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SERVICE AND ADJUSTMENTS
CHAIN REPLACEMENT (Fig. 46, 47, 48 & 49
CAUTION: Wear protective gloves when
handling chain. The chain is sharp and
can cut you even when it is not moving.
It is normal for a new chain to stretch.
Because of this initial stretch during the
first 15-30 minutes of operation you
should recheck your chain tension fre-
quently and adjust the chain tension as
required. See chain tension section.
. Move orVstop switch to the "Stop" posilion.
• Replace the old chain when itbecomes wornor damaged.,
. Use only the Low-Kickback replacement chain specified in
the repair parts list or as specified on the replacement bar
and chain decal located on thechain saw
• See your Sears Service Center to replace and sharpen
individualcutters for matching your chain.
• Loosen and remove the 2 bar clamp nuts,,
o Remove bar clamp
• Remove the old chain,
= Turn adjusting screw by hand counterclockwise until adjusb
ingpin just touches the stop
• Slide guide bar behind clutch drum until guide bar stops
against the clutch drum sprocket.
,, Carefully remove new chain from package.Hold chain with
the drive links as shown in Figure 47
', Place chain over and behind theclutch.
• Fit bottom of drive links between teeth in sprocket nose.
= Fit chain drive links intotop of guide bar,Figure 47
Bar Clamp
€:"e",._---- Bar Clamp Nuts
Figure 46
Cutters Depth Gauge
Figure 47
• Pull guide bar forward until chain is snug in guide bar
grooves
• Now, install bar clamp making sure the adjusting pin is
positioned in the lower hole in the guide bar
Bar Guide
/ Lower Hole
Adjusting /-
, Pin /
Figure 48
- Install bar clamp nuts and finger tighten onlyo Do not
tighten any further at this point
Now proceed to the "Chain Adjustment" section.,
Bar Clamp Nuts
Figure 49
CHAIN ADJUSTMENT (Fig, 50, 51,52 & 53)
• Roll chain aroundguide bar to ensure kinks do not exist
(rotatesfreely).
: Assure bar clamp nuts are loosened (fingertight).
Turn adjusting screw clockwise until chain just barely
touches thebotlom of guide bar.,
• Roll chain around guide bar to ensure all links are in bar
groove,
FTSMRN.
Guide Bar
Bar Clamp Nuts \
Adjusting Screw
Figure 50
• Lift up tip of guide bar to check for sag, release tip of
guide bar, then turn adjusting screw 1/4 turn clockwise.
Repeat this step until a sag does not exist
° While lifting tip of guide bar, tighten bar clamp nuts with
the bar tool (provided).,Torque 10-15 fHbs
Adjusling Screw Guide Bar
114Turn
Bar Tool-----
Clamp
Nuts
Figure 51
To check chain tension:
• Use the screwdriver end of the bar too! to move chain
around the guide bar (Fig 53)
° If chain does not rotate, it is too tight - slightly loosen
bar clamp nuts and turn adjusting screw !/4 turn coun-
terclockwise. Retighten bar clamp nuts
o If chain is too loose, it will sag below the guide bar
(Figure 52),
Figure 52
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