Operator's Manual

Maintenance Daily Weekly Monthly
Examine the engine, the fuel tank and the fuel lines for leaks. Examine the fuel
filter for contamination. Replace the fuel filter if it is necessary.
X
Clean the air filter. Replace the air filter if it is necessary. X
Tighten nuts and screws. X
Examine the air intake and make sure that it is not blocked. X
Examine the starter and the starter rope for damages. X
Examine the vibration damping units for damages, cracks and deformation.
Make sure that the vibration damping units are correctly installed.
X
Examine the spark plug. Refer to To do a check of 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
Clean the fuel tank. X
Examine all cables and connections. X
Examine and clean the spark arrestor screen on the muffler (for products without
catalytic converter).
X
Examine and clean the spark arrestor screen on the muffler (for products with
catalytic converter).
X
Examine the spark plug. Replace if it is necessary. X
To adjust the idle speed
1. Make sure that the air filter is clean and that the air
filter cover is attached.
2. Adjust the idle speed with the idle speed screw. To
see where the idle speed screw is on your product,
refer to
Product overview on page 6 .
To do a check of the spark plug
CAUTION: Use the recommended
spark plug. Refer to Technical data on page
16
. An incorrect spark plug can cause
damage to the product.
1. Stop the engine and let the product become cool.
2. Clean the spark plug if it is dirty.
3. Make sure that the electrode gap is correct. Refer to
Technical data on page 16 . (Fig. 39)
4. Replace the spark plug monthly or more frequently if
it is necessary.
To do maintenance on the muffler
CAUTION: If the spark arrestor screen
is frequently blocked, it can be a sign that
performance of the catalytic converter is
decreased. Speak to you servicing dealer to
examine the muffler. A blocked spark
arrestor screen causes overheating and
results in damage to the cylinder and piston.
CAUTION: The spark arrestor screen
must be replaced if it is damaged. Do not
use a product if the spark arrestor screen on
the muffler is missing or defective.
• Clean the spark arrestor screen on the muffler. Use
a wire brush. (Fig. 40)
• Let a servicing dealer replace or do service on the
muffler and the spark arrestor screen after 50 hours
of operation.
To examine and clean the cooling
system
The cooling system includes the cooling fins on the
cylinder and the air intake screen.
1. Stop the engine.
2. Make sure that the cooling system is not dirty or
blocked. If it is necessary, clean the air intake screen
and cooling fins.
CAUTION: A dirty or blocked
cooling system can increase the
temperature of the engine and cause
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