Shindaiwa AHS242ef - Manual (Page 15)

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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 accumula-
■
tions of dirt or debris from the muf-
fler and fuel tank. Check cooling
air intake area at base of crank-
case. Remove all debris. Dirt
build-up in these areas can lead to
engine overheating, fire, or prema-
ture wear.
Daily Maintenance
WARNING!
Always wear gloves when working
around the cutter assembly.
Clean any debris or dirt from the-
■
hedge trimmer cutter blades.
Lubricate the blades before use
■
and after refueling. Check the
cutters for damage or incorrect
adjustment.
Check for loose or missing screws
■
or components. Make sure the cut-
ter attachment is securely fastened.
Check the entire machine for leak-
■
ing fuel or grease.
Make sure nuts, bolts, and screws
■
(except carburetor adjusting
screws) are tight.
Cutting performance of your machine de-
pends 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:
Loosen all blade locknuts at least 1.
one full turn.
Tighten each blade shoulder bolt
2.
firmly, and then loosen the shoulder
bolts 1/4 to 1/2 turn.
Locknut
Guide Bar
Cutter
Blades
Shoulder Bolt
Washer
(should turn
freely)
Adjusting cutter blades
Cutter blade adjustment
Working from the gearcase end, lock 3.
each bolt in place by firmly tighten-
ing its locknut while preventing the
shoulder 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 be-
neath each bolt head should turn freely.
WARNING!
The cutter blades are very sharp!
Always wear gloves when working
around the cutter assembly.
CAUTION!
Operating the trimmer with worn or
improperly adjusted cutters will reduce
cutter performance and may also
damage your machine. Never operate
the machine with damaged or worn
cutters.
Remove all dirt and debris from the
engine and check the cooling fins
Cooling
fins
Cooling
fins
Cooling
fins
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.
Maintenance (continued)