17
Spark Arrester Screen Maintenance
If the engine becomes sluggish and low on
power, check and clean the spark arrester
screen.
WARNING!
Never operate the unit with a damaged
or missing muffler or spark arrester!
Operating with a missing or damaged
spark arrester is a fire hazard and
could also damage your hearing.
1. With a 3 mm hex wrench remove the
3 engine cover screws and the engine
cover. See Figure 41.
2. With a 4 mm hex wrench remove the
3 muffler bolts and the muffler.
See Figure 41.
3. With a small flat bladed screwdriver
remove the 2 screws holding the spark
arrester screen and cover to the muffler.
See Figure 41.
4. Remove the screen and clean it with a
stiff bristle brush.
5. Inspect the cylinder exhaust port for any
carbon buildup.
IMPORTANT!
If you note excessive carbon buildup,
consult with an authorized Shindaiwa
servicing dealer.
6. Reassemble the spark arrester, muffler
and engine cover in the reverse order of
disassembly.
139-Hour or Annual Maintenance
NOTE:
The NGK CMR5H also meets the requirements
for electro magnetic compliance (EMC).
n
Combustion chamber should be decar-
bonized, and the valve clearance should
be adjusted. It is highly recommended
that this is done by a Shindaiwa-trained
service technician.
n
Replace the spark plug annually: Use
only NGK CMR5H or equivalent
resistor type spark plug of the correct
heat range. Set spark plug electrode gap
to 0.6 -0.7 mm.
Maintenance after first 139-hours, then every 150-hours thereafter.
341033
Figure 41
Muffler
Bolts
Spark Arrester
Screen
Cover
Cover
Screws
Muffler
Gasket
Engine Cover
Screws
Muffler
Spark Arrester
Cover
