Exmark Laser Z Ultra Vac Operator's & Parts Manual page 14

NOTE: On units with wrench flats on the spindle just above the blade use a 1-inch
wrench on the flat sides of the spindle shaft to prevent the spindle from turning. On
units that do not have a wrench flat, block the blade rotation with a block of wood
between the blade and baffles as indicated in the blade service section of the Lazer Z
operator's manual. Do not use the blade bolt to prevent rotation. Check blade bolt
torque after completing this installation (115 – 120 ft. lbs.).
8. Re-install the deck drive belt in the lower groove of the double sheave. Install the
plug (Item 24) into the bore of the double sheave.
9. Remove the discharge chute from the deck. Discard the mounting hardware, but
save the discharge chute for use during side discharge operation. The chute pivot
pin (Item 21) and hairpin (Item 22) may be stored in the pivot holes on the discharge
chute during bagging operation.
52 inch units only (60 and 72 inch units skip to step 17)
10. Remove the belt guide on the blower (see figure 3)
11. Install the belt (Item 13) included in the completing kit onto the blower assembly as shown.
12. Reinstall the belt guide removed in step 9.
13. If the Ultra Vac is being installed on a Lazer Z with a serial number less than 260,000, it is
recommended to replace the steel blocker plate mounted across the bottom of the blower
FIGURE 2
FIGURE 3
BELT ROUTING
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