Starting A Warm Engine; Starting A Flooded Engine - McCulloch MAC 250 B Instruction Manual

Start throttle
button
Throttle
trigger
6. Pull starter rope handle sharply until en-
gine sounds as if it is trying to start, but do
not pull rope more than 6 times.
7. As soon as engine sounds as if it is trying to
start, move choke lever to HALF CHOKE.
8. Pull starter rope sharply until engine runs,
but no more than 6 pulls. If the engine
doesn't start after 6 pulls (at the HALF
CHOKE position), move the choke lever to
the FULL CHOKE position and press the
primer bulb 6 times. Pull the starter rope 2
more times. Move the choke lever to the
HALF CHOKE position and pull the starter
rope until the engine runs, but no more than
NOTE:
6 pulls. If engine still doesn't start,
it is probably flooded. Proceed to START-
ING A FLOODED ENGINE.
9. Once the engine starts, allow it to run 10
seconds, then move the choke lever to
RUN. Allow the unit to run for 30 more
seconds at RUN before releasing the
NOTE:
throttle trigger.
the choke lever in the RUN position, move
the choke lever to the HALF CHOKE
position and pull the rope until engine
runs, but no more than 6 pulls.

STARTING A WARM ENGINE

1. Move ON/STOP switch to the ON position.
2. Move the choke lever to the HALF
CHOKE position.
3. Set the throttle to the start position by acti-
vating the start throttle button (see step 5
under STARTING A COLD ENGINE).
4. Pull starter rope sharply until engine runs,
but no more than 5 pulls.
5. Allow engine to run 15 seconds, then move
the choke lever to the RUN position.
NOTE:
If engine has not started, pull starter
rope 5 more pulls. If engine still does not run, it
is probably flooded.

STARTING A FLOODED ENGINE

Flooded engines can be started by placing
the choke lever in the RUN position. Fully
squeeze throttle trigger; then, pull the rope to
clear the engine of excess fuel. This could re-
quire pulling the starter handle many times
depending on how badly the unit is flooded.
If the unit still doesn't start, refer to TROU-
BLESHOOTING TABLE.
OPERATING POSITION
ALWAYS WEAR:
Throttle
lock- -out
Heavy,
Long Pants
Cut from your left to your right.
When operating unit, clip shoulder harness
onto clamp, stand as shown and check for the
following:
S Wear eye protection and heavy clothing.
S Extend your left arm and hold handlebar
grip with your left hand.
S Hold throttle grip with your right hand with
finger on throttle trigger.
S Keep unit below waist level.
S Maintain full weight of tool on both shoulders.
S Without bending over, keep the blade or
trimmer head near and parallel to the ground
and not crowded into material being cut.
OPERATING INSTRUCTIONS FOR
USE WITH TRIMMER HEAD
If engine dies with
tion. Never lean over the trimmer head. Rocks
or debris can ricochet or be thrown into eyes
and face and cause blindness or other serious
injury.
Before trimming, bring engine to a speed suffi-
cient to cut material to be trimmed.
Do not run the engine at a higher speed than
necessary. The cutting line will cut efficiently
when the engine is run at less than full throttle.
At lower speeds, there is less engine noise and
vibration. The cutting line will last longer and will
be less likely to "weld" onto the spool.
Always release the throttle trigger and allow
the engine to return to idle speed when not
cutting.
To stop engine:
S Release the throttle trigger.
S Move the ON/STOP switch to the STOP
position.
TRIMMER LINE ADVANCE
Advance line by tapping the bottom of the cut-
ting head lightly on the ground while engine is
running at full speed. The metal line limiter
blade attached to the guard will cut the line to
the proper length.
line. Other sizes of line will not advance properly
and can cause serious injury. Do not use other
materials such as wire, string, rope, etc. Wire
can break off during cutting and become a dan-
gerous missile that can cause serious injury.
10
Safety Helmet
Hearing
Protection
Eye Protection
Boots
WARNING:
Always wear eye protec-
WARNING:
Use only 2,4 mm diameter