PowerBoss Nautilus Hi-Dump PB45HDSL, Service Booklet

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NAUTILUS DIRECTIONAL CONTROL ADJUSTMENT.
For correct operation the directional control adjustments must be made in the order shown below.
Note: Step one is necessary only when replacing the Hydroback pump centering unit 731181 or the
directional control cable 730356.
1. DIRECTIONAL CONTROL CABLE INSTALLATION AND ADJUSTMENT.
At the pump-end of the directional control cable:
Install one 5/8 jam nut onto the cable jacket threads.
Slide two star lock washers up to the 5/8 jam nut.
Position the end of the directional control cable into the Hydroback unit then thread the ¼-28 threaded
rod on the end of the cable into the small end of the Hydroback unit so that the ¼-28 threaded cable rod
sticks out .31 inches from the small end of the Hydroback unit.
Thread one 1/4-28 jam nut against the face of the Hydroback unit and tighten.
Install the ¼-28 rod end onto the end of the cable and tighten against the jamb nut.
Thread the 5/8 threaded end of the Hydroback unit onto the 5/8 threaded cable jacket.
Mount the cable/Hydroback assembly onto the Hydroback adjustment plate with one star washer
located on each side of the adjustment plate.
With the Hydroback unit in the spring-centered position, slide the Hydroback mount and star washer
tightly against the adjustment plate and then tighten the 5/8 jam nut
.
Attach the rod end to the pump centering arm.
2. PROPULSION PUMP CENTERING (NEUTRAL) ADJUSTMENT:
With the rear wheel raised off of the floor and the engine running at operating speed (not at idle), adjust
the Hydroback adjustment plate so that the rear wheel returns to neutral (zero rotation) after fully
pressing, then releasing, the directional control pedal in forward and in reverse.
3. DIRECTIONAL CONTROL CABLE INSTALLATION AND ADJUSTMENT
At the pedal-end of the cable:
Install the directional control pedal stop bolt so the top of the bolt remains clear of the movement of the
directional control pedal. This bolt will be adjusted later.