Tensioning Instructions - Oregon CS250 Operator's Manual

MAINTENANCE AND CLEANINg
• Reattach the side cover, making sure the
chain catch is properly seated in its hole.
Lightly tighten the side cover knob (Fig.
26).
Fig. 26
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

• With the side cover knob only slightly
tightened, hold up the nose of the bar
and tighten the bar adjusting screw (Fig.
27).
Fig. 27
• Tighten the side cover knob securely.
26
ChAiNsAW MoDEl Cs 250
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. 28).
Fig. 28
During its early life use, run the
chainsaw, 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 c ally 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 chainsaw 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.
orEgoN® powerNow™
AF 0911 - F/N 547361