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All Units:
Apply a light coat of grease to the front and rear of the
upper tube of the mount weldment. Install the hopper
assembly (item 1) onto the mount by slipping the hook
portion over the top mounting tube of the mount
weldment. Secure the assembly to the mount using the
clevis pins (item 19) and hairpins (item 20).
Installing the Blower Assembly
Units Serial Number 352,000–509,999
without Splined Blade Driver:
1. Stop the engine, remove the key, and wait for all
moving parts to stop.
2. Lower the deck fully. Remove the right hand belt
cover. Remove the belt cover mounting stud that
protrudes from the deck.
3. Remove the deck drive belt from around the right
hand spindle sheave.
4. Support the right mower blade and shaft so that it
will not fall out of the deck when the right sheave
nut is removed.
5. Remove the right sheave nut, spring disk washer, and
sheave from the spindle shaft.
Block the blade rotation with a block of wood
between the blade and baffles as indicated in
the blade service section of the units Operator's
manual. Do Not use the blade bolt to prevent
rotation.
6. Apply a light coat of Mobil HTS grease (or food
grade antisieze) to the top portion of the spindle
shaft where the sheave mounts.
Figure 11
7. Install the double sheave (item 12) onto the right
spindle shaft. Install the spring disc washer and
nut. Make sure that the spring disc washer cone is
installed towards nut (see Figure 12). Torque the
sheave nut to 140-145 ft-lb (190–197 N-m).
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.
1. Torque sheave nut to
140-145 ft-lb (190–197
N-m).
Check blade bolt torque after completing this
installation.
For units with a 5/8-18 x 2 3/4 inch blade bolt,
torque to 115-120 ft-lb (156-163 N-m).
8. Re-install the deck drive belt in the lower groove of
the double sheave. Install the plug (item 40) into the
bore of the double sheave.
Units Serial Number 599,999 and Lower
With Splined Blade Driver:
1. Stop the engine, remove the key, and wait for all
moving parts to stop.
2. Lower the deck fully. Remove the right hand belt
cover. Remove the belt cover mounting stud that
protrudes from the deck.
3. Remove the right side belt shield and the 5/16 x 3
1/4 inch bolt that secures the shield to the deck.
4. Remove the blade from the right spindle.
5. Insert special tool 109-2979 into splined end of
spindle shaft.
6. Remove the right sheave nut, spring disc washer, and
drive sheave from the spindle shaft– keep hardware
for re-use.
10
Figure 12
2. Install with cone towards
nut.
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