1
n
INSPECTION Inspect the entire blower
and tubes for damage, including loose
or missing components, and repair as
necessary.
n
SPARK PLUG Replace the spark plug
with a NGK CMR5H (or equivalent),
gapped to 0.04” (0.6 mm).
n
FUEL FILTER Use a hooked wire to
extract the fuel filter from inside the fuel
tank. See Figure 3.
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.
(more frequently if reduced
performance is noted)
n
Inspect the filter element for signs of
contamination from debris. A contami-
nated fuel filter should be replaced with
a new Shindaiwa replacement element.
Before reinstalling the filter, inspect the
condition of the fuel line. If you note
damage or deterioration, the blower
should be removed from service until it
can be inspected by a Shindaiwa-trained
service technician.
n
COOLING SYSTEM Use a wood or
plastic scraper and a soft brush to
remove dirt and debris from the cylinder
fins and crankcase.
Fuel
Filter
Fuel Tank
Hooked
Wire
Every 50 Hours
Figure 23
Every 10/15 Hours
CAUTION!
Never allow dirt or debris to enter the
cylinder bore! Before removing the
spark.plug,.thoroughly.clean.the.spark.
plug and cylinder head area!
Allow.the.engine.to.cool.before.servic-
ing the spark plug! Cylinder threads
can.be.damaged.by.tightening.or.loos-
ening.the.spark.plug.while.the.engine.
is hot!
0.024"
(0.6mm)
Clean the spark
plug and check
the gap at the
electrode.
Figure 22
NGK
CMR6H
Counter-clockwise
to remove.
1. Use the spark plug wrench to remove
the spark plug. See Figure .
. Clean and adjust the spark plug gap
to 0.04” (0.6mm). If the plug must be
replaced, use a NGK CMR5H or equiva-
lent type plug of the correct
heat range.
3. Install the spark plug finger-tight in the
cylinder head, then tighten it firmly
with the spark plug wrench. If a torque
wrench is available, torque the spark
plug to 148–165 inch-pounds.
139/150-Hour Maintenance
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 0.04 inch (0.6 mm).
NOTE:
The NGK CMR5H also meets the require-
ments for electro magnetic compliance (EMC).
Maintenance after first 139-hours, then every 150-hours thereafter.
