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High Speed Adjustment "H"
CAUTION: Do not operate engine at
full speed for prolonged periods while
making mixture adjustments as dam-
age to the engine can occur.
When making carburetor adjustments,
do not force plastic limiter caps beyond
stops or damage will occur.
• Support lower end of the unit so that
it is off the ground and will not make
contact with any objects. Be sure the
trimmer line is extended to maximum
length allowed by the line limiter.
• Start the engine and allow to idle.
• Squeeze the throttle trigger fully.
• Keep unit running at full speed; turn
screw "H" very slowly clockwise until
the speed begins to slow down.
• Do not let go of the throttle trigger,
and turn screw counterclockwise un-
til the engine begins to run roughly.
• Still holding the throttle trigger, turn
the screw slowly a small amount until
the engine begins to run smoothly.
• Check the acceleration by following
the steps outlined under ACCELERA-
TION CHECK. The trimmer head must
not turn at idle speed.
Acceleration Check
• Allow engine to idle. Be sure trimmer
line is extended to the maximum
length allowed by the line limiter.
• Squeeze trigger fully: If the engine
does not accelerate smoothly, turn
screw "L" counterclockwise a small
amount (no more than the width of
the slot in the adjusting screw). Do
not attempt to adjust screws beyond
the stops as damage can occur.
• Repeat above steps until smooth ac-
celeration is obtained. Do not at-
tempt to adjust the screw beyond the
stops as damage can occur.
IGNITION TIMING
Ignition timing is fixed, non-adjustable.
Prepare unit for storage at end of sea-
son or if it will not be used for 30 days
or more.
WARNING:
• Allow engine to cool, and secure the
unit before storing or transporting.
• Store unit and fuel in a well venti-
lated area where fuel vapors cannot
reach sparks or open flames from
water heaters, electric motors or
switches, furnaces, etc.
• Store unit with all guards in place.
Position unit so that any sharp object
cannot accidentally cause injury.
• Store unit and fuel well out of the
reach of children.
EXTERNAL SURFACES
If your unit is to be stored for a period
of time, clean it thoroughly before stor-
age. Store in a clean dry area.
• Lightly oil external metal surfaces.
FUEL SYSTEM
Under Fueling Engine in the Operating
Section of this manual, see message
labeled IMPORTANT regarding the use
of gasohol in your engine.
Fuel stabilizer is an acceptable alter-
native in minimizing the formation of
fuel gum deposits during storage. Add
stabilizer to the gasoline in the fuel
tank or fuel storage container. Follow
the mix instructions found on stabilizer
container. Run engine at least 5 min-
utes after adding stabilizer.
CRAFTSMAN 40:1,2-cycle engine oil (air
cooled) is already blended with fuel sta-
bilizer. If you do not use this oil, you can
add fuel stabilizer to your fuel tank.
ENGINE
• Remove spark plug and pour I tea-
spoon of 40:1,2-cycle engine oil (air
cooled) through the spark plug open-
ing. Slowly pull the starter rope 8 to
10 times to distribute oil.
• Replace spark plug with new one of
recommended type and heat range.
• Clean air filter.
• Check entire unit for loose screws,
nuts, and bolts. Replace any dam-
aged, broken, or worn parts.
• At the beginning of the next season,
use only fresh fuel having the proper
gasoline to oil ratio.
OTHER
• Do not store gasoline from one sea-
son to another.
• Replace your gasoline can if it starts
to rust.
17
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