Daily Maintenance - Shindaiwa AHS242es Owner's/Operator's Manual

Maintenance (continued)
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.
Cutter blade adjustment
WARNING!
The cutter blades are very sharp!
Always wear gloves when working
around the cutter assembly.
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:
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 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.
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.
3. Working from the gearcase end, lock
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.
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.
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.
Guide Bar
Cutter
Blades
Shoulder Bolt
Adjusting cutter blades
Cooling
fins
251027
Cooling
fins
Remove all dirt and debris from the
engine and check the cooling fins
Locknut
Washer
(should turn
freely)
Cooling
fins
15