Exmark LAZER Z ULTRA VAC QDS Setup Instructions page 9

16. Reinstall the deck drive belt in the lower groove of
the double sheave. Install plug (Item 40) into
bore of double sheave.
17. 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.
Units 600,000 and Higher:
18. Lower the deck fully. Remove the right hand belt
cover. Remove the belt cover mounting stud that
protrudes from the deck. Save the knob for later
use.
19. Remove the blade from the right spindle.
20. Insert special tool 109-2979 into splined end of
spindle shaft.
21. Remove the right sheave nyloc nut, washer, and
splined washer from the spindle shaft. Do not
remove the blade drive sheave. Retain the nut for
later use.
Use special tool 109-2979 to hold spindle from
rotating. Do not use the blade bolt to prevent
rotation.
22. Install the Ultra Vac drive sheave onto the right
spindle shaft. Install the washer that is supplied
with the Ultra Vac drive kit (Item 38) and nut
removed in step 4. Torque the sheave nut to:
5/8-18 Nut (15/16 Hex) 90-110 ft-lbs.
Use special tool 109-2979 to hole spindle from
rotating (See Figure 10). Do not use the blade
bolt to prevent rotation.
Reinstall blade and torque bolt to: For units
with a 1/2-20x2 blade bolt, torque to 50-60 ft-
lbs (75-81 N-m).
FIGURE 10
23. Reinstall the deck drive belt in the lower
grove of the double sheave. Install plug
(Item 40) into bore of top sheave.
24. 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.
25. Install deflector (Item 46) at the front right
corner of deck as shown in Figure 11. Use
carriage bolt, nut and washer that retains right
corner of adjustable front baffle.
FIGURE 11
26. Install the belt cover mounting stud (Item 27).
For 60" units only, install the spacer (Item
29), two 7/16 spring disk washers (Item 30)
and the plastic knob (See Figure 12). The
knob does not need to be tightened
against the washers at this time.
FIGURE 12
27. Install the mounting pin weldment (Item 18) to
the blower assembly using the 3/8-16 x .75
bolts (Item 28) and whizlock nuts (Item 24).
Maximum deck clearance will be provided if
the bolts are installed from below the
Page 9 of 13
109-4195 Rev. A