Correcting Cutting Unit Mismatch; Setting The Front-To-Rear Pitch - Toro 74191 Operator's Manual

Correcting Cutting Unit
Mismatch
If one cutter blade cuts lower than the other, correct
as follows:
1. Stop the engine, remove the key and disconnect
the spark plug wire(s) from the spark plug(s).
2. Adjust the tire pressure in all tires to
specifications and check that the blades are not
bent. Refer to Checking for Bent Blades on
page 53.
3. Set the height-of-cut to the 2-1/2" position.
Refer to Adjusting the Height-Of-Cut in the
Operation section. Make sure the clevis pins are
resting on the frame cushions and there is no
excessive wear push arm pivot points.

Setting the Front-to-Rear Pitch

1. Check the tire pressure on both deck and traction
unit.
2. Position one blade front-to-rear (Fig. 61).
Measure at "C" and "D" locations (Fig. 61) from
a level surface to the cutting edge of the blade
tips (Fig. 62).
3. The mower should be 1/4"–1/2" (6–13 mm)
lower in front "C" than in the rear "D". Repeat
for opposite blade.
Figure 61
Figure 62
4. To change the front-to-rear pitch, remove the
retaining ring and move an equal number of
thrust washers on both castor wheel forks. Move
the thrust washers from the top of the carrier
frame mounting tube to the bottom to raise the
front of the mower. Move the thrust washers
from the bottom of the mounting tube to the top
to lower the front of the mower (Fig. 33).
5. Check the side-to-side leveling of the cutting
unit.
Maintenance
m–3372
m–3372
55