Maintenance; Service And Adjustments - McCulloch MT 260 CLS Operator's Manual

TRIMMING - Hold the bottom of the trimmer head about 3
inches (8 cm) above the ground and at an angle. Allow
only the top of the line to make contact. Do not force
trimmer line into work area.
Trimming
3 inches (8 cm)
above ground
SCALPING - The scalping technique removes unwanted
vegetation down to the ground. Hold the bottom of the
trimmer head about 3 inches (8 cm) above the ground
and at an angle. Allow the top of the line to strike the
ground around trees, posts, monuments, etc. This
technique increases line wear.
Scalping
MOWING - Your trimmer is ideal for mowing in places
conventional lawn mowers cannot reach. In the mowing
position, keep the line parallel to the ground. Avoid
pressing the head into the ground as this can scalp the
ground and damage the tool.
Mowing
SWEEPING - The fanning action of the rotating line can
be used for a quick and easy clean up. Keep the line
parallel to and above the surfaces being swept and move
the tool from side to side.
Sweeping

MAINTENANCE

WARNING: Disconnect the spark plug before
performing maintenance except for carburetor
adjustments.
HELPFUL TIP
IMPORTANT:
Have all
repairs other than the rec-
ommended maintenance
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, McCULLOCH may not pay for
repairs under warranty. It is your re-
sponsibility to maintain and perform
general maintenance.
CHECK FOR LOOSE FASTENERS AND PARTS
• Spark Plug Boot
• Air Filter
• Housing Screws
• Assist Handle Screw
• Debris shield
CHECK FOR DAMAGED OR WORN PARTS
Contact an authorized service dealer for replacement of
damaged or worn parts.
• ON/STOP Switch - Ensure ON/STOP switch functions
properly by pushing the switch. Make sure engine
stops. Wait 5 seconds before attempting to restart unit
to allow switch to reset. Restart engine and continue.
• Fuel Tank - Discontinue use of unit if fuel tank shows
signs of damage or leaks.
• Debris Shield - Discontinue use of unit if debris shield is
damaged.
• AIR FILTER
COUTION: NEVER operate trimmer without
the air filter. The air filter must be kept clean.
If it becomes damaged, install a new filter
To Clean Air Filter:
1. Remove knob (A) holding air filter cover in place,
remove cover (B) and lift filter (C) from air box (Fig. 7)
2. Wash filter in soap and water. DO NOT USE PETROL!
3. Air dry filter.
4. Reinstall filter.
NOTE: Replace filter if frayed, torn, damaged or unable to
be cleaned.
B
A
Fig. 7
7
GB
• FUEL CAP / FUEL FILTER
COUTION: Remove fuel from unit and store
in approved container before starting this
procedure. Open fuel cap slowly to release
any pressure which may have formed in fuel
tank.
1. Completely remove fuel cap (A) from fuel tank (B)
to be able to remove fuel filter (D) from tank. Use a
piece of wire (C) with a hook formed at the end to
pull filter out of tank. (Fig. 8A & Fig. 8B)
2. Pull filter (D) off with a twisting motion.
3. Replace fuel filter (D). (Fig. 8C)
NOTE: Never operate the trimmer without the fuel filter.
Internal engine damage could result!
A
Fig. 8A
D
Fig. 8C
• CARBURETOR ADJUSTMENT
The carburetor was pre-set at the factory for optimum per-
formance. If further adjustments are necessary, please
take your unit to the nearest professional Service Center.
• SPARK PLUG
1. Spark plug gap = .025" (.635mm) (Fig. 9).
2. Torque to 105 to 130 inch pounds (12 to 15 N•m).
Connect spark plug boot.
• DEBRIS SHIELD KNIFE SHARPENING
1. Remove cutter knife (E) from debris shield (F) (Fig.
10).
2. Place knife in a bench vise. Sharpen knife using a flat
file, being careful to maintain the angle of cutting
edge. File in one direction only.
C
Fig. 9
• STORING A UNIT
WARNING: Failure to follow these steps
may cause varnish to form in the carburetor
and difficult starting or permanent damage
following storage.
1. Perform all the general maintenance recommended
in the Maintenance Section of your User Manual.
2. Clean exterior of engine, Output Shaft, cutting
attachment guard and cutting head.
3. Drain fuel from the fuel tank.
4. After fuel is drained, start engine.
5. Run engine at idle until unit stops. This will purge the
carburetor of fuel.
6. Allow engine to cool (approx. 5 minutes).
7. Using a spark plug wrench, remove the spark plug.
8. Pour 1 teaspoon of clean 2-cycle oil into the
combustion chamber. Pull starter rope slowly several
times to coat internal components. Replace spark
C
plug.
9. Store unit in a cool, dry place away from any
sourceof ignition such as an oil burner, water heater,
etc.
• REMOVING A UNIT FROM STORAGE
B
1. Remove spark plug.
2. Pull starter rope briskly to clear excess oil from
Fig. 8B
combustion chamber.
3. Clean and gap spark plug or install a new spark
plugwith proper gap.
4. Prepare unit for operation.
5. Fill fuel tank with new, fresh fuel / oil mixture See
Fuel and Lubrication Section.

SERVICE AND ADJUSTMENTS

REPLACING THE LINE
1. Press the tabs on the side of the trimmer head and
remove cover and spool.
E
F
Fig. 10
8
GB