clutch and key (Figure 58).
Figure 57
3. PTO drive belt
4. Gear box
1. Clutch
2. Two bolts and nuts for
clutch strap
3. Rubber clutch strap
9. Insert a 0.015–0.021 inch (0.381–0.533 mm) feeler
gauge through one inspection slot in the side of the
assembly. Make sure it is between the armature and the
rotor friction surfaces (Figure 59).
10. Tighten the lock nuts until there is slight binding on
the feeler gauge but it can be moved easily within the
air gap (Figure 59).
11. Repeat this for the remaining slots.
12. Check each slot again and make slight adjustments until
the feeler gauge between the rotor and armature with
very slight contact between them.
1. Slot
2. Adjusting nut
13. Install the clutch to the engine shaft with the key.
14. Apply blue Loctite® (or equivalent) to the center bolt.
15. While holding the crank shaft at the back of the
machine, install the center bolt and torque it to 50
ft-lbs (68 N-m) (Figure 58).
16. Install the rubber clutch strap to the mower frame with
the two previously removed bolts and nuts (Figure 58).
17. Pull up on the spring loaded idler for the PTO drive
belt and install it onto the clutch pulley (Figure 57).
43
Figure 58
4. Clutch center bolt
5. Electrical connection
Figure 59
3. Feeler gauge