Correcting The Mower Quality Of Cut; Frame Set Up - Toro 30431 Operator's Manual

Removing the Blades
Blades must be replaced if a solid object is hit, if the blade
is out of balance or is bent. To ensure optimum
performance and continued safety conformance of the
machine, use genuine TORO replacement blades.
Replacement blades made by other manufacturers may
result in non-conformance with safety standards.
1. Hold the blade end using a rag or thickly-padded glove.
Remove the blade bolt, blade stiffener, washer, and
blade from the spindle shaft (Fig. 43).
2
5
6
4
Figure 43
1. Sail Area of Blade
2. Blade
3. Blade spindle
Sharpening the Blades
1. Use a file to sharpen the cutting edge at both ends of the
blade (Fig. 44). Maintain the original angle. The blade
retains its balance if the same amount of material is
removed from both cutting edges.
1
Figure 44
1. Sharpen at original
angle
2. Check the balance of the blade by putting it on a blade
balancer (Fig. 45). If the blade stays in a horizontal
position, the blade is balanced and can be used. If the
blade is not balanced, file some metal off the end of the
(Fig. 43).
sail area only Repeat this procedure until the
blade is balanced.
3
1
m–6368
4. Blade Bolt
5. Blade stiffener
6. Flat washer
m–1854
34
1
Figure 45
1. Blade
Installing the Blades
1. Install the blade onto the spindle shaft
Important
The sail part of the blade must be pointing
upward, toward the inside of the mower to ensure proper
(Fig. 43).
cutting
2. Install the lock washer and blade bolt
the blade bolt to 85–110 ft-lb (115–140 N m).
Correcting the Mower Quality
of Cut
If one deck blade cuts lower than the other, correct as
follows.
Tire air pressure is critical in these procedures.
Note:
Make sure all tires have correct pressure.
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position. Disconnect the spark plug wire(s) from the
spark plug(s).
3. Adjust the tire pressure in all tires to specifications on
page 29.
4. Check that the blades and spindle shafts are not bent.
Refer to Checking for Bent Blades on page 33.
5. Set the height-of-cut to the 4 inch (101.6 mm) position.
Refer to Adjusting the Height-Of-Cut in the Operation
section.
6. Perform steps in the following sections Frame Set Up,
Checking Front–to–Rear Pitch and Checking
Side–to–Side Leveling.

Frame Set Up

Checking Carrier Frame and Deck
Alignment
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
2
m–1855
2. Balancer
(Fig. 43).
(Fig. 43).
Torque