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17
Chapter 4: Maintaining The DR
®
PRO-62V CHAINSAW
Regular maintenance is a good way to ensure the best performance and long life
of your Chainsaw. Please refer to this Chapter for maintenance intervals and
procedures.
Chain Tension
Check the Chain Tension before using the Saw when the Chain is cold. The
correct tension of a cold Chain is when there is no slack on the underside of the
Bar, the Chain is snug and you can turn it by hand without binding.
During normal Saw operation, the temperature of the Chain will increase. The
Drive Links of a correctly tensioned warm Chain will hang approximately .050 in.
(1.25mm) out of the Bar Groove (
Figure 23
). Be aware that a Chain tensioned
while warm, may be too tight upon cooling. Check the "cold tension" before
next use.
The Chain must be re-tensioned whenever the Flats on the Drive Links hang out
of the Bar groove.
Note:
A new Chain tends to stretch so check the Chain tension frequently and re-
tension as required.
1.
Loosen the Lock Knob by turning it counter clockwise to unlock the Bar and
Chain (
Figure 24
).
2.
Cold Chain: Remove all slack from the chain by turning the Tension Knob
clockwise until the Chain seats snugly against the Bar with the Drive Links
in the Bar groove.
Warm Chain: Remove all slack from the Chain by turning the Lock Knob
clockwise until the Chain is approximately .050 inches (1.25mm) from the
Bar with the Drive Links in the Bar groove.
Bar Maintenance
When the Bar shows signs of wear, turn it over so the top is on the bottom to
distribute the wear for maximum Bar life. Feathering or burring of the Bar Rails
is a normal process of Bar wear. You should smooth such faults with a Flat File
as soon as they occur.
Replace a Bar with any of the following faults:
•
Wear inside the Bar Rails permitting the Chain to layover sideways.
•
Bent Bar
•
Cracked or broken Rails
•
Spread Rails
Oil Port
If the Oil level does not seem to be going down, or the Chain and Bar gets hot
and is smoking, remove the Side Cover, Bar and Chain. Then check that the Oil
Port is clear of debris (
Figure 25
).Once cleaned, reinstall the Bar, Chain , Side
cover and follow the chain tensioning Procedure.
Figure 23
Properly Adjusted Warm Chain
Approximately .050 in. (1.25mm)
Chain
Needs Tensioning
Figure 24
Tension
Knob
Lock
Knob
Chain
•
Before performing any maintenance and to prevent injury, you must first
remove the Battery.
•
We recommend wearing Gloves when doing maintenance to avoid cuts.
Figure 25
Oil Port
