Husqvarna 535RX Operator's Manual page 25

To adjust the high speed needle (H)
The engine is adjusted at the factory to operate at sea
level. At higher altitudes, in different weather or different
temperatures it can be necessary to adjust the high
speed needle.
• Turn the high speed needle to make adjustments.
CAUTION: Do not turn the high speed
needle screw across the adjustment
limitation stop. This can cause damage
to the piston and the cylinder.
To adjust the start throttle speed
1. Apply idle speed.
2. Push the start throttle lock. Refer to
throttle handle with a start throttle lock on page 17 .
3. If the start throttle speed is less than 4000 rpm, turn
the adjuster screw (A) until the cutting attachment
rotates. Turn the adjuster screw 1/2 turn more.
4. If the start throttle speed is too high, turn the adjuster
screw (A) counterclockwise until the cutting
attachment stops. Turn the adjuster screw 1/2 turn
more.
To adjust the idle speed
Your Husqvarna product is designed and made to
specifications that decrease harmful emissions.
• Make sure that the air filter is clean and the air filter
cover is attached before you adjust the idle speed.
• Adjust the idle speed with the idle adjustment screw
T which is identified with "T" mark.
WARNING: If the cutting attachment
does not stop when you adjust the idle
speed, turn to your nearest servicing
dealer. Do not use the product until it is
correctly adjusted or repaired.
• The idle speed is correct when the engine operates
smoothly in all positions. The idle speed must be
below the speed when the cutting attachment starts
to turn.
1069 - 005 -
To start with a
A
1. Turn the idle adjustment screw clockwise until the
cutting attachment starts to turn.
2. Turn the idle adjustment screw counterclockwise
until the cutting attachment stops.
Technical data on page 28 for the
Note: See
recommended idle speed.
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.
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.
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