Replacing A Worn Guide Bar; Replacing A Worn Chain Tensioning Gear - Oregon PS750-091 Manuel D'instructions Original

• Place the chain tensioning gear on the side
of the guide bar facing you such that the
rectangular piece does not protrude past the
edges of the guide bar and replace the screw .
• Place the guide bar on the bar pad by
sliding the bar slot over the alignment
flange (Fig . 37), with the mounting stud
inserted through the slot in the guide bar .
FIG. 37
ALIGNMENT FLANGE
MOUNTING STUD
• Replace the saw chain as described in
"Replacing a Worn Saw Chain" .
• Tension the chain as described in "Tensioning
the Saw Chain" in the "Preparing for Use"
section of the 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 .
• Unplug the pole saw .
• Loosen the side cover release knob slightly,
but do not remove the side cover .
• Loosen the chain tensioning ring (turn it anti-
clockwise) as far as it will go .
• Loosen the side cover release knob and
remove the side cover .
• Remove the bar and chain .
Pole Saw Model PS750-091
Maintenance and Cleaning
• Remove and 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 as described in
"Maintaining the Guide Bar" .
• Replace the chain as described in "Replacing a
Worn Saw Chain" .
• Tension the chain as described in "Tensioning
the Saw Chain" .
BAR PAD
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 .
• Unplug the pole saw .
• Loosen the side cover release knob slightly,
but do not remove the side cover .
• Loosen the chain tensioning ring (turn it anti-
clockwise) 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 new chain tensioning gear on the
side of the guide bar facing you, and replace
the screw .
• Place the guide bar on the bar pad by sliding
the bar slot over the alignment flange as
described in "Maintaining the Guide Bar" .
• Replace the saw chain as described in
"Replacing a Worn Saw Chain" .
• Tension the chain as described in "Tensioning
the Saw Chain" in the "Preparing for Use"
section of the manual .
25