Poulan 545117550 instruction manual Check Chain Sharpness, BAR Maintenance, Lubrication

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.

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 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- 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 the bar tool.

7.Use the screwdriver end of the bar 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 turning the adjusting screw 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 pruner if the chain is loose. If the pruner is oper- ated with a loose chain, the chain could jump off the guide bar and result in serious injury.

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, with unit disconnected from power source, clean all sawdust from the guide bar and sprocket hole.

To maintain guide bar:

SDisconnect pruner from power source.

S Loosen and remove bar clamp nut and chain brake. Remove bar and chain from pruner.

S Clean the oil holes and bar groove after each 5 hours of operation.

Remove Sawdust From

Guide Bar Groove

Oil Holes

S Burring of guide bar rails is a normal process of rail wear. Remove these burrs with a flat file.

SWhen rail top is uneven, use a flat file to re- store square edges and sides.

File Rail Edges

and Sides

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

Bar Oil

Fill Cap

SSee GUIDE BAR AND CHAIN OIL under the OPERATION section.

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