Maintenance
- Carburetor malfunctions
- Starting problems
- Engine power reduction
- Unnecessary wear on
engine parts
- Abnormal fuel consumption
If the spark plug is dirty, clean
it and check electrode gap.
Readjust if necessary. The
correct gap is 0,5 mm (0,
020”) The spark plug should
be replaced after about a
month in operation or earlier if
the electrodes are badly
eroded.
Spark Plug
The air filter must be regularly cleaned from
dust and dirt in order to avoid:
3 Stage Air Filtration
Clean the air filter daily or
more often if the air is
exceptionally dusty in the
working area.
Disassemble the air filter by
removing the air filter cover
and unscrew the filter. When
reassembling, make sure that
the filter is tight against the
filter holder.
Clean the filter by brushing or
shaking it.
A more thorough cleaning of
the filter is obtained by
washing it with soap and
water.
The spark plug condition is influenced by:
- An incorrect carburetor setting
- Wrong fuel mixture (to much oil in gasoline)
- A dirty air filter
If the engine is low on
power, difficult to start or
runs poorly at idling speed,
always check the spark plug
first.
Changing a broken starter cord
Loosen the screws, that hold
the device against the crank-
case and remove the starter
device
Pull out the cord approx. 30
cm and lift it up into the notch
in the pulley. Zero-set the
recoil spring by letting the
pulley rotate slowly back-
wards. Undo the screw in the
centre of the pulley and
remove the pulley.
Insert and fasten a new starter
cord in the pulley. Wind
approx. 3 turns of the starter
cord on to the pulley. As-
semble the starter pulley
against the recoil spring,
sothe end of the spring
engages to the pulley. Fit the
screw in the center of the the
pulley. Carry the starter cord
through the hole in the starter
housing and the starter
handle. Make a knot on the
starter cord.
Tensioning the recoil spring
Lift the sarter cord up in the
notch on the starter pulley
and turn the starter pulley 2
turns clockwise.
NOTE! Check that the
starter pulley can be turned
at least half a turn, when the
starter cord is entirely pulled
out.
Changing the broken recoil spring
Lift starter pulley
Dissasemble the recoil spring by tapping the
pulley lightly against a working bench. If the
spring pops out when assembling it should be
mounted again, out and in the center.
Lubricate the recoil spring with thin oil. As-
semble the starter pulley, and tension the
recoil spring.
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