McCulloch SUPERLITE 4528 Operator's Manual page 10

Maintenance schedule
Maintenance
Clean the external surface.
Clean the muffler, exhaust pipe and engine from leaves, dirt and unwanted lubri-
cant.
Make sure that the cutting unit does not move at idle speed.
Do a check of the stop switch. Refer to
6 .
Examine the cutting unit for damages and cracks. Replace if it is damaged.
Examine the hand guard for damages and cracks. Replace if it is damaged.
Do a check of the throttle trigger lockout and the throttle trigger. Refer to
check of the throttle trigger lockout on page 6 .
Examine the engine, the fuel tank and the fuel hose for leaks.
Tighten nuts and screws.
Examine the starter and the starter rope for damages.
Do a check that the screws that hold the blades together are correctly tightened.
Clean the air filter. Clean more frequently if used in areas which has dust. Re-
place if it is damaged.
Examine the vibration damping units for damages and cracks. Replace if it is
damaged.
Clean the external surface of the spark plug and the area around it. Remove the
spark plug and measure the electrode gap. Adjust the electrode gap or replace
the spark plug. Refer to
Clean the cooling system.
Clean the external surface of the carburetor and the area around it.
Examine the fuel filter for contamination and the fuel hose for cracks and other
defects. Replace if it is damaged.
Clean the spark arrester screen on the muffler, replace if it is damaged.
Clean the inner surface of the fuel tank.
Replace the spark plug.
Examine the clutch, clutch spring and the clutch drum for wear. Replace if it is
damaged by an approved servicing dealer.
Make sure that the gear housing is filled with grease.
Do a check of all cables and connections.
To adjust the idle speed
1. Clean the air filter and attach the air filter cover.
2. Start the product. Refer to
cold engine on page 9 .
10
To do a check of the stop switch on page
To examine the spark plug on page 11 .
To start the product with a
operation
To do a
3. Turn the idle adjustment screw T clockwise until the
cutting unit starts to move. (Fig. 29)
4. Turn the idle adjustment screw counterclockwise
until the cutting unit stops.
Before After 40 After 100
h
After each operation.
After each operation.
X
X
X
X
X
X
X
X
X
X
X
X
X
X
1255 - 002 - 08.09.2020
h
X
X
X
X
X
X
X