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SERVICE AND ADJUSTMENTS
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LOW SPEED
MIXTURE
ADJUSTMENT
• Allow the engine to idle.
• Turn the low speed adjustment slowly clockwise until
the speed increases. Do not attempt to turn beyond the
stops as damage can occur.
• Turn the low speed adjustment counterclockwise
until
the speed decreases. Do not attempt to turn beyond
the stops as damage can occur.
• Set the low speed adjustment at the midpoint between
the two positions.
• Readjust the idle speed (see "Idle speed adjustment").
HIGH SPEED MIXTURE ADJUSTMENT
CAUTION: Do not operate the engine at
full throttle for prolonged periods while
making high speed adjustments as dam-
age to the engine can occur.
NOTE: Adjust the high speed adjustment 1/16 of a turn
at a time. A turn of 1/16 inch is about the width of the
screwdriver slot in the top of the adjustment.
• Allow the engine to idle, then squeeze the throttle fully.
NOTE: Perform the following steps at ful! throttle.
• Turn the high speed adjustment'counterclockwise
until
it stops. Do not attempt to turn beyond the stops as
damage can occur.
• Turn the adjustment the minimum amount clockwise
until the engine runs smoothly. Do not attempt to turn
the beyond the stops as damage can occur.
• If the engine accelerates and runs smoothly, no further
adjustments are necessary.
• Recheck and follow steps in "Acceleration check."
CAUTION: If the engine does not operate
according
to these
instructions
after
repeating the adjusting steps, do not use
the tool.Take it to your authorized service
dealer.
ACCELERATION
CHECK
•AItow the engine to idle,
• Squeeze the throttle trigger iuIly. If the engine does
not accelerate smoothly, turn the low speed adjust-
ment counterclockwise
a small amount (no more than
the width of the slot in the adjusting screw).
• Repeat previous
step until smooth acceleration
is
obtained. Do not attempt to turn beyond the stops as
damage can occur.
NOTE: It may be necessary to repeat "Idle speed adjust-
ment" through "Acceleration
check" to obtain correct
adjustments.
CLEAN/REPLACE
FUEL FILTER (Fig. 18 & 19)
• Run fuel tank dry of fuel before proceeding
with this
step.
• Remove fuel cap and allow it to hang to side of motor.
• Using a small pair of needle nose pliers, grasp fuel cap
retainer, holding it in tank opening and pull out.
• With cap out of tank, use a small section of bent wire
similar to that shown in the illustration to catch fuel line
and slowly pull from tank. When fuel filter appears in
opening, grasp with fingers and remove from tank.
• Once filter is out of tank, hotd fuel line close to fuel fit=
ter. Remove fuel filter by twisting and pulling at the
same time.
• To clean fue! filter, submerge in warm soapy water for
10 minutes. (We recommend
a very light mixture of
dish washing liquid.) Then agitate until filter is clean,
rinse thoroughly in warm water, air dry.
• Reverse process for installation.
• To replace fuel filter, use same procedure, but install
new filter.
FUEL CAP
Figure 18
BENTWIRE
FUELUNE
FUELLINE
FUEL FILTER
FUEL-
FILTER
FILTER ,'_
BARREL
NECK
Figure 19
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