BAR MAINTENANCE
CHAIN SHARPENING
If your saw cuts to oneside, has to beforced
throughthecut,or beenrunwithanimproper
amount of bar lubrication it may be neces-
sary to service your bar.
Chain sharpening is a complicated task that
requires special tools. We recommend that
you refer chain sharpening to a professional
chain sharpener.
A wornbar willdamageyour chainandmake
cutting difficult.
CARBURETOR ADJUSTMENTS
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:
WARNING
:
The chain will be moving
during most of this procedure. Wear your pro-
tective equipment and observe all safety pre-
cautions. The chain must not move at idle
speed.
S Move ON/STOP switch to the STOP posi-
tion.
The carburetor has been carefully set at the
factory. Adjustments may be necessary if
you notice any of the following conditions:
S Chain moves at idle. See IDLE SPEED--T
adjusting procedure.
S Loosen and remove chain brake nuts and
chain brake. Remove bar and chain from
saw.
S Cleantheoilholes andbargrooveaftereach
5
hours of operation.
S Saw will not idle. See IDLE SPEED--T ad-
justing procedure.
Idle Speed---T
Remove Sawdust From
Guide Bar Groove
Allow engine to idle. If the chain moves, idle
istoofast. Iftheenginestalls,idleis tooslow.
Adjust speed until engine runs without chain
movement (idle too fast) or stalling (idle too
slow). Theidle speedscrew is located inthe
area above the primer bulb and is labeled T.
S Turn idle speed screw (T) clockwise to in-
crease engine speed.
Oil Holes
S Burring of guide bar rails is a normal
process of rail wear. Remove these burrs
with a flat file.
S Turn idle speed screw (T) counterclock-
S Whenrailtopis uneven,useaflatfiletore-
wise to decrease engine speed.
STORAGE
store square edges and sides.
File Rail Edges
and Sides
Square
WARNING
: Stop engineand allow to
cool, and secure the unit before storing or
transporting in a vehicle. Store unit and fuel
in an area where fuel vapors cannot reach
sparks or open flames from water heaters,
electric motors or switches, furnaces, etc.
Storeunitwithallguards inplace.Positionso
that any sharp object cannot accidentally
cause injury to passersby. Store the unit out
of reach of children.
S Before storing, drain all fuel from the unit.
Start engine and allow to run until it stops.
S Clean the unit before storing. Pay particu-
lar attention to the air intake area, keeping
it free of debris. Use a mild detergent and
sponge to clean the plastic surfaces.
S Donotstoretheunitorfuelinaclosedarea
where fuel vapors can reach sparks or an
openflamefromhotwater heaters,electric
motors or switches, furnaces, etc.
S Store in a dry area out of the reach of chil-
dren.
S Ensure the machine is cleaned and that a
complete service is carried out before
long--term storage.
S The guide bar and chain must always be
covered with a scabbard when the machine
is being transported or in storage in order to
prevent accident contact with the sharp
chain. Even a non--moving chain can cause
serious cuts to yourself or persons you
bump into with an exposed chain.
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 ofthe rails occurs.
Ifreplacementis necessary,useonly theguide
bar specifiedfor your saw intherepair parts list
or on the decal located on the chain saw.
SPARK PLUG
The spark plug should be replaced each
year to ensure the engine starts easier and
runs better. Ignition timing is fixed and non-
adjustable.
1.
2.
3.
4.
Loosen 3 screws on cylinder cover.
Remove the cylinder cover.
Pull off the spark plug boot.
Remove spark plug from cylinder and
discard.
5.
Replace with Champion RCJ--7Y spark
plug and tighten securely with a 19 mm
socket wrench. Spark plug gap should
be 0,5 mm.
6.
7.
Reinstall the spark plug boot.
Reinstall
the
cylinder
cover
and
3
screws. Tighten securely.
Screws
Cylinder
Cover
Spark
Plug Boot
Spark
Plug
13
| Categories | Chainsaw Manuals, McCulloch Chainsaw Manuals |
|---|---|
| Tags | Mac 3-14XT, Mac 4-18XT, Mac 4-20XT, McCulloch 3-14XT, McCulloch 4-18XT, McCulloch 4-20XT |
| Model Year | 2009, 2010 |
| Download File |
|
| Language | English |
| Product Brand | McCulloch. Support Phone for US: Wheeled (Mowers, Tractors, Tillers, Snow Throwers) - 1-800-849-1297
McCulloch Handheld (Chainsaws, Trimmers, Blowers, Edgers) - 1-800-554-6723 All McCulloch Products - 1-800-521-8559, Chainsaw |
| Document File Type | |
| Publisher | mcculloch.com |
| Wikipedia's Page | McCulloch Motors |
| Copyright | Attribution Non-commercial |
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