FUEL FILTER
Maintenance Interval:
The fuel filter should be replaced after every
100
hours of operation.
Maintenance:
The fuel filter is attached to the end of the fuel
pick-up hose inside the fuel tank. To replace the fuel filter, first
make sure the fuel tank is empty. Remove the fuel cap. Using
a wire hook, gently pull the fuel filter out though the fuel filter
opening. Grasp the fuel hose next to the fuel filter fitting and
remove the filter
but do not release the hose.
While still
holding on to the fuel hose, attach the new fuel filter. Drop the
fuel filter back into the fuel tank'. Make sure that the fuel filter
is not stuck in a corner of the tank and that the fuel hose is not
doubled over (kinked) before refueling.
SPARK PLUG
FUEL TANK
Maintenance Interval:
The spark plug should be removed from the engine and checked after
each
25
hours of operation and replaced after every
100
hours of operation.
Maintenance:
With the engine at ambient (room) tempera
ture. Twist the high tension lead boot on the spark plug back
and forth a couple of times to loosen boot then pull the boot off
of the spark plug. Remove the spark plug. The electrodes
can be cleaned with a stiff brush. Adjust the electrode air gap
to
0.6-0.7
mm
(0.024-0.028
in.). Replace the spark plug if it
is oil-fouled, damaged or if the electrodes are worn down.
Do not overtighten the spark plug when installing.
The
tightening torque is
10.7-16.6
Nm
(95-148
in. lbs.).
CYLINDER COOLING FINS
TIPS
Maintenance Interval:
The cylinder cooling fins should be cleaned after every
25
hours of opera
tion or once a week which ever comes first. Air must flow freely around and through the cylinder
cooling fins to prevent engine overheating. Leaves, grass, dirt and debris buildup on the fins will
increase the operating temperature of the engine which can reduce engine performance and short
en engine life.
Maintenance:
With the engine at ambient (room) tempera
ture. Loosen the engine cover screw and lift off the engine
cover. Clean all dirt and debris from the cooling fins and from
around the cylinder base .. Reinstall the engine cover.
ENGINE COVER
COOLING
FINS
