General Maintenance; Replacing The Bar And Chain - Victor Tools 10068 Instructions Manual

Failure to follow proper cutting procedures
can result in the bar and chain binding and
becoming pinched or trapped in the limb. If
this should happen:
• Stop the motor and disconnect from the
power supply.
• If the limb can be reached from the ground,
lift the limb while holding the saw. This
should release the "pinch" and free the
saw.
• If the saw is still trapped, call a professional
for assistance.
MAINTENANCE:
WARNING: When servicing, use only identical replacement parts. Use of any other parts
could create a hazard or cause product damage.
WARNING: Always wear eye protection and head protection. Failure to do so could result
in objects being thrown into your eyes and other possible serious injuries.
WARNING: Before inspecting, cleaning or servicing the unit, stop the motor, Wait for
all moving parts to stop, and disconnect from power supply. Failure to follow these
instructions can result in serious personal Injury or property damage.

GENERAL MAINTENANCE:

Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage
from various types of commercial solvents and may be damaged by their use. Use clean
cloths to remove dirt, dust, oil, grease, etc.
WARNING: Do not at any time let brake fluids, gasoline, petroleum-based products,
penetrating oils, etc., come in contact with plastic parts. Chemicals can damage, weaken,
or destroy plastic, which could result in serious personal injury.
CHAIN TENSION WARNING: To avoid possible
serious injury, never touch or adjust the chain
while the motor is running. The saw chain is
very sharp; always wear protective gloves when
performing maintenance to the chain.
• Stop the motor and disconnect from power
supply.
• Pull the front handle all the way back and
depress the lower jaw lock button. Keep the
button depressed while releasing the handle
to lock the lower jaw in the open position.
• Loosen the chain cover bolt to finger tight
using the combination wrench provided, then tum the chain tensioning screw clockwise
to tension the chain. Refer to replacing the bar and chain for additional information.
NOTE: A cold chain is correctly tensioned when there is no slack on the underside of the
guide bar, the chain is snug, but it can be turned by hand without binding.
• Chain must be re-tensioned whenever the
flats on the drive links hang out of the bar
groove as shown In fig.A.
• During normal operation, the temperature
of the chain will Increase. The drive links of
a correctly tensioned warm chain will hang
approximately .050in. out of the bar groove,
as shown in fig.B.
• Retighten the chain cover bolt securely.
• Return the lower jaw to the closed position by
pulling back on the front handle and allowing the handle to move all the way forward.
• NOTE: New chains tend to stretch; check chain tension frequently and tension as
required.
Chain Tensioning
Screw
Front Handle
Lower Jaw
Lock Button
Chain Cover Bolt
Lower Jaw
Flats
Fig. A
Fig. B
Aprox. .050in
• NOTICE: Chain tensioned while warm, can be too tight upon cooling. Check the "cold
tension" before next use.

REPLACING THE BAR AND CHAIN:

WARNING: To avoid possible serious injury,
stop the motor and disconnect from power
supply before replacing the bar, chain, or
performing any maintenance operation.
CAUTION: Always wear gloves when
handling the bar and chain; these
components are sharp and may contain
burrs.
• Pull the front handle all the way back and
depress the lower jaw lock button. Keep
the button depressed while releasing the
handle to lock the lower jaw in the open
position.
• Remove the chain cover bolt using the
combination wrench provided. Remove the
chain cover and set aside.
• Rotate the chain tensioning screw anti-
clockwise as needed to release the chain
tension.
• Remove the bar and chain from the
mounting surface.
• Remove the old chain from the bar.
• Lay out the new saw chain in a loop and
straighten any kinks.
• The cutters should face In the direction of
chain rotation. If they face backwards, turn
the loop over.
• Place the chain drive links into the bar
groove as shown.
NOTE: Make certain of direction of chain.
• Position the chain so there is a loop at the
back of the bar.
• While holding the chain in position on the
bar, reinsert the bar and chain through the
opening between the jaws and place the
loop around the sprocket.
• Fit the bar flush against the mounting
surface so that the bar stud is in the long
slot of the bar.
WARNING: When placing the bar on the
bar studs, ensure that the chain tensioning pin is in the chain tension pin hole. Failure to
properly place the chain tensioning pin in the chain tensioning pin hole could cause the
chain to come loose, resulting in serious personal injury.
• Remove all slack from the chain by turning the chain tensioning screw clockwise,
assuring that the chain seats into the bar groove during tensioning.
• Lift the tip of the bar up to check for sag. Release the tip of the bar, and turn the chain
tensioning screw / turn clockwise. Repeat this process until sag does not exist.
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2
• Chain is correctly tensioned when there is no slack on the underside of the bar, the
chain is snug, but it can be turned by hand without binding.
• Replace the chain cover. Reinstall the chain cover bolt and tighten securely.
NOTE: If the chain is too tight, it will not rotate. Loosen the chain cover bolt slightly and
turn chain tensioning screw / turn anti-clockwise. Lift the tip of the bar up and retighten
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4
bolt. Ensure that the chain will rotate without binding.
• Return the lower jaw to the closed position by pulling back on the front handle and
allowing the handle to move all the way forward.
Chain Cover
Bar
Chain
Chain Cover Bolt
Sprocket
Chain
Cover
Chain
Tensioning
Pin
Chain Tensioning
Pin Hole Bar Stud Slot Bar
Chain Drive Links
Bar Groove
Chain Rotation
Chain Tensioning
Screw
Chain
Sprocket