Poulan PP4620AV - Manual (Page 7)

7
Chain Brake
Chain Brake
Nuts
Bar Tool
Location of shipping spacer
3. Turn adjusting screw on bar counter-
clockwise to move the tensioning rack as
far as it will go toward the front of the bar.
Tensioning Rack
Adjusting
Screw
4. Slide the bar behind clutch drum until bar
stops against clutch drum sprocket.
Mount the bar
5. Prepare the chain by checking the proper
direction. Without following the illustration it
is easy to place the chain on the saw in the
wrong direction. Use the illustration of the
chain to determine the proper direction.
CUTTERS MUST FACE IN
DIIRECTION OF ROTATION
Tip of
Bar
Cutters Depth Gauge
Drive Links
6. Place the chain over and behind the
clutch, fitting the drive links in the clutch
drum sprocket.
Place chain onto the sprocket
7. Fit bottom of drive links between the
teeth in the sprocket in the nose of the
guide bar.
8. Fit chain drive links in to bar groove.
9. Pull the bar forward until the chain is
snug in the groove of the bar. Ensure all
drive links are in the bar groove.
10. Hold guide bar against the saw frame
and install the chain brake.
11. Replace the chain brake nuts and tighten
finger tight. Once the chain is ten-
sioned, you will need to tighten chain bra-
ke nuts.
CHAIN TENSION (Including units with
chain already installed)
NOTE: When adjusting chain tension,
make sure the chain brake nuts are finger
tight only. Attempting to tension the chain
when the chain brake nuts are tight can
cause damage.
Checking the tension:
Use the screwdriver end of the chain adjust-
ment tool (bar tool) to move the chain around
the bar. If the chain does not rotate, it is too
tight. If too loose, the chain will sag below the
bar.
Chain Brake Nuts
Chain Adjustment
Tool (Bar Tool)
Adjusting the tension:
Chain tension is very important. Chain
stretches during use. This is especially true
during the first few times you use your saw.
Always check chain tension each time
before you start the chain saw.
An adjusting screw (located on the guide
bar) is used to adjust the tension of the chain
(see illustration).
S
Loosen the chain brake nuts.
S Turn adjusting screw clockwise until chain
solidly contacts bottom of guide bar rail.
Adjusting
Screw
Guide bar
S Using the screwdriver end of the bar tool,
roll chain around guide bar to ensure all
links are in bar groove.