Husqvarna L 321AH Operator's Manual page 19

2. Remove the ignition cable from the spark plug.
3. Remove the oil tank cap.
4. Put a container below the product to collect the
engine oil in.
5. Tilt the product to drain the engine oil from the oil
tank.
6. Fill with new engine oil of the type recommended in
Technical data on page 19 .
7. Do a check of the oil level. Refer to
the oil level on page 6 .
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
on page 19 .
• Replace the spark plug if it is necessary.
To clean the air filter
1. Remove the air filter cover and remove the filter.
2. Hit the filter against a flat surface to make the
particles fall off.
CAUTION: Do not use solvent or
compressed air to clean the air filter.
3. Put the air filter back. Make sure that the air filter
fully seals against the air filter holder.
4. Put the air filter cover back.
Note: An air filter that is used for a long time cannot be
fully cleaned. Replace the air filter at regular intervals.
Always replace a damaged air filter.
1240 - 001 - 08.07.2019
To examine the cutting equipment
To do a check of
1. Examine the cutting equipment for damage or
2. Look at the blade to see if it is damaged or blunt.
Note: It is necessary to balance the blade after it is
sharpened. Let a service center sharpen, replace and
balance the blade. If you hit an obstacle that causes the
product to stop, replace the damaged blade. Let the
service center estimate if the blade can be sharpened or
must be replaced.
To assemble the blade
1. Put the blade adapter on the engine crankshaft.
Technical data
2. Always attach the blade with the angled ends
3. Use a block of wood between the blade and product
4. Always tighten the bolt with a torque of 35-40 ft lbs
WARNING: To prevent accidental start
remove the ignition cable from the spark
plug.
WARNING: Use protective gloves when you
do maintenance on the cutting equipment.
The blade is very sharp and cuts can easily
occur.
cracks. Always replace a damaged cutting
equipment.
Make sure the key in the adapter and crankshaft
keyway are aligned.
pointing up in the direction of the engine.
housing. Tighten the blade bolt and turn it clockwise.
(47-54 Nm).
13