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FtGURE 25
_IDLE ADJUST SCREW
//'.,
ADJUST SCREW
_CONTROL'LEVER
CLAMP S(
FIGURE 26
HIGH SPEED STOP _4
CONTROL BRACKET
CONTROL CABLE
f II tt
v
FIGURE 27
CARBURETOR
NOTE: A DIRTY AIR CLEANER WILL CAUSE ENGINE
TO RUN ROUGH° BE SURE AIR CLEANER lS CLEAN
BEFORE ADJUSTING CARBURETOR. DO NOT MAKE
UNNECESSARY ADJUSTMENTS. FACTORY SETTINGS
ARE SATISFACTORY FOR MOST APPLICATIONS AND
CONDITIONS, IF ADJUSTMENTS ARE NEEDED, PRO-
CEED AS FOLLOWS:
1, Close Main Adjust Screw (Fig,, 25) by turning clockwise
(t'_). Close finger' tight only, Forcing may cause damage,
2, Open Main Adjust Screw (Fig,, 25) by turning 1 - 1/2 turns
counterclockwise (_'_),
3,, Close Idte Adjust Screw (Fig. 25} by turning clockwise
(f"_), Close finger tight ON LY,. Forcing may cause damage.,
4, Open Idle Adjust Screw by turning 1 - 1/4 turns counter-
c_ockwise(f'_),,
5, Start engine. Follow Starting Instructions, page 5o RIJn
engine a few minutes to warm it up_
6_ Place Throttle Control m FAST posrtlon:
a, Turn the Main Adjust Screw slowty clocJ_wise (/_) un-
til the engine starts to tose speed (lean mixture). (NOTE
THE POSITION OF THE SCREW SLOT AT THIS
POINT),
b. Turn the Main Adiust Screw slowly counterclockwise
(f'3,) until the engine starts to run rough. (NOTE THE
POSITtON OF THE SCREW SLOT AT THIS POINT),,
c= Adjust the Main Adjust Screw slowty between the set-
tings in steps a and b, until the engine runs smoothly,,
Allow several seconds between adjustments for engine to
adapt to new settings.
7,. Place Throttle Control in "IDLE" position:
a, Turn the Idle Adjust Screw slowly clockwise {t"_) un-
til the engine starts to lose speed. (NOTE THE POSI-
TION OF THE SCREW SLOT AT THIS POINT),.
b,. Turn the Idle Adjust Screw slowly counterclockwise
(F-_ } until the engine starts to run rough. (NOTE THE
POSITION OF THE SCREW SLOT AT THIS POINT),.
c. Turn the Idle Adjust Screw slowly between the set-
tings noted in steps a and b, until the engine runs
smoothly..
Allow several seconds between adjustments for engine to
adapt to new settings,,
8. Cheek that engine will accelerate to fuli speed without
hesitation If it will not, turn idle Adjust Screw 1/8 turn
counterclockwise (f-'x). Repeat if necessary,
NOTE: ALL CARBURETOR ADJUSTMENTS SHOULD BE
MADE WITH THE AIR CLEANER ON ENGINE,. BEST AD-
JUSTMENTS MADE WITH FUEL TANK AT LEAST 1/2
FULL
THR O't3=ILE C@ 't @tL
ADJUS? QE ?
To obtain satisfactory engine performance, the engine throttle
control must be adjusted properly. If it is necessary to check
the engine control adjustments, proceed as follows:
1. Set Throttle Control (Fig. 17) at "START" and keep it in
this position.
With Control in this position, Control Lever (Fig. 26}
should touch High Speed Stop. If it does, the controls are
adjusted correctly and no further adjustment should be
necessary..
If Control Lever does not touch High Speed Stop, proceed
to Step 2.
2. Loosen Clamp Screw just enough so the Throttle Control
Cable can be moved in Cable Clamp (do not remove Cable
Clamp from Control Bracket or disconnect Throttle Con-
trol Cable from Control Lever).
3.. Move Control Lever so it is touching High Speed Stop and
hold it in this position. With Control Lever in this position,
tighten Clamp Screw so that Cable Clamp will hold Throttle
Control Cable in place.,
4. Check that Engine stops when Throttle Control is moved
to "STOP _. If engine does not stop, loosen Clamp Screw
and readjust until engine stops_ Retighten Clamp Screw.
S PARK PLUG
1.. The spark Plug should be cilanged every 50 hours of opera.
tion or at the beginninq of every tilling season.
2.. Reset the gap at ,030" (Fig.. 27). Order the part number
listed in the Repair Parts Section of this Manual.
-10°
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