Checking The Engine Oil Level; Checking The Spark Plug; Maintaining The Air Filter; Checking The Drive - AS MOTOR AS 901 SM Operating Instructions Manual

- cooling fins of the engine
clean at all times.

Checking the engine oil level

Never allow the oil level to be too low other-
wise the engine can be damaged. Never fill in
too much oil. Otherwise, there is the risk that
the oil enters and destroys the air filter.
For this, observe the attached operating in-
structions of the engine.

Checking the spark plug

Danger!
The ignition system generates an
electromagnetic field.
Wearers of pacemakers must not
work on live parts.
Soiled spark plugs reduce the engine output.
Clean the electrode of the spark plug with a
brass wire brush. Check the electrode gap
(see operating instructions of the engine manu-
facturer). Make sure that the insulator around
the electrode is not damaged. Never use a
damaged spark plug.
Tighten the spark plug using the correct torque
(see operating instructions of the engine manu-
facturer).
Always check both spark plugs.

Maintaining the air filter

Danger!
Cleaning agents pose a fire and
explosion hazard.
Never clean the air filter with flam-
mable solvents.
Make sure that the air filter is always clean. A
dirty air filter reduces the engine performance
and leads to increased engine wear and fuel
consumption. Irrespective of the operating
hours, change the filter insert at least once a
year. Do not operate the engine without air
filter.
20
For this, observe the attached operating in-
structions of the engine.

Checking the drive

1. Put the device on a non-slip surface (e.g.
concrete or asphalt).
2. Switch off the engine.
3. Set the switching lever to a forward gear.
4. Actuate the drive lever.
5. Try to pull the device backwards.
If the rear wheels lock, the drive is correctly
adjusted. If you can pull the device, the drive
must be re-adjusted.
1
Re-adjusting the drive
Turn the adjusting screw (1) at the drive so that
the wheels lock, while the drive is actuated,
when the device is pulled. If there is no im-
provement after the adjustment, have the
device checked by an authorised service
centre.

Checking the parking brake

1. Put the device on a non-slip surface (e.g.
concrete or asphalt).
2. Switch off the engine.
3. Switch the switching lever to neutral posi-
tion.
4. Try pulling the device backwards.
If the rear wheel lock, the parking brake is
correctly adjusted. If the device can be easily
pulled backwards, the parking brake must be
re-adjusted. Contact an authorised service
centre to do so.