Partner Tech P842 - Manual (Page 8)

8
CHAIN TENSION (Including units
with chain already installed)
WARNING
: Wear protective gloves
when handling chain. The chain is sharp and
can cut you even when it is not moving.
NOTE: When adjusting chain tension,
make sure the bar knob is finger tight only.
Attempting to tension the chain when the bar
knob is tight can cause damage.
Checking the tension:
Use the screwdriver end of the chain adjust-
ment tool (bar tool) to move chain around
guide bar. If the chain does not rotate, it is too
tight. If the chain is too loose, it will sag below
the bar.
Bar Knob
Guide
Bar
Adjusting
Wheel
Chain Adjustment
Tool
(Bar Tool)
Adjusting the tension:
Chain tension is very important. Chains stretch
during use. This is especially true during the
first few times you use your saw. Always check
chain tension each time you use and refuel
your saw.
1. Lift lever on bar knob and turn counter-
clockwise 1 turn to loosen clutch cover.
LOOSEN
2. Turn adjusting wheel (downward direc-
tion) to tension chain until chain solidly
contacts bottom of guide bar rail. Lift tip
of guide bar while adjusting tension.
Tighten
chain
Adjusting Wheel
Loosen
chain
3. Using the screwdriver end of the chain
adjustment tool (bar tool), move chain
around guide bar to ensure all links are in
bar groove.
4. While lifting tip of guide bar, tighten bar
knob securely (clockwise). Hand tight-
en only!
TIGHTEN
Bar
Knob
5. Push lever on bar knob down to return le-
ver to closed/locked position.
WARNING
: Failure to push lever on
bar knob down to closed/locked position
could result in serious personal injury or
damage to your chain saw.
6. Use the screwdriver end of the chain ad-
justment tool (bar tool) to move chain
around guide bar.
7. If chain does not rotate, it is too tight.
Loosen bar knob 1 turn (counterclock-
wise); then, loosen chain by turning the
adjusting wheel 1 /
4
turn (upward direc-
tion). Retighten bar knob.
8. If chain is too loose, it will sag below the
guide bar. DO NOT operate the saw if the
chain is loose.
WARNING : If the saw is operated
with a loose chain, the chain could jump off
the guide bar and result in serious injury.
WARNING : Muffler is very hot during
and after use. Do not touch the muffler or al-
low combustible material such as dry grass
or fuel to do so.