Adjusting The Electric Clutch; Cooling System Maintenance; Cleaning The Air Intake Screen; Cleaning The Cooling System - Toro GrandStand 74534 Operator's Manual

Adjusting the Electric Clutch

Service Interval: Every 500 hours—Check the electric
clutch.
The clutch is adjustable to ensure proper engagement and
proper braking.
1. Insert a 0.381–0.533 mm (0.015–0.021 inch) feeler
gauge through one inspection slot in the side of the
assembly. Make sure it is between the armature and
the rotor friction surfaces.
The gap needs to be at least 0.381 mm (.015 inches)
and not more than 0.533 mm (.021 inches).
2. If adjustment is needed, then set at 0.381 mm (.015
inches) for each of the three adjustment slot positions.
Tighten the lock nuts until there is slight binding on
the feeler gauge but it can be moved easily within the
air gap (Figure 58).
3. Repeat this for the remaining slots.
4. Check each slot again and make slight adjustments until
the feeler gauge between the rotor and armature with
very slight contact between them.
Figure 58
1. Adjusting nut
2. Slot
3. Feeler gauge
Cooling System
Maintenance

Cleaning the Air Intake Screen

Service Interval: Before each use or daily
Before each use remove any build-up of grass, dirt or other
debris from the cylinder and cylinder head cooling fins, air
intake screen on flywheel end, and carburetor-governor
levers and linkage. This will help insure adequate cooling
and correct engine speed and will reduce the possibility of
overheating and mechanical damage to the engine.

Cleaning the Cooling System

Service Interval: Every 100 hours—Check and clean engine
cooling fins and shrouds.
1. Disengage the PTO 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. Remove the air intake screen and fan housing
(Figure 59).
4. Clean the debris and grass from the engine parts.
5. Install air intake screen, recoil starter and fan housing
(Figure 59).
1. Guard
2. Engine air intake screen
3. Bolt
40
1
2
3
4
5
g017626
Figure 59
4. Fan housing
5. Screw