Replacing A Worn Chain Tensioning Gear; Replacing The Drive Sprocket - Oregon CS300 Manual De Instrucciones

MAINTENANCE AND CLEANING
REPLACING A WORN
CHAIN TENSIONING GEAR
Replace the chain tensioning gear if it
will not hold the bar and chain at proper
tension or if it is otherwise damaged .
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 .
• Place the new chain tensioning gear on
the side of the guide bar facing you 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 .
32
OREGON® Cordless Tool System
CHAIN SAW MODEL CS300
REPLACING THE
DRIVE SPROCKET
Replace the drive sprocket after every
two saw chain replacements or when the
sprocket is damaged .
Wear gloves and eye protection .
• 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 .
• Use a small flat screwdriver to pry open
and remove the e-clip, then remove the
washer and drive sprocket (Fig . 45) .
FIG. 45
• Insert the new drive sprocket and
washer, and install the new e-clip
(Fig . 46) .
FIG. 46
AA 1214 - F/N 573259