Maintaining The Guide Bar; Replacing A Worn Guide Bar - Oregon CS300 Original Instruction Manual

OREGON® Cordless Tool System
CHAIN SAW MODEL CS300

MAINTAINING THE GUIDE BAR

WARNING: THE EDGES OF A
WORN GUIDE BAR, PARTICULARLY
THE EDGES OF THE GROOVE WHERE
THE CHAIN TOUCHES THE BAR,
CAN BE EXTREMELY SHARP. USE
APPROPRIATE HAND PROTECTION.
CAUTION: THE GUIDE BAR CAN BE
HOT AFTER CUTTING. WEAR GLOVES TO
AVOID BURNS.
To even bar wear and maximize bar life,
flip the bar occasionally .
Wear gloves .
• Remove the battery .
• Loosen the side cover release knob
slightly, but do not remove the side
cover .
• Loosen the chain tensioning ring (turn it
counterclockwise) as far as it will go .
• Loosen the side cover release knob and
remove the side cover .
• Remove the bar and chain and inspect
for damage and wear .
• Remove the screw from the back side of
the chain tensioning gear and remove
the chain tensioning gear from the
guide bar (Fig . 43) .
FIG. 43
• Flip the bar (Fig . 44) .
FIG. 44
AA 1214 - F/N 573259
MAINTENANCE AND CLEANING
• Replace the guide bar and saw chain .
See "Assembling the Guide Bar and Saw
Chain" section in this manual .
• Tension the chain as described in
"Tensioning the Saw Chain" in the
"Unpacking and Assembly" section of
this manual .

REPLACING A WORN GUIDE BAR

WARNING: THE EDGES OF A
WORN GUIDE BAR, PARTICULARLY
THE EDGES OF THE GROOVE WHERE
THE CHAIN TOUCHES THE BAR,
CAN BE EXTREMELY SHARP. USE
APPROPRIATE HAND PROTECTION.
When the guide bar becomes cracked
or has excessive wear around the edges,
particularly in the groove where the
saw chain touches the bar, it must be
replaced . Also, if the nose sprocket is
worn, has teeth missing or does not turn
smoothly, the bar must be replaced .
Wear gloves .
• Remove the battery .
• Loosen the side cover release knob
slightly, but do not remove the side
cover .
• Loosen the chain tensioning ring (turn it
counterclockwise) as far as it will go .
• Loosen the side cover release knob and
remove the side cover .
• Remove the bar and chain .
• Remove the screw from the back side of
the chain tensioning gear and remove
the chain tensioning gear from the
guide bar as described in "Maintaining
the Guide Bar" .
• Place the chain tensioning gear on the
new guide bar and replace the screw .
• Replace the guide bar and saw chain .
See "Assembling the Guide Bar and Saw
Chain" section in this manual .
• Tension the chain as described in
"Tensioning the Saw Chain" in the
"Unpacking and Assembly" section of
this manual .
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