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9
Every 10 to 15 hours of operation:
n Remove and clean the spark plug. Adjust
the spark plug electrode gap to 0.6 - 0.7
mm. If the spark plug must be replaced,
use only an NGK CMR5H or equivalent
resistor type spark plug of the correct
heat range. See Figure 17.
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.
Clean the spark plug
and check the gap at
the electrode.
10/15-Hour Maintenance
0.6–0.7 mm
Figure 17
NOTE:
The NGK CMR5H also meets the require-
ments for electro magnetic compliance (EMC).
n Remove and clean the cylinder cover and
clean grass and dirt from the cylinder fins.
Every 50 hours of operation
(more often in dusty or extreme
conditions)
Clean
Debris
Hooked
Wire
Figure 18
50-Hour Maintenance
Filter Element
Figure 19
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.
n Use a wire hook to extract the fuel filter
from inside the fuel tank. (Figure 19).
Inspect the fuel filter element. If it shows
signs of contamination from debris,
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 unitl it can be inspected by a
Shindaiwa-trained service technician.
10-Hour Maintenance
Every 10 hours of operation, (more
frequently in dusty or dirty conditions):
n Remove the air cleaner element from
the air cleaner housing and clean it
thoroughly with soap and water. Rinse
and dry thoroughly. Replace filter ele-
ment if necessary. See Figure 16.
CAUTION!
Do not operate the machine if the air
cleaner or element is damaged, or if
the element is water-soaked.
Figure 16
Air
Cleaner
Element
Air Cleaner
Cover