42
2.
Stop the engine and wait for all moving parts to stop
before leaving the operating position.
3.
For a heavier drive setting, relocate the spring anchor
links to either the
medium
or
heavy duty
positions
(Fig. 56). The spring anchor links are attached to the
upper rear corner of the hydro drive shields on the left
and right sides of the machine.
Note:
In the medium or heavy duty positions, the drive
lever forces at the upper handle will also be increased
2
4
3
1
Figure 56
1. Spring anchor
2. Standard setting
3. Medium setting
4. Heavy duty setting
Checking the Belts
Service Interval/Specification
Check all belts after every 50 operating hours or monthly,
whichever occurs first. Look for dirt, wear, cracks, and
signs of overheating.
Replacing the Mower Belt
1.
Disengage the PTO and set the parking brake.
2.
Stop the engine and wait for all moving parts to stop
before leaving the operating position.
3.
Remove the knobs and the belt cover on the mower.
4.
Remove the idler pulley and the worn belt (Fig. 57).
5.
Install the new mower belt.
6.
Install the idler pulley.
7.
Engage the blade control (PTO) lever and check the belt
tension. Refer to Adjusting the Mower Belt Tension,
page 43.
Note:
Proper belt tension is 10–15 lbf. (44–67 N) with the
belt deflected 1/2 inch (13 mm) halfway between the
pulleys (Fig. 57).
2
m–4731
3
4
1
Figure 57
1. Idler pulley
2. 1/2 inch (13 mm)
deflection here
3. Assist arm
4. Front stop
8.
Engage the blade control (PTO) lever.
9.
Check the clearance between the bell crank and the
transmission output shaft (Fig. 58).
m–3860
1
4
5
6
2
3
Figure 58
1. 1/16–1/8 inch (2–3 mm)
2. Bell crank
3. Transmission output shaft
4. Hairpin cotter
5. Clevis pin
6. Clevis
Note:
The clearance should be 1/16–1/8 inch (2–3 mm).
10.
Remove the hairpin cotter and the clevis pin from the
bell crank.
11.
Rotate the clevis clockwise on the rod to increase the
clearance or counterclockwise to decrease it (Fig. 58).
12.
Disengage the blade control (PTO) lever.