25
OREGON® CORDLESS TOOL SYSTEM
CHAIN SAW MODEL CS250
MAINTENANCE AND CLEANING
AF 0513 F/N 547361
• Reattach the side cover, making sure
the chain catch is properly seated in its
hole. Lightly tighten the side cover
knob (Fig. ).
IMPORTANT: THE SAW CHAIN
MUST BE PROPERLY TENSIONED
BEFORE USING. SEE TENSIONING
INSTRUCTIONS BELOW.
* To even bar wear and maximize bar
life, invert the bar occasionally.
TENSIONING INSTRUCTIONS
• Wear gloves. Remove the battery before
tensioning. Loosen the side cover knob,
hold up the nose of the bar, and tighten
the chain tensioning screw (Fig. ).
• Tighten the side cover knob securely.
Chain tension is correct when, with some
effort, with a gloved hand you are able to
pull the chain smoothly around the bar.
The chain should touch the underside of
the bar rail (Fig. ).
During its early life use, run the chain saw,
not cutting for a minute or two, making
sure the chain is getting a good supply of
oil. Stop the motor and check the chain
tension. If it has loosened, readjust.
After a short period of use, allow the
chain to cool and once again recheck the
tension (remove the battery first). Watch
tension carefully for the first half-hour
of use and periodi cally throughout the
life of the chain, readjusting as required
when the chain and bar are cool to the
touch. Never tighten chain when it is hot.
Lubricate the chain properly with
OREGON® brand bar and chain oil. It has
been specially formulated to maximize
power and reduce friction. Make certain
the chain is getting an adequate supply
of oil. Oil should be thrown from the nose
of the bar when the chain saw is running,
but not in the cut.
Saw chain will stretch as a result of
normal use, but insufficient oil, aggressive
use, or failure to perform recommended
maintenance can lead to premature
stretching.
FIG. 28
FIG. 29
FIG. 30
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