Cleaning; Troubleshooting; Maintenance; Maintenance Intervals - Stihl WP 900.0 Gebrauchsanleitung

14 Cleaning

14 Cleaning
14.1 Cleaning the Water Pump
► Shut off the engine.
► Allow water pump to cool down.
► Clean the water pump with a damp cloth or
STIHL resin solvent.
► Clean cooling air slots with a soft brush.
14.2 Cleaning the Suction Strainer
► Stop the engine.
► Rinse the suction strainer under running
water.
► For coarser soiling, detach lower part of suc‐
tion strainer (1) from upper part of suction
strainer (2) by turning it anti-clockwise and
remove. Rinse the inside of the suction
strainer under running water.

17 Troubleshooting

17.1 Remedying Water Pump Faults
Fault
Engine cannot be
started.
0478-701-9909-C
Cause
Insufficient fuel in fuel
tank.
Carburettor overhea‐
ting.
Carburettor iced up.
Main switch set to
position 0.
Inferior, dirty or old
fuel in tank.
Spark plug socket is
detached from spark
plug or ignition lead is
not properly fastened
to socket.
Spark plug is dirty,
damaged or elect‐
rode gap is incorrect.
Engine flooded.
Air filter dirty.
Oil level in engine too
low.
14.3 Cleaning the Hoses
► Shut off the engine.
► Clean the hoses with a damp cloth.
► Rinse the hoses with water.

15 Maintenance

15.1

Maintenance Intervals

Maintenance intervals are dependent on the
ambient conditions and the working conditions.
STIHL recommends the following maintenance
intervals:
Engine
► Maintain the engine as described in the engine
instruction manual.
Water pump
► Have the water pump inspected annually by a
STIHL specialist dealer.

16 Repairing

16.1 Repairing the Water Pump
The water pump cannot be repaired by the user.
► If the water pump is damaged: Do not use
your water pump and contact your STIHL
servicing dealer for assistance.
Remedy
► Refuel water pump.
► Allow water pump to cool down.
► Allow water pump to warm up.
► Press main switch.
► Use fresh, good quality fuel (unleaded petrol).
► Clean carburettor.
► Clean fuel line.
► Clean or replace spark plug.
► Check connection between ignition lead and plug.
► Clean or replace spark plug.
► Adjust electrode gap.
► Remove spark plug and dry; set main switch to 0 and
pull starter rope repeatedly with spark plug removed.
► Clean or replace air filter.
► Add engine oil.
English
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