Maintenance - Poulan Pro SM4218 AV Instruction Manual

PRUNING
WARNING:
Limit pruning to limbs
shoulder height or below. Do not cut if
branches are higher than your shoulder Get a
professional to do the job.
• Make your first cut t/3 of the way through tbe
bottom of the Iimb.
• Next make a 2nd cut all the way through
the limb, Then cut a third overcut Ieaving a
1 to 2 inch (2.5 to 5 cm) co}lar from the truck
of the tree.
i _,} ,#_" 7.€,r
• I Second cut /,/J_
Third cit///
/ Pruning technique
_IbWARNING: Disconnect thespark
plug before performing maintenance except
for carburetor adjustments.
We recommend all service and adjustments
not listed in this manual be performed by an
authorized or Master Service Dealer.
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 Operat{on -
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 warranty the operator must main-
tain unit as instructed in this manual Various
adjustments will need to be made periodicaI-
ly to properly maintain your unit.
• Once a year, replace the spark plug, air filter,
and check guide bar and chain for wear A
new spark #ug and air filter assures proper
air-fuel mixture and betps your engine run
better and last Ionger.
CHECK FOR DAMAGED OR
WORN PARTS
Contact an authorized service dealer for re-
placement of damaged or worn parts.
NOTE: g is normal for a smal_ amount of oil
to appear under the saw after engine stops.
Do not confuse this with a leaking oil tank.
• ON/STOP Sw_toh - Ensure ON/STOP
sw_ch functions properly by moving the
switch to the STOP position Make sure en-
gine stops; then restart engine and con_nue
• Fuel Tank - Do not use saw _ fuel tank
shows signs of damage or leaks.
• OiITank- Donotusesawifoiltankshows
signs of damage or leaks.
CHECK FOR LOOSE
FASTENERS AND PARTS
Bar Nuts
Chain
Muffler
Cylinder Shield
Air Filter
Handle Screws
Vibration Mounts
Starter Housing
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:
• Saw cuts to one side or at an angle
• Saw has to be forced through the cut.
• Inadequate supply of oil to bar/chain.
Check the condition of guide bar each time
chain is sharpened A worn guide bar wiII
damage the chain and make cutting difficuIt.
After each use, ensure ON/STOP switch is
in the STOP position, then clean alI sawdust
from the guide bar and sprocket hole.
To maintain guide bar:
• Move ON/STOP switch to STOP.
• Loosen and remove bar nuts and clutch
cover. Remove bar and chain from saw.
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