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Maintenance
General maintenancel
IMPORTANT!
MAINTENANCE, REPLACEMENT
OR REPAIR OF EMISSION CON-
TROL DEVICES AND SYSTEMS
MAY BE PERFORMED BY ANY
REPAIR ESTABLISHMENT OR INDI-
VIDUAL; HOWEVER, WARRANTY
REPAIRS MUST BE PERFORMED
BY A DEALER OR SERVICE CEN-
TER AUTHORIZED BY ECHO, INC.
THE USE OF PARTS THAT ARE NOT
EQUIVALENT IN PERFORMANCE
AND DURABILITY TO AUTHORIZED
PARTS MAY IMPAIR THE EFFECTIVE-
NESS OF THE EMISSION CONTROL
SYSTEM AND MAY HAVE A BEARING
ON THE OUTCOME OF A WARRANTY
CLAIM.
NOTE:
Using non-standard replacement
parts could invalidate your Shindaiwa
warranty.
Daily maintenance
Prior to each work day, perform the
following:
■
Remove all dirt and debris from the
engine, check the cooling fins and
air cleaner for clogging, and clean
as necessary.
■
Carefully remove any accumulations
of dirt or debris from the muffler and
fuel tank. Check cooling air intake
area at base of crankcase. Remove
all debris. Dirt build-up in these
areas can lead to engine overheat-
ing, fire, or premature wear.
WARNING!
Always wear gloves
when working around the cutter
assembly.
■
Clean any debris or dirt from the
cutting attachment.
■
Check for loose or missing screws
or components. Make sure the cut-
ter attachment is securely fastened.
16
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 perform-
ing service or maintenance.
Muffler
This unit must never be operated with
a faulty or missing spark arrester or
muffler. Make sure the muffler is well
secured and in good condition. A worn
or damaged muffler is a fire hazard
and may also cause hearing loss.
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.
Cooling
fins
Remove all dirt and debris from the engine and check the cooling fins
■
Check the entire unit for leaking fuel
or grease.
■
Make sure nuts, bolts, and screws
(except carburetor idle speed
adjusting screws) are tight.
WARNING!
Non-standard accessories,
cutting attachment, or replacement
parts may not operate properly with
your unit and may cause damage
and lead to personal injury.
Air Filter
The H4 engine that powers your
Shindaiwa model is a hybrid 4-stroke
engine. As a hybrid, the engine is lubri-
cated by oil mixed with the gasoline
and air from the carburetor that moves
through and around the internal parts
of the engine in a similar way that a
2-stroke engine is lubricated. Without the
heavy duty 2-stage air filter equipped on
all H4 engines, dust and dirt could also
move through the engine, decreasing
engine life, increasing valve wear and
the need for more frequent valve adjust-
ments. To keep your H4 engine strong
and reliable, Shindaiwa recommends
that you check and service the air fil-
ter as instructed in the 10-Hour Mainte-
nance section that follows.
Cooling
fins
Air
intake
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