45
m–3746
1
2
Figure 65
1.
Fixed idler
2.
Adjustment slot
8. Check the belt tension again. The center bolt of the
spring loaded idler must be between the two alignment
holes in the left support plate (Fig. 64). Adjust it, if
necessary, and tighten all hardware securely.
9. If the fixed idler contacts the end of the adjustment slot
and more belt tension is required, a small change to
lengthen the push arms can be made (Fig. 66).
10. To lengthen, loosen the jam nut and rotate the ball joint
counterclockwise, one turn at a time. Adjust each side
the same amount.
4
3
2
1
m–6273
Figure 66
1.
Push arm
2.
15-5/16 inches (389 mm)
nominal
3.
Jam nut
4.
Ball joint
11. Rotate the belt guide on the rear of the mower so that it
is 1/8–1/4 inch (3–7 mm) away from the vertical side of
the PTO belt (Fig. 67).
2
M–4374
1
3
Figure 67
1.
Belt guide
2.
PTO drive belt
3.
1/8–1/4 inch (3–7 mm)
Replacing the Pump Drive Belt
Check pump drive belt for wear after every 50 hours of
operation.
1. Pull the spring loaded idler down and remove the
traction belt from the engine and hydro pump pulleys
(Fig. 68). Remove the belt between the pulleys.
2. Install the new belt around the engine and hydro pump
pulleys (Fig. 68).
3. Pull the spring loaded idler down and align it below the
traction belt. Release the pressure on the spring loaded
idler (Fig. 68).
Figure 68
Adjusting the Parking Brake
Check the parking brake for proper adjustment.
1. Disengage the brake lever (lever down).
2. Measure the length of the spring. The measurement
should be 2-3/4 inch (70 mm) between the washers
(Fig. 69).
3. If an adjustment is necessary, loosen the jam nut below
the spring and tighten the nut directly below the yoke
(Fig. 69). Turn the nut until the correct measurement is
obtained. Tighten the two nuts together and repeat on
the opposite side of the unit.
4. Turn the nuts clockwise to shorten the spring length and
counterclockwise to lengthen the spring.
Summary of Contents for Z287L Z Master
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