19
A
B
C
GUIDE BARS AND OIL HOLES
• Follow instructions for “Guide Bar and Saw Chain – Install/Re-
move”.
• Clean after each use
-Clean the grooves (A) of the guide bar with a small screw-
driver.
-Clean oil holes (B) with a wire.
NOTE: Symmetrical shaped Guide Bars should be inverted
each time the chain is removed to extend guide bar life.
SPROCKET
• A damaged sprocket (C) will cause premature damage or wear
of saw chain.
• Clean sprocket, clutch and bar mount area before installation
of bar.
• Check sprocket when you install new chain. When outer diameter
of sprocket is worn 0.5mm (.020”) or more, replace it.
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.
Worn : 0.5 mm
C
SPARK PLUG
• Check periodically.
IMPORTANT
Use only NGK BPM-8Y spark plug (BPMR-8Y in Canada)
otherwise severe engine damage may occur.
1. Remove air cleaner cover.
2. Remove spark plug lead and spark plug.
3. Gap = 0.65 mm (0.026 in)
4. Replace if electrode is worn, or if the insulator is fouled by oil
or other deposits
5. Torque = 150 – 170 kgf • cm (130 – 150 in • lbf)
IMPORTANT
Do not over-torque
COOLING SYSTEM CLEANING
NOTE
See “Guide Bar and Saw Chain-Install/Remove Instructions
for sprocket guard removal/replacement instructions.
Mufer Side
1. Remove air lter cover and remove spark plug lead.
2. Remove two guide bar nuts and remove sprocket guard.
3. Remove three mufer cover screws and remove mufer
cover.
4. Using a stiff bristle cleaning brush (do not use a metal
brush), remove debris from cylinder ns in mufer area.
5. Assemble components in reverse order
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