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Husqvarna 525HF3S Manual

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Maintenance
Introduction
WARNING: Read and understand the safety
chapter before you do maintenance on the
product.
Maintenance schedule
Maintenance Before
operation
After 40
h
After 100
h
Clean the external surface. After each operation.
Clean the muffler, exhaust pipe and engine from leaves, dirt and unwanted lubri-
cant.
After each operation.
Make sure that the cutting unit does not move at idle speed. X
Do a check of the stop switch. Refer to
To do a check of the stop switch on page
6
.
X
Examine the cutting unit for damages and cracks. Replace if it is damaged. X
Examine the hand guard for damages and cracks. Replace if it is damaged. X
Do a check of the throttle trigger lockout and the throttle trigger. Refer to
To do a
check of the throttle trigger lockout on page 5
.
X
Examine the engine, the fuel tank and the fuel hose for leaks. X
Tighten nuts and screws. X
Examine the starter and the starter rope for damages. X
Do a check that the screws that hold the blades together are correctly tightened. X
Clean the air filter. Clean more frequently if used in areas which has dust. Re-
place if it is damaged.
X
Examine the vibration damping units for damages and cracks. Replace if it is
damaged.
X
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
To examine the spark plug on page 13
.
X
Clean the cooling system. X
Clean the external surface of the carburetor and the area around it. X
Examine the fuel filter for contamination and the fuel hose for cracks and other
defects. Replace if it is damaged.
X
Clean the spark arrester screen on the muffler, replace if it is damaged. X
Clean the inner surface of the fuel tank. X
Replace the spark plug. X
Examine the clutch, clutch spring and the clutch drum for wear. Replace if it is
damaged by an approved servicing dealer.
X
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