Maintenance - Shindaiwa AH242 Serie Manual Del Propietario - Operador

Maintenance

General maintenance
IMPORTANT!
MAINTENANCE, REPLACEMENT OR
REPAIR OF EMISSION CONTROL DEVICES
AND SYSTEMS MAY BE PERFORMED BY
ANY REPAIR ESTABLISHMENT OR INDI-
VIDUAL; HOWEVER, WARRANTY REPAIRS
MUST BE PERFORMED BY A DEALER OR
SERVICE CENTER AUTHORIZED BY SHIN-
DAIWA CORPORATION THE USE OF PARTS
THAT ARE NOT EQUIVALENT IN PERFOR-
MANCE AND DURABILITY TO AUTHO-
RIZED PARTS MAY IMPAIR THE EFFEC-
TIVENESS 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.
Cutter blade adjustment
WARNING!
The cutter blades are very
sharp! Always wear gloves when work-
ing around the cutter assembly.
Cutting performance of your machine
depends a great deal on proper cutter blade
adjustment. Properly adjusted blades will
oscillate freely yet help prevent binding of
cut material between blades. Adjust blades
as follows:
1. Loosen all blade locknuts at least one
full turn.
2. Tighten each blade shoulder bolt
firmly, and then loosen the shoulder
bolts 1/4 to 1/2 turn.
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 overheating, fire,
or premature wear.
■
Clean any debris or dirt from the cut-
ting attachment.
12
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.
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.
3. Working from the gearcase end, lock
each bolt in place by firmly tightening
its locknut while preventing the shoul-
der bolt from turning.
When shoulder bolt adjustment is cor-
rect, there should be a gap of 0.25–0.50
mm between the cutter blades and the flat
washers, and the flat washer beneath each
bolt head should turn freely.
CAUTION!
Operating the trimmer with worn or
improperly adjusted cutters will reduce
cutter performance and may also dam-
age your machine. Never operate the
machine with damaged or worn cutters.
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.
WARNING!
Before performing any mainte-
nance, 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!
Operating the engine with-
out a muffler, or with a muffler that is
damaged or improperly installed, can
increase engine noise sufficiently to
cause hearing loss.
Fasteners
Make sure nuts, bolts, and screws (except
carburetor adjusting screws) are tight.
Guide Bar
Cutter
Blades
Shoulder Bolt
Adjusting cutter blades
Cooling
fins
Remove all dirt and debris from the
engine and check the cooling fins
Locknut
Washer (should
turn freely)
Cooling
fins
Cooling
fins