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10/15-Hour Maintenance
CAUTION!
Before removing the spark plug, clean
the area around the plug to prevent dirt
and debris from getting into the engine's
internal parts.
Every 10 to 15 hours
of operation:
Remove and clean the spark plug.
See Figure 26. Adjust the spark plug
electrode gap to 0.024-inch (0.6 mm).
If the plug must be replaced, use only:
Champion CJ8 or equivalent type spark
plug of correct heat range.
50-Hour Maintenance
Ever y 50 hours of operation
(more frequently in dusty or dirty
conditions):
Remove and clean the cylinder cover
and clean dirt and debris from the cylin-
der cooling fins.
Lubricate the gearcase. To perform
this operation, first remove the gearcase
from the outer tube as follows
(Figure 28.):
Gearcase
Clamp Bolt
Outer Tube
AH231_34
Gearcase
Figure 28
CAUTION!
Do not remove the D-shaped shim
washer from the gearcase clamp! The
shim washer prevents damage from
overtightening the tube clamp screw.
a. Loosen the gearcase clamp bolt.
b. Remove the index bolt from the
gearcase.
c. Slide the gearcase out of the tube.
12
Figure 26
Lubricate the cutter assembly gear-
box by pumping one or two strokes
of lithium-base grease into the grease
fitting using a lever-type grease gun. See
Figure 27.
Using a grease gun, pump lithium-base
grease (about 10 grams) into the grease
fitting on the gearcase until you see old
grease being purged from the gearcase
(Figure 29). Purged grease will be
visible in the outer tube cavity. Clean
up excess grease, then reassemble the
gearcase onto the outer tube. Make sure
the index bolt fits into the hole on the
outer tube. Securely tighten both bolts.
AH231_35
Index Bolt
Figure 29
Servicing the fuel filter
CAUTION!
Make sure you do not pierce the fuel
line with the end of the hooked wire.
The line is delicate and can be dam-
aged easily.
Clean the spark
plug and check the
gap at the electrode.
0.024 inch
AH231_31
(0.6 mm)
AH231_32
Gearcase
Grease Fitting
CAUTION!
Overlubricating can cause the gearbox
to operate sluggishly and can cause
grease to leak out.
Gearbox
Grease Fitting
Figure 27
Use a hooked wire to extract the fuel
filter from inside the fuel tank (Figure
30). Inspect the fuel filter element. If it
shows signs of contamination from de-
bris, replace it with a genuine Shindaiwa
replacement fuel filter element. Before
reinstalling the filter, inspect the fuel
line. If you discover damage or deterio-
ration, the unit should be removed from
service until it can be inspected by a
Shindaiwa-trained service technician.
Hooked
Wire
Filter Element
Figure 30
AH231_33
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