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Maintenance
WARNING!
Before performing any main-
tenance, 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
maintenance.
WARNING!
Non-standard accessories, cut-
ting attachment, or replacement parts
may not operate properly with your unit
and may cause damage and lead to
personal injury.
IMPORTANT!
MAINTENANCE, REPLACEMENT OR REPAIR OF EMISSION CONTROL DEVICES AND SYSTEMS MAY BE PERFORMED
BY ANY REPAIR ESTABLISHMENT OR INDIVIDUAL; HOWEVER, WARRANTY REPAIRS MUST BE PERFORMED BY A
DEALER OR SERVICE CENTER AUTHORIZED BY ECHO,INC. THE USE OF PARTS THAT ARE NOT EQUIVALENT IN PER-
FORMANCE AND DURABILITY TO AUTHORIZED PARTS MAY IMPAIR THE EFFECTIVENESS OF THE EMISSION CON-
TROL SYSTEM AND MAY HAVE A BEARING ON THE OUTCOME OF A WARRANTY CLAIM.
General maintenance
NOTE:
Using non-standard replacement parts could invalidate your Shindaiwa warranty.
Mufer
This unit must never be operated with a faulty or miss-
ing spark arrester or mufer. Make sure the mufer is well
secured and in good condition. A worn or damaged mufer
is a re hazard and may also cause hearing loss.
Spark Plug
Keep the spark plug and wire connections tight and clean.
Fasteners
Make sure nuts, bolts, and screws (except carburetor
adjusting screws) are tight.
Air Filter
The H4 engine that powers your Shindaiwa model is a hybrid
4-stroke engine. As a hybrid, the engine is lubricated 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 lter equipped on all H4 engines, dust and dirt could
also move through the engine, decreasing engine life, increas-
ing 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 lter as
instructed in the 10-Hour Maintenance section that follows.
Prior to each work day, perform the
following:
Remove all dirt and debris from the
■
engine, check the cooling ns and
air cleaner for clogging, and clean
as necessary.
Carefully remove any accumula-
■
tions of dirt or debris from the muf-
er 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
overheating, re, or premature
wear.
Daily maintenance
Remove all dirt and debris from the engine and check the cooling ns
Cooling
ns
Air
intake
Cooling
ns
WARNING!
Always wear gloves when
working around the cutter assembly.
Clean any debris or dirt from the cut- ■
ting attachment.
Check for loose or missing screws
■
or components. Make sure the cutter
attachment is securely fastened.
Check the entire unit for leaking
■
fuel or grease.
Make sure nuts, bolts, and screws
■
(except carburetor idle speed
adjusting screws) are tight.