Shindaiwa AHS243S-LW Operator's Manual page 28

Maintenance and care
Cleaning silencer
Care for cutting blades
Wear gloves to protect hands from sharp blades.
Failure to observe these precautions could lead to injury.
1. Bolt slots
1. Locknut
2. Bolt
CAUTION
3. Loosen 1/4 - 1/2 turn
4. Washer
Never operate the unit with a damage or missing silenc-
er or spark arrester. Operating with a missing or dam-
aged spark arrester is a fire hazard, and could also
damage your hearing.
Carbon deposits in silencer will cause a drop in engine output
and overheating. Spark arrestor screen must be checked pe-
riodically. Clean deposits from silencer.
IMPORTANT
Do not remove the silencer cover. If necessary, Please consult
your dealer.
Lubricating blades (Every 4 hours of operation)
Apply a few drops of oil the each bolt slots at the bottom of
blades.
Cleaning blades (After each use)
Remove gummy residue from blades with a 50 : 50 mixture of
kerosene (paraffin) and machine oil.
Adjusting gap between blades (As needed)
Loosen the locknuts 1/2 turn with T-wrench.
Tighten the blade bolts until snug with 10 mm open end wrench.
Loosen the bolts 1/4 - 1/2 turn.
Hold the bolts from turning and tighten the locknuts.
When bolt adjustment is correct, 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.
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WARNING