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22 – English
Maintenance
Checking the Tire Pressure
The tire pressure should be 60 kPa / 0.6 bar / 8,7 PSI on all
wheels. In order to improve traction, the pressure in the rear
tyres can be reduced to 40 kPa / 0.4 bar / 6 PSI.
Ignition system
The engine is equipped with an electronic ignition system.
Only the spark plug requires maintenance.
For recommended spark plug, see Technical data.
Replacing the spark plug
1 Remove the ignition cable boot and clean around the
spark plug.
2 Remove the spark plug with a 5/8” (16 mm) spark plug
socket wrench.
3 Check the spark plug. Replace the spark plug if the
electrodes are burned or if the insulation is cracked or
damaged. Clean the spark plug with a steel brush if it is to
be reused.
4 Measure the electrode gap with a gapping tool. The gap
should be 0.75 mm/0.030”. Adjust as necessary by
bending the side electrode.
5 Reinsert the spark plug, turning by hand to avoid
damaging the threads.
6 Tighten the spark plug, once it touches the seating, with
the spark plug socket wrench. Tighten the spark plug so
that the washer is compressed. A used spark plug should
be turned 1/8 of a turn from the seated position. A new
spark plug should be turned a 1/4 turn from the seated
position.
7 Replace the ignition cable shoe.
Fuses
The main fuse is placed in a detachable holder behind the
battery under the protective cover.
Type: Flat pin, 15 A.
Do not use any other type of fuse when replacing.
A blown fuse is indicated by a burnt connector. Pull the fuse
from the holder when replacing.
The fuse is there to protect the electrical system. If it blows
again shortly after replacement, it is due to a short circuit,
which must be fixed before the machine can be put into
operation again.
Check the safety system
The machine is equipped with a safety system that prevents
starting or driving under the following conditions.
The engine can only be started when:
• The cutting deck is raised and the parking brake is
applied.
The engine should stop when:
• The cutting deck is lowered and the driver rises from the
seat.
• The cutting deck is in its raised position, the parking brake
is not applied and the driver rises from the seat.
Check daily to ensure that the safety system works by
attempting to start the engine when one of the conditions
above is not met. Change the conditions and try again.
Checking the engine’s cooling air
intake
Clean the air intake grille in the engine cover behind the
driver’s seat.
IMPORTANT INFORMATION Different tire pressures on
the front tires will result in the blades cutting the grass at
different heights.
IMPORTANT INFORMATION
Fitting the wrong spark plug type can damage the engine.
IMPORTANT INFORMATION
Inadequately tightened spark plugs can cause overheating
and damage the engine. Tightening the spark plug too
much can damage the threads in the cylinder head.
IMPORTANT INFORMATION
Do not turn over the engine if the spark plug or ignition cable
has been removed.