Toro 74702 Operator's Manual page 31

Adjusting the Front-to-Rear
Blade Slope
Check the front-to-rear blade level any time you install the
mower. If the front of the mower is more than 5/16 inch
(7.9 mm) lower than the rear of the mower, adjust the blade
level using the following instructions:
1. Position the mower on a flat surface.
2. Disengage the PTO and move the control levers to the
neutral locked position and apply the parking brake.
3. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
4. Check the air pressure of all four tires. If needed, adjust
to the recommended inflation; refer to Tire Pressure,
page 28.
5. Check and adjust the side-to-side blade level if you
have not checked the setting; refer to Leveling the
Mower from Side-to-Side, page 30.
6. Measure the length of the rear trunion rod (Fig. 40). If
the rod length is not 11-1/2 inch (29.2 cm), remove the
clevis pin and cotter pin from the end of the rod
(Fig. 40), loosen the jam nut, and turn the yoke until the
11-1/2 inch (29.3 cm) dimension is obtained. Then
secure the yoke with the clevis pin and cotter pin.
Repeat this procedure on the opposite side of the
mower.
11-1/2 inch
(29.2 cm)
2 4
Figure 40
1. Rear trunion rod
2. Clevis pin and cotter pin
7. Set the height-of-cut at 3 inch (76 mm) and carefully
rotate the blades so they are facing front to rear
(Fig. 41).
8. Measure between the tip of the front blade (Fig. 41) and
the tip of the rear blade to the flat surface. If the front
blade tip is not 1/16–5/16 inch (1.6–7.9 mm) lower than
the rear blade tip, adjust the front trunion rods.
1
3
m–5177
3. Jam nut
4. Yoke
31
Front
2
4
Figure 41
1. Blade front to rear
2. Measure front blade tip
9. To adjust the front-to-rear blade slope, remove the
hairpin cotter from the front trunion yokes and loosen
the jam nuts (Fig. 42).
3
1
2
Figure 42
1. Front trunion rod yoke
2. Hairpin cotter
10. Rotate the yokes on the rods to change the adjustment
(Fig. 42). To raise the front of the mower, tighten the
yokes (shorten the rods). To lower the front of the
mower, loosen the yokes (lengthen the rods).
11. After adjusting both trunion rod yokes evenly, secure
the yokes with the hairpin cotters. Check the
front-to-rear level again. Continue adjusting the yokes
until the front blade tip is 1/16–5/16 inch (1.6–7.9 mm)
lower than the rear blade tip (Fig. 41).
12. When the front-to-rear blade slope is correct, tighten the
jam nuts (Fig. 40 and 42).
1078
3
1
4
3. Measure rear blade tip
4. Measure here
m–5178
3. Jam nut