Simplicity 5100251-00 Operator's Manual page 11

MowerDeckPreparation
Remove the Spindle Pulley
1. Remove the 3/4-16 hex nut & 3/4" spring washer (A
& B, Figure 9) securing the spindle pulley (C) to the
spindle shaft. Use a 1" wrench on the flats of the
blade end of the spindle shaft to prevent the shaft
from spinning. Save the 1/4" key (D).
Install the Double Spindle Pulley
1. Install the double spindle pulley (C, Figure 10) and
1/4" key (D) onto the spindle shaft.
2. Install the 3/4" spring washer (B) with the cone facing
up (see insert, Figure 10). Install the 3/4-16 hex nut
(A) and torque to 85-90 ft. Ibs (115-122 Nm). Use a
1" wrench on the flats of the blade end of the spindle
shaft to prevent the shaft from spinning.
Figure 9. Remove Spindle Pulley
A. 3/4-16 Hex Nut
B. 3/4" Spring Washer
C. Spindle Pulley
D. 1/4" Key
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Figure 10. Install Double Spindle Pulley
A. 3/4-16 Hex Nut
B. 3/4" Spring Washer
C. Double Spindle Pulley
D. 1/4" Key
Reinstall the Spindle Belt
Refer to the belt removal instructions on Page 9 and
reverse the order for reinstalling the belt.
Install the Deck Guard
1. Install the new deck guard onto the mower deck and
secure with the hardware previously removed (see
Figure 11).
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Figure 11. Install Guard
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