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CHECK CHAIN T ENSION
_
WARNING:
Wear protective
gloves
when handling
chain. The chain is sharp and
can cut you even when it is not moving.
Make
chain adjustments
with lower end supported.
Chain
tension
is very
important.
Chains
stretch during use. This is especially
true dur-
ing the first few times you use your pruner. AF
ways check chain tension
each time you use
and refuel your unit.
1.
Use a screwdriver
to move chain around
guide bar to ensure kinks do not exist. The
chain should rotate freely.
Chain Adjustment
Tool
Guide
Bar
2.
Loosen bar clamp nut until it is finger tight
against
the bar clamp.
Adjusting
Screw
Bar clamp nut
3.
Turn
adjusting
screw
clockwise
until
chain solidly contacts
bottom of guide bar
rail. Then, turn adjusting
screw
an addi-
tional 1/4 turn.
Adjusting
Screw
- 1/4 Turn
4.
Using
a screwdriver,
roll chain
around
guide
bar to ensure
all links are in bar
groove.
5.
Lift up tip of guide bar to check
for sag.
Release tip of guide bar, then turn adjust-
ing screw
1/4 turn clockwise.
Repeat until
sag does not exist.
6.
While
lifting tip of guide
bar, tighten bar
clamp nut securely
with a wrench.
7.
Use a screwdriver
to move chain around
guide bar.
8.
if chain
does
not rotate,
it is too tight.
Slightly
loosen bar clamp nut and loosen
chain by turning
the adjusting
screw
1/4
turn
counterclockwise.
Retighten
bar
clamp nut.
9.
if chain is too loose, it will sag below the
guide
bar and needs to be tightened
fol-
lowing above procedure.
ill
m_WARNING:
DO NOT
operate
the
pruner if the chain is loose. If the pruner is op-
erated
with a loose
chain, the chain could
iump off the guide bar and result h_serious in-
jury.
CHECK
CHAIN
SHARPNESS
A sharp chain makes wood chips. A dull chain
makes
a sawdust
powder
and cuts slowly,
See CHAIN
SHARPENING
in the SERVICE
AND ADJUSTMENTS
section,
BAR
MAINTENANCE
If your
pruner
cuts to one side,
has to be
forced through the cut, or been run with an im-
proper amount
of bar lubrication
it may be
necessary
to service your bar, A worn bar will
damage
your chain and make cutting difficult.
After each use, ensure
ON/OFF
switch
is in
the OFF position, then clean all sawdust
from
the guide bar and sprocket
hole.
To maintain
guide bar:
• Move ON/OFF
switch
to the OFF position
and disconnect
spark
plug (or disconnect
powerhead
from power source).
• Loosen
and remove
bar clamp
nut and
chain brake.
Remove
bar and chain from
pruner.
• Clean
the oil holes
and bar groove
after
each 5 hours of operation.
Remove
Sawdust
From
_I_
Guide Bar Groov__ _ _
Oii Holes
o
• Burring
of guide
bar
rails
is a normal
process
of rail wear, Remove
these burrs
with a flat file,
• When rail top is uneven,
use a flat file to re-
store square edges and sides.
_1"_
File Rail Edges_r]
[1
and Sides
I U I
Square
]
]
Worn Groove
Correct Groove
Replace guide bar when the groove
is worn,
the guide
bar is bent
or cracked,
or when
excess
heating or burring of the rails occurs. If
replacement
is necessary,
use only the guide
bar specified
for your
pruner
in the
repair
parts list.
LUBRICATION
Fill Cap
• See GUIDE
BAR AND CHAIN
OIL under
the OPERATION
section.
10
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