Husqvarna 545RXT AutoTune Operator's Manual page 24

• If the spark plug is dirty, clean it and make sure that
the electrode gap is correct, see
page 27 .
• 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 28 .
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.
• Use a single-cut flat file.
24
Technical data on
WARNING: Always discard a blade that is
damaged. Do not try to make a bent or
twisted blade straight and use it again.
To sharpen the saw blade
WARNING: Stop the engine. Use protective
gloves.
• To sharpen the blade correctly, refer to the
instructions that come with the blade.
• Make sure that the product and blade has sufficient
support when you sharpen it.
• Use a 5.5 mm round file with a file holder.
• Hold the file at an angle of 15°.
• Sharpen one tooth of the saw blade to the right and
the next tooth to the left, see the illustration.
Note: Sharpen the edges of the teeth with a flat file if
the blade is heavily worn. Continue to sharpen with a
round file.
• Sharpen all edges equally to keep the blade
balanced.
15˚
171 - 001 - 20.10.2017