Shindaiwa T254, Owner'S/Operator'S Manual

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14
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 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 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
adjustments. To keep your H4 engine strong and reliable,
Shindaiwa recommends that you check and service the air filter
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 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 overheating, fire,
or premature wear.
Daily maintenance
■
Clean any debris or dirt from the
cutting attachment.
Remove all dirt and debris from the engine and check the cooling fins
Cooling
fins
Air
intake
Cooling
fins
WARNING!
Always wear gloves when
working around the cutter assembly.
■
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.
Components of air filter
Filter element
Prefilter
Loosen
fasteners
Remove the cover of the air filter
10-Hour maintenance
(more frequently in dusty conditions)
1. Remove the air filter cover by
loosening the cover screw(s) and
lifting.
2. Remove and inspect the pre-filter.
If the pre-filter is torn or otherwise
damaged, replace it with a new
one.
3. Clean the pre-filter with soap and
water. Let dry before reinstalling.
4. Inspect the air filter element. If the
element is damaged or distorted,
replace it with a new one.
5. Tap filter gently on a hard surface to
dislodge debris from element or use
compressed air from the inside to blow
debris out and away from the air filter
element.
6. Install the air filter element, pre-filter
and cover in the reverse order of
removal.
IMPORTANT!
Direct the air stream at the inside face
of the filter only!
CAUTION!
Never operate the unit if the air
cleaner assembly is damaged or
missing!
Maintenance (continued)