Havener Pistol-Grip Hydro Walk-Behind Mower 36, 48 & 52 - Manual (Page 21)

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5. Turn adjustment nut”A” just until the wheel turns rearward. Make a note
of the position of the adjustment nut. To adjust to neutral, split the
difference between the two noted positions of the adjustment nut.
Tighten the nuts.
NOTE: Make sure that the safety switch is engaged.
6. For the right side, repeat step 5. (See figure 21)
7. Make sure that the traction control levers are in the neutral position
(Figure 3). Rotate swivels and insert them back into traction idler arm
secured with the washer and hair pin cotter.
Tracking Adjustment
Only adjust the tracking if the machine is pulling to one side.
1. With the machine on a flat surface, start the engine and place the speed
control lever on the speed that will most often be used.
2. Squeeze the control lever and release the tracking lever lock. Slowly
release the control levers, allowing the machine to move forward.
3. If the machine pulls to the right side, stop the mower by placing the tracking
control levers in the neutral position. Turn the adjustment knob nut
counter-clockwise until the machine tracks straight. If the machine pulls to
the left side, turn the tracking adjustment knob nut clockwise until the
machine tracks straight. (See figure 22).
CAUTION: Before proceeding with this adjustment, be sure that the tire
pressure is correct and of equal circumference.
Figure 20
Figure 21
Figure 22