Husqvarna 535LST Owner Manual - Page 16

To examine the spark plug, Air filter, To clean the air filter, Bevel gear, Technical data,

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To examine the spark plug CAUTION: Always use the recommended spark plug type. Incorrect spark plug type can cause damage to the product. • 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 adjusted. b) Make sure that the fuel mixture is correct. c) Make sure that the air filter is clean. • If the spark plug is dirty, clean it and make sure that the electrode gap is correct, refer to Technical data on page 19. 1. Move the choke lever up, to close the choke valve. 2. Remove the air filter cover and remove the air filter. • Replace the spark plug if it is necessary. Air filter Remove dust and dirt from the air filter to keep it clean in order to prevent: • Carburettor malfunctions. • Starting problems. • Loss of engine power. • Unnecessary wear to engine parts. • Too much fuel consumption. Clean the air filter at an interval of 25 hours, or more regularly if conditions are unusually dusty. To clean the air filter CAUTION: A air filter that is damaged, very dirty or soaked with fuel must always be replaced. If you use an air filter for a long time it cannot be fully cleaned. Replace the air filter with a new one at regular intervals. 3. Clean the air filter with warm soap water. Make sure that the air filter is dry before you install it. 4. Replace the air filter if it is too dirty to fully clean it. Always replace a damaged air filter. 5. Also clean the inner surface of the filter cover. Use air or a brush. 6. Do a check of the rubber sealing surface. Replace the filter on the rubber seal if it is damaged. 7. Make sure that the filter is dry before you assemble it. Bevel gear The bevel gear is filled with the right quantity of grease at the factory. But, before you use the product, make sure that the bevel gear is 3/4 full with grease. Use Husqvarna special grease. The grease in the bevel gear does not need to be changed unless repairs are carried out. 16 1011 - 005 -

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To examine the spark plug
CAUTION:
Always use the recommended
spark plug type. Incorrect spark plug type
can cause damage to the product.
•
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
adjusted.
b)
Make sure that the fuel mixture is correct.
c)
Make sure that the air filter is clean.
•
If the spark plug is dirty, clean it and make sure that
the electrode gap is correct, refer to
Technical data
on page 19
.
•
Replace the spark plug if it is necessary.
Air filter
Remove dust and dirt from the air filter to keep it clean in
order to prevent:
•
Carburettor malfunctions.
•
Starting problems.
•
Loss of engine power.
•
Unnecessary wear to engine parts.
•
Too much fuel consumption.
Clean the air filter at an interval of 25 hours, or more
regularly if conditions are unusually dusty.
To clean the air filter
CAUTION:
A air filter that is damaged, very
dirty or soaked with fuel must always be
replaced.
If you use an air filter for a long time it cannot be fully
cleaned. Replace the air filter with a new one at regular
intervals.
1.
Move the choke lever up, to close the choke valve.
2.
Remove the air filter cover and remove the air filter.
3.
Clean the air filter with warm soap water. Make sure
that the air filter is dry before you install it.
4.
Replace the air filter if it is too dirty to fully clean it.
Always replace a damaged air filter.
5.
Also clean the inner surface of the filter cover. Use
air or a brush.
6.
Do a check of the rubber sealing surface. Replace
the filter on the rubber seal if it is damaged.
7.
Make sure that the filter is dry before you assemble
it.
Bevel gear
The bevel gear is filled with the right quantity of grease
at the factory. But, before you use the product, make
sure that the bevel gear is 3/4 full with grease. Use
Husqvarna special grease.
The grease in the bevel gear does not need to be
changed unless repairs are carried out.
16
1011 - 005 -