Toro 73551 Setup Instructions page 3

2. Using a suitable hoist, raise the front of the
tractor only high enough to install the front
wheel spindles.
IMPORTANT: Do not pivot the weight of the
tractor onto the rear drawbar hitch because
the hitch will be damaged.
3. Install a 1.56" O.D. x .06" thick unplated thrust
washer onto the splined shaft of the R.H. wheel
spindle (Fig. 4).
4. Install the splined end of the R.H. spindle
through the R.H. end of the front axle and into
the steering arm (Fig. 4).
Note: The L.H. and R.H. spindles are
different. Assemble the spindles as
shown in figure 3.
Note: The outside edge of the spindle must
be parallel to the end of the steering
arm (Fig. 3).
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Figure 3
1. R.H. Spindle
2. L.H. Spindle
5. Secure the spindle shaft to the steering arm with
a 5/16"–18 x 2.25" bolt and 5/16" nut (Fig. 4).
Torque the nut to 230
6. Insert a 1.50" O.D x .05" thick plated wheel
washer onto the R.H. spindle (Fig. 4).
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3. Steering arm
4. Parallel relationship
25 in–lbs.
7. Install a front wheel onto the R.H. spindle with
the valve stem facing inward (Fig 4).
8. Insert another 1.50" O.D x .05" thick plated
wheel washer onto the R.H. spindle (Fig. 4).
9. Install a 2.50" O.D x .05" thick hub cap washer
onto the spindle. Now insert a .156 x 1.50" long
cotter pin into the hole in the spindle (Fig. 4).
10. Check the front wheel end play. Install shim
washers inside the hubcap washer as necessary
so there is minimum end play.
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Figure 4
1. Wheel spindle
2. Unplated thrust washer
1.56" x .06" thick
3. Front axle
4. Steering arm
5. Bolt 5/16"–18 x 2.25"
6. Nut 5/16"
7. Spindle cap
11. Secure the wheel to the spindle with a cotter pin.
Bend the ends of the cotter pin completely
around the spindle.
12. Install a hubcap onto the hubcap washer until it
snaps in place (Fig. 4).
Set-Up Instructions
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8. Plated wheel washer 1.50"
O.D. x .05" thick
9. Hub cap washer 2.50"
O.D. x .05" thick
10. Shim washer 1.50" O.D. x
.015" thick
11. Cotter pin .056" x 1.50"
12. Hubcap
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