Correcting The Mower Quality Of Cut; Frame Set Up - Toro 39488 Operator's Manual

Figure 67
1. Blade
Installing the Blades
1. Install the blade onto the spindle shaft (Figure 64).
Important: The sail part of the blade must be
pointing upward, toward the inside of the mower
to ensure proper cutting (Figure 64).
2. For 48 inch mower decks, install the blade, curved
washer, and blade bolt (Figure 64).
3. For 36 inch mower decks, install the blade, stiffener,
curved washer, and blade bolt (Figure 65).
4. Torque 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.
Note: Tire air pressure is critical in these procedures.
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 the
rear tires to specifications; refer to
Drive System Maintenance (page 33) .
4. Check that the blades and spindle shafts are not
bent. Refer to Checking for Bent Blades.
5. Set the height-of-cut to the 4 inch (101.6 mm)
position. Refer to Adjusting the Height-Of-Cut in
Operation (page 13).
6. Perform the steps in the following sections Frame
Set Up, Checking Front-to-Rear Pitch, and Checking
Side-to-Side Leveling.
2. Balancer

Frame Set Up

Checking the Carrier Frame and Engine
Deck Alignment
Note: Misalignment can cause excess wear on the PTO
drive belt.
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.
3. Place a long straight edge on top of the engine deck
as shown in Figure 68.
4. At the carrier frame cross channel, measure the
height at location A (Figure 68). This measurement
must be 1-5/16 inch (33 mm), plus or minus a 1/4
inch (6 mm).
5. If the height at location A is not correct, adjustment
is needed.
6. Loosen the carrier frame mounting bolts on both
sides of the machine (Figure 68).
7. Align the carrier frame and engine deck to match
1-5/16 inch (33 mm), plus or minus a 1/4 inch (6
mm) at location A (Figure 68).
8. Tighten the carrier frame mounting bolts on both
sides of the machine.
1. Carrier Frame
2. Top of engine deck
3. Carrier frame mounting
bolts
47
Figure 68
4. Location A, 1-5/16 inch
(33 mm) ±1/4 inch (6 mm)
5. Straight edge
6. Carrier frame cross
channel