Poulan SM4218AVX General Recommendations, Check for Damaged or Worn Parts, Check Chain Sharpness

MAINTENANCE SCHEDULE

Check:

Fuel mixture level . . . . Before each use Bar lubrication . . . . . . . Before each use Chain tension . . . . . . . Before each use Chain sharpness . . . . . Before each use For damaged parts . . . Before each use For loose caps . . . . . . Before each use For loose fasteners . . . Before each use For loose parts . . . . . . Before each use

Inspect and Clean:

Bar . . . . . . . . . . . . . . . . Before each use Complete saw . . . . . . . After each use Air filter . . . . . . . . . . . . . Every 5 hours* Chain brake . . . . . . . . . Every 5 hours* Spark arresting screen

and muffler . . . . . . . . . . Every 25 hours* Replace spark plug . Yearly Replace fuel filter . . . Yearly

*Hours of Operation --

Each hour of operation is approximately 2 tanks of fuel.

GENERAL RECOMMENDATIONS

The warranty on this unit does not cover items that have been subjected to operator abuse or negligence. To receive full value from the war- ranty, the operator must maintain unit as in- structed in this manual. Various adjustments will need to be made periodically to properly maintain your unit.

SOnce a year, replace the spark plug, air filter, and check guide bar and chain for wear. A new spark plug and air filter assures proper air-fuel mixture and helps your engine run better and last longer.

CHECK FOR DAMAGED OR WORN PARTS

Contact an authorized service dealer for re- placement of damaged or worn parts.

NOTE: It is normal for a small amount of oil to appear under the saw after engine stops. Do not confuse this with a leaking oil tank.

S ON/STOP Switch -- Ensure ON/STOP switch functions properly by moving the switch to the STOP position. Make sure en- gine stops; then restart engine and continue.

S Fuel Tank -- Do not use saw if fuel tank shows signs of damage or leaks.

SOil Tank -- Do not use saw if oil tank shows signs of damage or leaks.

CHECK FOR LOOSE

FASTENERS AND PARTS

SBar Nuts S Chain

S Muffler

S Cylinder Shield S Air Filter

S Handle Screws S Vibration Mounts S Starter Housing S Front Hand Guard

CHECK CHAIN SHARPNESS

A sharp chain makes wood chips. A dull chain makes a sawdust powder and cuts slowly. See CHAIN SHARPENING.

CHECK GUIDE BAR

Conditions which require guide bar mainte- nance:

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

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

After each use, ensure ON/STOP switch is in the STOP position, then clean all sawdust from the guide bar and sprocket hole.

To maintain guide bar:

SMove ON/STOP switch to STOP.

SLoosen and remove bar knob completely by

lifting lever and turning counterclockwise.

S Loosen chain tension by turning adjusting wheel (upward direction). Remove clutch cover.

SRemove bar and chain from saw.

SClean 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 ex- cess heating or burring of the rails occurs. If re- placement 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.

CHECK FUEL MIXTURE LEVEL

S See FUELING ENGINE under the OP- ERATION section.

LUBRICATION

Bar Oil

Fill Cap

SSee GUIDE BAR AND CHAIN OIL under the OPERATION section.

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