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SERVICE AND ADJUSTMENTS
TO CHECK OPERATION OF CHOKE
CONTROLS:
Move speed control lever to "choke"
position. The carburetor choke should be
dosed.
WAS_n
BELL CRANK
FIGURE
18
4_
U
CASING
t '_
CHOKE
TO ADJUST CHOKE CONTROLS:
Place speed control lever on equipment in
"FAST' (high speed) position. Loosen
control casing clamp screw (B) on control
plate. Move control casing (A) and wire
forward or backward until washer (C) just
touches the choke operating bell crank (D).
]]ghten casing clamp screw (B) on control
plate. REcheck operation of controls after
adjustment. Move control lever to "STOP"
position. Lever must make good contact
wen step switch if so equipped. (Refer to
Fig. 18). Reefer to engine manual for
detailed instructions.
ReplaceAir Cleaner
IDLE SPEED
TH RO]q'LE
STOP
ADJUSTING
SCREW
THROTTLE
NEEDLE VALVE
CARBURETOR
ADJUSTMENT
FIGURE
19
FINAL ADJUSTMENT:
Place throttle control in "FAST' posi_on.
Turn needle valve in until engine slows
(clockwise-lean mixture). Then rum it out
pest smooth operating point until engine
runs unevenly (rich mixture). Now tum
needle valve to the midpoint between rich
and lean so theengine runs smoothly.Next,
adjust
idle
RPM.
Rotate
throttle
counterclockwise and hold against step
while adjusting idle speed adjusting screw
to obtain 1750 RPM. Release throttle.
Engine should acceleratewithout hesitation
or sputtering. If it does not, carburetor
should be readjusted, usually to a slightly
richermixture.
CLUTCH BELT MAINTENANCE:
1. Insbectclutch beitfrequentJyforwear
and demaga. Wom and damaged
belts can cause the dutch to operate
improperly,such as con_nuous
movement of the reel and roller drive
when all levers are dL%=ngaged.
Replace the belt when excessive wear
or damage occurs.
7.
Replace daadman dutch spring.
(Attachto belt idler).
8. Replace belt guard and belt guard belt.
Do not tighten bolt.
9.
Replace clutchcontrol rod making sure
red is paced outside of the belt.
10. Replace cotter pin and check for
proper tension by following instructions
on page 4 under heading "Engine
Clutch Red Tension Adjustmenf'
11. Now check dutch belt guard for proper
adjustment.Thare must be 1/16"
clearance between the top of the belt
and the bottomof the belt guard. Adjust
guard up or down to maintain the 1/16"
clearance.
NOTE: The dearance must be checked
and adjustment made when the dutch is
engaged and there is tension on the belt.
(Lift clutch lever to the handle to engage
dutch and put tension on the belt).
12. Whenthe 1/16"dearance isachieved,
tighten belt guard firmly.
IMPORTANT:
IMPROPER
ADJUSTMENT
OF
BELT GUARD
AND TENSION
OF
CLUTCH
CONTROL
ROD
CAN
CAUSE
PREMATURE
WEAR
OF
THE
BELT
AND
FAILURE
OF
PROPER CLUTCH ACTION.
Clip fer throttlecable should secure cable to
handle.
CARBURETOR ADJUSTMENTS
Minor carburetor adjustment may be
required to compensate for differences in
fuel, temperature, altitude or load. Air
cleaner and air cleaner cover must be
assembled to carburetor when running
engine.
INmAL ADJUSTMENT:
Gently tum needle valve clockwise until it
just doses. Valve may be damaged by
tuming it in tee far. (Refer to Fig. 19).
Next open needle valve 1-1/2 turns
counterclockwise.This initialadjustment will
permit the engine to be started and
warmed up (approximately 5 minutes) prior
to final adjustment.
CLUTCH BELT REPLACEMENT:
1. Remove cotterpinfrom lowerdutch
control rod (Part 1012D) and slide
control rod from dutch bearing (Part
1046D).
2.
Remove belt guard bolt using 1/Z'
wrench and remove belt guard from
the clutch body.
3. Detach Deadman clutch spring (Part
1052D) from deadman belt idler (Part
1047D).
4. Remove the worn belt.
5. Install new belt by placing around
jackshaft pulley (Part 1053) first and
then around the engine pulley (part
I063).
6. CAUTION: Make sure idler bearing
(part I048D) rests againstthe inside of
the belt. O'ha belt must be placed over
the pulleys and the idler bearing).
11
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