Husqvarna LB 553S e Manuel D'utilisation page 13

To do a general inspection
• Make sure that all nuts and screws on the product
are tightened correctly.
To clean the product externally
• Use a brush to remove leaves, grass and dirt.
• Make sure that the air intake on the top of the engine
is not blocked.
• Do not use a high pressure washer to clean the
product.
• If you use water to clean the product, do not flush
water directly on the engine.
To clean the inner surface of the cutting
cover
1. Put the product on its side with the muffler down.
CAUTION: If the product is put with the
air filter down, the engine can become
damaged.
2. Hose down the inner surface of the cutting cover
with water.
To examine the drive belt and clean the
gear housing
1. Remove the screws on the belt guard. (Fig. 13)
2. Pull the belt guard forward and remove it. (Fig. 28)
3. Examine the drive belt and belt pulley for damages.
4. Use a brush to remove leaves, grass and dirt from
the gear housing. (Fig. 29)
To replace and adjust the drive belt
1. Remove the blade. Refer to
page 13 .
2. Remove the belt guard. Refer to
drive belt and clean the gear housing on page 13 .
3. Remove the drive belt from the belt pulleys.
4. Install a new drive belt.
5. Attach the belt guard.
6. Attach the blade.
7. Operate the product to make sure that the drive belt
is correctly installed and adjusted.
To examine the cutting equipment
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.
895 - 004 - 30.10.2019
To replace the blade on
To examine the
1. Examine the cutting equipment for damage or
cracks. Always replace a damaged cutting
equipment.
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 replace the blade
1. Lock the blade with a block of wood. (Fig. 30)
2. Remove the blade bolt, the spring washer and the
blade. (Fig. 31)
3. Examine the blade support and blade bolt for
damages.
a) If you replace the blade or the blade support,
also replace the blade bolt, the spring washer
and the friction washer.
4. Examine the engine shaft to make sure that it is not
bent.
5. When you attach the new blade, make sure that the
bent ends point in the direction of the cutting cover.
(Fig. 32)
6. Put the friction washer and the blade against the
blade support. (Fig. 33)
7. Make sure that the blade aligns with the center of the
engine shaft. (Fig. 34)
8. Lock the blade with a block of wood. (Fig. 35)
9. Attach the spring washer and tighten the bolt with a
torque of 70 Nm. (Fig. 36)
10. Pull the blade around by hand and make sure that it
turns freely.
WARNING: Use protective gloves. The
blade is very sharp and cuts can easily
occur.
11. Start the product to do a test of the blade. If the
blade is not correctly attached, there is vibration in
the product or the cutting result is unsatisfactory.
To do a check of the oil level
CAUTION: A too low oil level can do
damage to the engine. Do a check of the oil
level before you start the product.
1. Put the product on level ground.
2. Remove the oil tank cap with the attached dipstick.
3. Clean the oil from the dipstick.
4. Put the dipstick fully into the oil tank to give a correct
picture of the oil level.
5. Remove the dipstick.
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