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Ew.v
REPLACE AIR CLEANER ELEMENT
CARBURETOR ADJUSTMENT (FIGo 31)
Never attempt to change maximum engine speed, This is
preset at the factory and should only be changed by a quali-
fied service technician who has the necessary equipment. CAU-
TION: BEFORE ANY ENGINE ADJUSTMENT, MAKE
SURE AIR CLEANER tS CLEAN., SEE PAGE 16, Remove
Air Cleaner Assembly.,
1,, HIGH SPEED SETTING
a. With engine off, place Throttle Control in "FAST" posi-
tiono
b_ Loosen Clamp Screw., Adjust Throttle Cable untitl holes
"A" are aligned in Governor Control Plate and Slide
Plate.
co Tighten Clamp Screw.
2o HIGH SPEED MIXTURE
a, Turn High Speed Mixture Screw clockwise (f_) closing
finger tight ONLY, and then turn counterclockwise (I,"_)
1 - 1/2 turns (Fig. 31)o
NOTE: VALVES MAY BE DAMAGED BY TURNING
THEM TOO FAR°
b. Start Engine and altow to warm for five minutes_ Make
final adjustments with Engine running and Gear Shift
Lever in "NEUTRAL" position°
c, With Throttle Control Lever in "FAST" position, turn
Higt_ Speed Mixture Screw counterclockwise (t'_) un-
til engine runs "rough" then turn clockwise (t_)until
engine begins to miss. Turn Screw to a point midway
between these positions°
3, IDLE MIXTURE
ao With Throttle Control Lever in "SLOW" position, hold
Throttle Lever so that Idle Stop Screw is against Carbur-
etor, turn Idle Mixture Screw counterclockwise (_) un-
til engine runs "rough" and then turn clockwise (iql) un-
til engine begins to die_, Turn idle Mixture Screw to a
point midway between these positions,
4o IDLE SPEED SETTING
a,. With Throttle Control Lever in "SLOW" position, engine
should idle at 1750 RPM, If engine idles too slow, push
Throttle Control Lever above idle and turn Idle Speed
Screw one turn clockwise ((-_)_ Set Throttle Control
Lever at "SLOW" Repeat until satisfactory idle is at-
tained.
b. If engine idles too fast with Throttle Control Lever in
"SLOW" position, push Throttle Control Lever above
idle and turn Idle Speed Screw one turn counterclock-
wise (f"_), Set Throttle Control Lever at I'SLOW",, Re-
peat until satisfactory idle is attained,
IDLE
MIXTURE
IDLE SCREW
STOP
DO NOT
ADJUST
IDLE
MIXTURE
ADJUSTMENT
HIGH SPEED
MIXTURE SCREW
HOLES "A"
THROTTLE
CABLE,
IOLESPEED
SCREW
PLATE,
GOVERNOR
CONTROL
SLIDE
PLATE
FIGURE 31
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