Husqvarna 553RBX Manuel D'utilisation page 23

• 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 25 .
• Replace the spark plug if it is necessary.
To adjust the engine
Follow these instructions if the engine does not operate
correctly.
1. Attach an approved cutting attachment, see
Accessories on page 26 .
2. Start the engine.
3. Operate the product in usual conditions for 3
minutes.
4. Lift the cutting attachment in the air and apply full
throttle for 30 seconds. If a trimmer head is used,
make sure that the trimmer line is cut to correct
length by the guard knife.
Note: Do not cut grass or branches during this step.
5. Operate the product in usual conditions to make sure
that the engine operates correctly.
6. If the engine does not operate correctly, do step 4
and 5 again 3 times.
7. Let your Husqvarna dealer adjust/repair the product
if the engine does not operate correctly after you
have done all these steps.
To sharpen the grass knife and grass
blade
WARNING: Stop the engine. Use protective
gloves.
• To sharpen the grass knife or grass blade correctly,
refer to the instructions that come with the cutting
attachment.
• Sharpen all edges equally to keep the balance.
1104 - 005 - 18.10.2019
•
Technical data
To lubricate the flexible drive shaft
1. Pull up the knob and remove the drive shaft sleeve
2. Lubricate the drive shaft.
Use a single-cut flat file.
WARNING: Always discard a blade that is
damaged. Do not try to make a bent or
twisted blade straight and use it again.
from the clutch cover.
a) Shake or pull the drive shaft out of the drive shaft
sleeve.
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