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WALK-BEHIND TROWELS — HANDLE INSTALLATION INSTRUCTIONS P/N 20485 — REV. #4 (09/18/14) — PAGE 4

THROTTLE CABLE INSTALLATION

Refer to Figure 9 for the location of components.

Figure 9. Throttle Cable Installation

1.  Uncoil the throttle cable and housing.
2.  Check that the throttle cable is fed through the tube on 

the underside of the handle and secured to the upper 

handle and main tube with the zip ties. 

3.  Place the throttle in the idle position.
4.  Back off both the cable housing clamp screw and the 

swivel stop screw.

5.  Place the primary throttle return spring (P/N 21746) 

between the cable housing clamp and the swivel stop 

screw.

6.  Feed the cable assembly through the cable housing 

clamp, primary throttle return spring, and swivel stop 

hole, until the cable housing extends under the housing 

clamp to its far edge.

7.  Ensure that the cable housing is seated in the throttle 

cable receiver. Tighten the cable housing clamp screw.

8.  Pull cable end with pliers to remove slack.
9.  Tighten swivel stop screw to clamp cable.

CABLE

END

SWIVEL

STOP

SCREW

ADJUSTER

NUT

SWIVEL

STOP HOLE

CABLE

HOUSING

CLAMP

SCREW

CABLE

HOUSING

CLAMP

PRIMARY

THROTTLE

RETURN

SPRING

CABLE

HOUSING

END

TROWEL

THROTTLE

CABLE

10.  Adjust cable tension by loosening the lock nut on the 

throttle cable receiver (see Figure 10), loosening or 

tightening the adjusting nut below it, then retightening 

the lock nut.

Figure 10. Adjusting Cable Tension

Centrifugal Stop Switch Connection

1.  Connect the black tail wire from the engine to the 

top

 

black 

safety stop wire from the centrifugal stop switch 

as shown in Figure 11.

Figure 11. Safety Stop Switch Connections

IDLE

RUN

THROTTLE

LEVER

ADJUSTING

NUT (TOP)

LOCKING NUT

(BOTTOM)

 NOTICE

If the throttle lever does not return to the "neutral" 

position with throttle backed off, loosen adjusting nut  

1/2 turn at a time, tighten and recheck. Readjust throttle 

tension as necessary.

 NOTICE

Safety stop switches are equipped with 2 wires. 

Connect bottom 

BLACK/RED

 wire (Figure 11) directly 

to engine ground.

ON

OFF

CENTRIFUGAL

STOP SWITCH

BOTTOM

EXISTING

SCREW

FUEL TANK

TOP

BLACK/RED

ENGINE

GROUND

POINT

RECOIL

STARTER

COVER

MALE

FEMALE

BLACK

BLACK

TAIL WIRE

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