Troy-Bilt 12A-E753B063, Service Manual

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Servicing the Troy-Bilt Wide Cut 33” Combination Mower
6
IMPORTANT: Time the blades properly during
reassembly. Set the cutting blades perpendicular
to each other during installation of the toothed
drive belt.There are arrows cast into the cogged
pulleys to help align the blades. Offset these
arrows by 90 degrees. See Figure 18.
NOTE: The arrows do not indicate the blade
position. Blades are 90 degrees offset from the
arrow position.
5.10. Rotate the tension adjustment bracket into posi-
tion and apply tension to the spindle housing
and cogged belt.
5.11. Tighten the adjustment bracket screw.
5.12. Tighten the four spindle mounting bolts to 15 ft.
lbs.
NOTE: Proper belt tension is achieved when the
belt deflects approximately 1/2 inch at the mid-
point between the pulleys when applying moder-
ate finger pressure.
5.13. Reinstall the blade drive belt over the left drive
spindle.
5.14. Install the belt cover.
6. BLADE BRAKE REPLACEMENT
6.1. Using a ½ inch socket remove the four screws
securing the belt cover and removed the cover.
6.2. Secure the operator presence control lever to
the left handlebar using a plastic tie or tape. See
Figure 19.
6.3. Engage the blade control lever to move the
brake pad away from the drive pulley. See Fig-
ure 20.
Figure 18
Blade Alignment Arrow
Figure 19
Operator Presence Lever
Plastic Tie
Figure 20
Blade Control Lever Engaged