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Every 10 to 15 hours of operation:
Remove and clean the spark plug.
Adjust the spark plug electrode gap to
0.6 mm. If the plug must be replaced,
use a NGK BMR6A or equivalent
spark plug of the correct heat range.
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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
10/15-Hour Maintenance
Clean the spark plug and check the
gap at the electrode.
0.6 mm
CAUTION!
Incorrect spark plug installation can
result in serious engine damage.
16
50-Hour Maintenance
Every 50 hours of operation (more
frequently in dusty or dirty conditions):
Remove and clean the cylinder cover
and clean dirt and debris from the
cylinder cooling fins.
Remove the sprocket cover and inspect
the sprocket for excessive dirt, debris,
or wear. Remove the guide bar and
clean out the guide bar groove. If the
sprocket is excessively worn, replace it
with a new one.
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Inspect the
sprocket
Lubricate the gear case. To perform
this operation, first remove the gear case
from the upper outer tube as follows.
Loosen the gear case clamp bolt.
Remove the index bolt from the gear
case.
Slide the gear case out of the tube.
Using a lever-type grease gun, pump
lithium-base grease (about 10 grams)
into the grease fitting until you see old
grease being purged from the gear case,
this can be seen in the outer tube cavity
at the input end of the gear case. Clean
up excess grease, then reassemble the
gear case onto the outer tube.
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Filter Element
Hooked Wire
Gear Case Clamp
Index
Bolt
Grease Fitting
CAUTION!
Make sure you do not pierce the
fuel line with the end of the hooked
wire. The line is delicate and can be
damaged easily.
Use a hooked wire to extract the fuel
filter from inside the fuel tank. Inspect
the fuel filter element for signs of
contamination. Replace it with a new
one if required. Before reinstalling
the filter, inspect the fuel line. If you
find damage or deterioration, remove
the unit from service until it can be
inspected by a Shindaiwa-trained
service technician.
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Clean or replace fuel lter