Husqvarna 125B Operator's Manual page 11

WARNING: Read and understand the safety
chapter before you clean, repair or do
maintenance on the product.
Maintenance schedule
Make sure that you obey the maintenance schedule.
The intervals are calculated from daily use of the
product. The intervals are different if you do not use the
product each day. Only do the maintenance work that is
found in this manual. Speak to an approved service
center about other maintenance work not found in this
manual.
Daily maintenance
• Clean the external surfaces.
• Examine the speed control and the throttle trigger
function. Replace damaged parts.
• Examine the stop switch. If it is necessary, replace it.
• Examine the idle speed.
• Clean the air filter. If it is necessary, replace it.
• Make sure that the inlet cover can be locked in
closed position. Make sure that the impeller is clean.
• Tighten all nuts and screws.
• Make sure that the housings are free of cracks.
• Make sure that the collection bag is not damaged
and that the zipper works. Replace the bag if
necessary.
Weekly maintenance
• Examine the condition of the starter device, the
starter rope and the tension spring. Replace all
damaged parts.
• Examine the condition of the air intake at the starter
device. Remove debris if the air intake is clogged.
• Clean the external side of the spark plug. Remove it
and examine the electrode gap. Adjust the distance
to 6 mm (0.024 in) or replace the spark plug.
• Clean the blades on the impeller.
• Clean the spark-arresting screen and replace it if
necessary (not on mufflers with a catalytic
converter).
• Clean the carburetor area.
• Clean the air filter.
Monthly maintenance
• Examine the starter rope handle and the starter
rope.
• Clean the fuel tank.
• Clean the carburetor and the area around it.
• Clean the blades on the impeller.
• Examine the fuel lines for cracks or other damage.
Change if necessary
• Change the fuel filter in the fuel tank.
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M M AINTENANCE
• Examine all cables and connections.
• Replace the spark plug.
• Change the air filter.
Yearly maintenance
• Examine the spark plug.
• Clean the external surface of the carburetor and its
adjacent areas.
• Clean the cooling system.
• Examine the spark arrester screen.
• Examine the fuel filter.
• Examine the fuel hose for damage.
• Examine all cables and connections.
50 hours maintenance
• Have an approved service center repair or replace
the muffler.
To adjust the idle speed
• Make sure that the air filter is clean and the air filter
cover is attached before you adjust the idle speed.
• Adjust the idle speed with the idle adjustment screw
T which is identified with "T" mark. (Fig 23. )
• The idle speed is correct when the engine operates
smoothly in all positions.
1. Turn the idle adjustment screw clockwise for higher
speed.
2. Turn the idle adjustment screw counterclockwise for
lower speed.
To do maintenance on the spark
arrester screen
Use a wire brush to clean the spark arrester screen.
To clean the cooling system
Clean the parts of the cooling system with a brush. (Fig
24. )
To examine the spark plug
• Examine the spark plug if the engine is low on
power, is not easy to start or does not operate
correctly at idle speed.
• To decrease the risk of unwanted material on the
spark plug electrodes, obey these instructions:
a) Make sure that the idle speed is correctly
b) Make sure that the fuel mixture is correct.
c) Make sure that the air filter is clean.
CAUTION: Always use the recommended
spark plug type. Incorrect spark plug type
can cause damage to the product.
adjusted.
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