15
SERVICE AND ADJUSTMENTS
WARNING:
Disconnect unit from
power source before performing service or
making adjustments.
CHAIN SHARPENING
Chain sharpening is a complicated task that
requires special tools. We recommended you
refer chain sharpening to a professional chain
sharpener.
CHAIN REPLACEMENT
WARNING:
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 during the
first 15 minutes of operation. You should re-
check your chain tension frequently and adjust
the chain tension as required. See CHAIN TEN-
SION section.
Replace the old chain when it becomes worn or
damaged. Use only the Low-Kickback replace-
ment chain specified in the repair parts list.
TO REPLACE CHAIN:
1. Disconnect pruner from power source.
2. Remove bar clamp nut.
3. Remove bar clamp.
4. Turn adjusting screw by hand counter-
clockwise until adjusting pin just touches
the stop.
5. Slide guide bar behind sprocket until
guide bar stops against sprocket.
6. Remove the old chain.
7. Carefully remove new chain from pack-
age. Hold chain with the drive links as
shown.
CUTTERS MUST FACE IN
DIRECTION OF ROTATION
Tip of
Bar
Cutter
Drivelink
Cutters
Depth Gauge
Drive Links
8. Place chain over sprocket, fitting the drive
links in the sprocket.
9. Fit bottom of drive links between the teeth in
the sprocket in the nose of the guide bar.
10. Fit chain drive links into bar groove.
11. Pull guide bar forward until chain is snug
in guide bar groove. Ensure all drive links
are in the bar groove.
12. Now, install bar clamp making sure the
adjusting pin is positioned in the lower
hole in the guide bar.
Adjusting Pin
Lower
Hole
Guide Bar
13. Install bar clamp nut and finger tighten
only. Do not tighten any further at this
point. Proceed to the CHAIN ADJUST-
MENT section.
CHAIN ADJUSTMENT
See CHECK CHAIN TENSION in MAINTE-
NANCE section.
USER REPLACEABLE SERVICE PARTS
Assist Handle
530057546
Bolt Carriage, 1/4-20
530015786
Wing Nut
530016152
Bar
530044908
Chain
952051549
Hex Nut
530015917
Oil Cap
530053072
Bar Adjusting Screw/Pin Kit
530069110
Handlebar Accessory Kit
530071864
REPLACEMENT PART
PART NUMBER
