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clean it and check
the electrode
gap. Re-adjust
if necessary. The correct gap is 0.024" (0.6 mm).
The spark plug should be replaced after about 100
operation hours or earlier if the electrodes
are badly
eroded.
0.024"
(0.6 mm)
Fig. 22
NOTE
In some areas, local law requires using a resistor
spark plug to suppress
ignition
signals. If this
machine
was originally
equipped
with resistor
spark
plug, use same type of spark plug for
replacement.
Angle transmission
(Fig. 23)
Check angle transmission
or angle gear for grease
level about every 50 hours of operation by removing
the grease filler plug on the side of angle transmission.
If no grease can be seen on the flanks of the gears,
fill the
transmission
with
quality
lithium
based
multipurpose
grease up to 3/4. Do not completely fill
the transmission.
Fig. 23
Maintenance
schedule
Below
you
will find
some
general
maintenance
instructions. For further information please contact
your Hitachi dealer.
Daily maintenance
0
Clean the exterior of the unit.
0
Check that the harness is undamaged.
0
If your unit has blade, check the blade guard for
damage or cracks. Change the guard in case of
impacts or cracks.
0
Check that the cutting
attachment
is properly
centred, sharp, and without cracks. An off-centre
cutting attachment
induces heavy vibrations that
may damage the unit.
0
Checkthatthe
cutting attachment nut issufficiently
tightened.
0
If your unit has blade, make sure that the blade
transport
guard is undamaged
and that it can be
securely fitted.
0
Check
that nuts
and screws
are sufficiently
tightened.
Weekly
maintenance
O Check the starter, especially the cord and return
spring.
O Clean the exterior of the spark plug.
© Remove it and check the electrode gap. Adjust it
to 0.024" (0.6 mm), or change the spark plug.
O Check that the angle gear is filled with grease up
to 3/4.
O Clean the air filter.
Monthly
maintenance
O Rinse the fuel tank with gasoline.
O Clean the exterior of the carburetor and the space
around it.
O Clean the fan and the space around it.
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