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27
15. MAINTENANCE – 2-STROKE MOTOR UNIT
– Tighten the spark plug using the spark plug
spanner , before replacing the H.T. lead .
The rubber surround of the H.T. lead cap should
be tucked inside the plastic housing of the body
to make sure of a good connection with the spark
plug.
15.3 ENGINE IDLE SPEED ADJUSTMENT
(FIG.38)
With the engine running at idle the attachment
must not operate. For example, the brush cutter
blade must not spin while the engine idles. Adjust
as necessary.
– Run the engine until it is warm.
– Turn screw
anticlockwise to decrease the
engine idle speed.
15.4 REPLACING THE FUEL FILTER (FIG.39)
To make sure the supply of fuel remains clean there
is a small fuel filter attached to the pick-up tube
inside the fuel tank. This must be checked regularly
and replaced when clogged.
– Drain fuel tank completely.
– Gently pull the fuel tank cap and chain to release
the spring clip
from inside the tank mouth.
– Tilt the engine so that the fuel tank opening is
the lowest point and shake. This will cause the
fuel filter
to fall in to reach.
– Gently pull the filter clear of the tank mouth.
– Without letting go of the pick-up line
, squeeze the hose clip
and move it away
from the filter.
– While still holding the fuel line, pull the clogged filter off and insert the clean filter.
– Reposition the hose clip
to grip the fuel line on to the filter.
– Push the filter back inside the tank.
– Squeeze the spring clip
and push it back inside the mouth of the fuel tank.
FIG. 37
FIG. 38
FIG. 39
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