Exmark LAZER Z LHPUV4448 Setup Instructions page 6

10. Reinstall the deck drive belt in the lower groove
of the double sheave. Install plug (Item 27) into
bore of double sheave.
11. Install 5/16-18 x .62 screw (Item 26) into hole
that 5/16 – 18 x 3 ¼ bolt was removed from on
the deck. Use the whizlock nut removed in step
2. Install bolt with head to inside of deck.
12. Install the new belt cover (Item 25) secure
with the two belt shield knobs (Item 22)
as shown in Figure 2.
NOTE: Do not reinstall the 5/16 x 3 1/4 bolt that
was removed in step 2.
Units 600,000 And Higher
1. Stop engine, remove key, and wait for all
moving parts to stop.
2. Remove the right side belt shield and the belt
shield stud that secures the shield to the deck
– save the three-pronged knob for later use.
3. Remove the blade from the right spindle.
4. Insert special tool 109-2979 into splined end
of spindle shaft.
5. Remove the right sheave nylock nut, washer,
and splined washer from the spindle shaft.
Do not remove the blade drive sheave. Retain
the nut for later use.
6. Use special tool 109-2979 to hold spindle from
rotating – keep hardware for re-use. Do not
use the blade bolt to prevent rotation.
7. Install the Ultra Vac drive sheave onto the
right spindle shaft. Install the washer that is
supplied with the Ultra Vac drive kit (Item 31)
and nut removed in step 1. 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. Do not use the
blade bolt to prevent rotation.
FIGURE 6
8. Reinstall blade on the right spindle.
For units with a 1/2-20x2 1/4 blade bolt,
torque to 50-60 ft-lbs (75-81 N-m)
9. Install plug (Item 27) into bore of double
sheave.
10. Install 5/16-18 x .62 screw (Item 26) into
hole that belt shield stud was removed from
on the deck. Use the whizlock nut removed
in step 2. Install bolt with head to inside of
deck.
11. Place carriage bolts (Item 32) into square
holes on deck stiffeners. Secure loosely
with belt shield knobs (Item 22) Install belt
cover and tighten.
NOTE: Do not reinstall the belt shield
stud that was removed in step 2.
109-3195 Rev. C
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