21
Maintenance and care
Cleaning air filter
1. Close choke. Loosen air cleaner cover knob and remove air
cleaner cover (B).
2. Remove air filter (A) (air filter is located inside air cleaner
cover).
3. Brush dirt from filter or clean with compressed air from car-
burettor side.
4. Reinstall air filter with cover, after installing air filter to cover.
5. Tighten air cleaner cover knob.
Replacing fuel filter
1. Use a piece of metal wire or the like to pick up fuel filter (A)
through fuel tank opening.
2. Pull old filter from fuel line (B).
3. Install new fuel filter.
Carburettor adjustment
Every unit is test run at the factory and the carburettor is fine
tuned for maximum performance.
Before adjusting carburettor, clean or replace air filter, start en-
gine and run several minutes to bring it to operating temperature.
The engine must return to idle speed whenever the throttle lever
is released. Idle speed is adjustable, and must be set low enough
to permit the engine clutch to disengage the cutting attachment.
To adjust the carburettor proceed as follow:
1. Place the unit on the ground, then start the engine, and then
allow it to idle 2-3 minutes until warm.
2. If the attachment moves when the engine is at idle, reduce
the idle speed by turning the idle adjustment screw(T) coun-
ter-clockwise.
3. Repeat the process of accelerating to full throttle and return
to idle a few times. Check that the cutting attachment stops
moving at idle.
4. If a tachometer is available, the engine idle speed should be
final adjusted to the settings recommended in the Specifica-
tions section.
NOTE
When reinstall air filter, fit it in the frame of the cleaner case.
NOTE
If filter is excessive dirty or no longer fits properly, replace it.
WARNING
YOU MAY ADJUST THE IDLE SPEED ONLY by turning the idle speed adjustment screw (T).
During carburettor adjustment, the cutting attachment may move. Pay utmost attention and care to the cutting at-
tachment so as not to get injured by the moving cutter.
When carburettor adjustment is completed, the cutting attachment should not move at idle speed, otherwise serious
personal injury may result.
You must NOT carry out any Carburettor adjustment, other than the idle speed. All other adjustments MUST be per-
formed by an authorized service dealer, or serious personal injury may result due to malfunction of the engine.
CAUTION
When there is trouble with the carburettor, contact an authorized service dealer.
