McCulloch MC4218AV Instruction Manual page 14

S Remove larger, supporting branches with
the cutting techniques described in BUCK-
ING WITHOUT A SUPPORT.
S Always use an overcut to cut small and free-
ly hanging limbs. Undercutting could cause
limbs to fall and pinch the saw.
PRUNING
WARNING:
Limit pruning to limbs
shoulder height or below.
branches are higher than your shoulder. Get a
professional to do the job.
S Make your first cut of the way through the
1/3
bottom of the limb.
WARNING:
Disconnect the spark
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.
HELPFUL TIP
IMPORTANT:
repairs other than the rec-
ommended
described in the instruction
manual performed by an
authorized service dealer.
If any dealer other than an authorized
service dealer performs work on the
product, we may not pay for repairs un-
der warranty. It is your responsibility to
maintain and perform general mainte-
nance.
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.
S Next make a 2nd cut all the way through
the limb. Then cut a third overcut leaving a
1 to 2 inch (2.5 to 5 cm) collar from the truck
of the tree.
Do not cut if
SERVICE
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 periodical-
ly to properly maintain your unit.
S Once a year, replace the spark plug, air filter,
and check guide bar and chain for wear. A
Have all
new spark plug and air filter assures proper
air-fuel mixture and helps your engine run
maintenance
better and last longer.
CHECK FOR DAMAGED OR
WORN PARTS
Contact an authorized service dealer for re-
placement of damaged or worn parts.
NOTE:
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.
S Oil Tank - - Do not use saw if oil tank shows
signs of damage or leaks.
CHECK FOR LOOSE
FASTENERS AND PARTS
S Bar 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.
14
Second cut
Third cut
Collar
First cut
Pruning technique
It is normal for a small amount of oil