Poulan 545146939 Check For Loose Fasteners And Parts, Check Chain Tension, Check Chain Sharpness

CHECK FOR LOOSE FASTENERS AND PARTS

SBar Clamp Nuts S Chain

S Bar Adjusting Screw

CHECK CHAIN TENSION

WARNING: Wear protective gloves when handling chain. The chain is sharp and can cut you even when it is not moving.

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 you use your saw.

1.Unplug unit from the power source.

2.Use a screwdriver to move chain around guide bar to ensure kinks do not exist. The chain should rotate freely.

NOTE: It is recommended that the saw be turned upside down for chain tensioning.

3.Loosen bar clamp nuts until they are finger tight against the bar clamp.

4.Turn the adjusting screw clockwise until the chain solidly contacts bottom of guide bar rail. Then, turn adjusting screw an additional 1/4 turn. This is correct chain tension setting.

Adjusting Screw -- 1/4 Turn

NOTE: To tighten the chain, turn the ad- justing screw clockwise; to loosen the chain, turn the adjusting screw counter- clockwise.

Adjusting Screw

5.Check the tension by lifting the chain from the guide bar. Remove some of the stiffness in the chain by pulling down and letting go of the chain sever- al times.

6.Continue turning the adjusting screw until the tension is correct (see step 4).

7.Tighten bar clamp nuts with a wrench.

8.Recheck chain tension.

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WARNING: If the saw is operated with a loose chain, the chain could jump off the guide bar and result in 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.

CHECK GUIDE BAR

Conditions which require guide bar main- tenance:

SSaw cuts to one side or at an angle. S Saw has to be forced through the cut. S Inadequate supply of oil to the bar and

chain.

Check the condition of the guide bar each time the chain is sharpened. A worn guide bar will damage the chain and make cut- ting difficult.

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

To maintain guide bar:

S Disconnect the chain saw from the power source.

S Loosen and remove bar clamp nuts. Remove bar and chain from saw.

S Clean the oil holes and bar groove af- ter 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 restore square edges and sides.

File Rail Edges

and Sides

Square

Worn Groove Correct Groove

Replace the guide bar when the groove is worn, the guide bar is bent or crack--ed, or when excess heating or burring of the rails occurs. If replacement is necessary, use only the guide bar specified for your saw in the repair parts list or on the decal located on the chain saw.