General Maintenance
IMPORTANT!
MAINTENANCE, REPLACEMENT
OR REPAIR OF EMISSION CON-
TROL DEVICES AND SYSTEMS MAY
BE PERFORMED BY ANY REPAIR
ESTABLISHMENT OR INDIVIDUAL.
ALL WARRANTY REPAIRS MUST
BE PERFORMED BY A DEALER OR
SERVICE CENTER AUTHORIZED
BY SHINDAIWA KOGYO CO., LTD.
THE USE OF PARTS THAT ARE NOT
EQUIVALENT IN PERFORMANCE AND
DURABILITY TO AUTHORIZED PARTS
MAY IMPAIR THE EFFECTIVENESS OF
THE EMISSION CONTROL SYSTEM
AND MAY HAVE A BEARING ON THE
OUTCOME OF A WARRANTY CLAIM.
WARNING!
Before performing any maintenance,
repair or cleaning work on the unit,
make sure the engine and cutting
attachment are completely stopped.
Disconnect the spark plug wire
before performing service or main-
tenance work.
Daily Maintenance
Prior to each work day, perform the
following:
Remove any dirt and debris from the
engine, check the cooling fins and air
cleaner for clogging, and clean them
as necessary.
10-Hour Maintenance
Ever y 10 hours of operation...
(more frequently in dusty or dirty
conditions):
Remove the air cleaner element from
the carburetor and wash it with soap
and water. Rinse the element thor-
oughly with clean water.
Squeeze out the water and allow the
element to dry before reinstalling.
10/15-Hour Maintenance
Clean the spark plug and
check the gap at the electrode.
Figure 22
WARNING!
Non-standard parts may not oper-
ate properly with your unit and may
cause damage and lead to
personal injury.
NOTE:
Using non-standard replacement parts could
invalidate your Shindaiwa warranty.
Muffler
WARNING!
Never operate this unit with a dam-
aged or missing muffler or spark
arrester! Operating with missing or
damaged exhaust components is a
fire hazard, and may also damage
your hearing.
Hard starting or a gradual loss of
performance may be caused by carbon
deposits lodged in the muffler's spark
arrester screen. In such cases, per-
formance can usually be restored by
removing the spark arrester screen and
giving it a thorough cleaning with a stiff
bristle brush.
Carefully remove any accumulations
of dirt or debris from the muffler
and fuel tank. Dirt buildup in these
areas can lead to engine overheating,
premature wear or fire.
CAUTION!
Do not operate the unit if the air
cleaner or element is damaged, or if
the element is wet.
0.024 inch
(0.6 mm)
In case of heavy carbon deposits or when
there is no improvement in performance
after cleaning the spark arrester screen,
consult with your nearest Shindaiwa
dealer.
Screw
Spark Arrester
Figure 20
Spark Plug
Keep the spark plug and wire connec-
tions tight and clean.
Fasteners
Make sure nuts, bolts, and screws
(except carburetor adjusting screws)
are tight.
Check for loose or missing screws or
components. Make sure the trimmer
head is securely fastened.
Check the unit for leaking fuel or
grease.
Loosen the
screw
Remove and clean the element
Figure 21
Ever y 10 to 15 hours of operation:
Remove and clean the spark plug.
Adjust the spark plug electrode gap to
0.024-inch (0.6 mm). If the plug must
be replaced, use only a NGK BPMR8Y
or equivalent type spark plug of the
correct heat range.
22025
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.
Muffler
22028
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