17
SPROCKET
• A damaged sprocket (J) will cause premature damage
or wear of saw chain.
- When the sprocket has worn out 0.5mm (.020”) or
more, replace it.
• Check sprocket when you install new chain. Replace it
if worn.
• Clean sprocket, clutch, and bar mount area before
installation of bar.
IMPORTANT
Some tree sap and resins are corrosive. Thoroughly
wash the guide bar and sprocket areas after each use,
then coat metal parts with light oil.
SPARK PLUG
• Check periodically
• Gap = 0.65mm (.026 in.)
• Replace if either electrode is worn, or if the insulator
is fouled by oil or other deposits.
• Torque = 145 – 155 kg*cm (125 – 135 in. lb.)
IMPORTANT
Do not over-torque.
COOLING SYSTEM CLEANING
• Remove spark plug lead.
• Remove two (2) muffler cover screws and muffler
cover (A).
• Remove four (4) recoil starter housing screws and
starter housing (B).
• Use a stiff bristle cleaning brush (do not us a metal
brush) to remove dirt from cylinder fins in muffler and
ignition coil areas.
I
J
B
A
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