14
few times you use your pruner. Always check
chain tension each time you use your unit.
1. Use the screwdriver end of the chain ad-
justment tool (bar tool) 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.
Bar clamp nut
Adjusting Screw
3. Turn adjusting screw clockwise until
chainsolidly contacts bottom of guide bar
rail. Then, turn adjusting screw an addi-
tional 1/4 turn.
Adjusting Screw -- 1/4 Turn
4. Using bar tool, 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-
ingscrew 1/4 turnclockwis e. Repeat until
sag does not exist.
6. While lifting tip of guide bar, tighten bar
clamp nut securely with the bar tool.
7. Use the screwdriver end of thebar tool 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
turningthe adjusting s crew 1/4 turn counter-
clockwise. 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.
WARNING: DO NOT operate the
prunerif the c hain is loose. If the pruner is oper-
atedwith a loose c hain,t he chain could jump off
the guide bar and result in serious injury.
CHECK CHAIN SHARPNESS
Asharp chain mak es wood chips. A dull chain
makes a sawdust powder and cuts slowly.
See CHAIN SHARPENING in the SERVICE
AND ADJUSTMENTSsection.
BAR MAINTENANCE
If your pruner cuts to one side, has to be
forcedthrough the c ut, or been run with an im-
proper amount of bar lubrication it may be
necessary to service your bar. Aworn bar will
damageyour chain and make c uttingdiffic ult.
After eac h use, with unit disconnected from
power source, clean all sawdust from the
guide bar and sprocket hole.
Tomaintain guide bar:
SDisconnect pruner from power source.
SLoosen and remove bar clamp nut and
chain brake. Remove bar and chain from
pruner.
SClean the oil holes and bar groove after
each 5 hours of operation.
RemoveSawdust From
Guide Bar Groove
Oil Holes
SBurring of guide bar rails is a normal
process of rail wear. Remove these burrs
with a flat file.
SWhenrail top is unev en, use a flat file to re-
store square edges and sides.
CorrectGrooveWornG roove
File Rail Edges
andS ides
Square
Replace guide bar when the groove is worn,
the guide bar is bent or cracked, or when
excessheating or burr ing of the rails occurs . If
replacementis necessary,us e only the guide
bar specified for your pruner in the repair
parts list.
LUBRICATION
BarOil
Fill Cap
SSee GUIDE BAR AND CHAIN O IL under
the OPERATION section.