Exmark MK523Q, Installation Instructions

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Installing the Mulch Kit
Important:
For Serial Numbers 790,000 and higher,
multiple accessories added to a base unit can change the
stability of the machine. Read the unit operator’s manual
to determine if counterbalance weights are necessary for
the accessories installed on the unit.
1. Make sure all moving parts have stopped, parking brake
is engaged, and the key has been removed.
2. Raise the front of the machine and support with jack
stands.
CAUTION
Raising the mower deck for service or
maintenance relying solely on mechanical
or hydraulic jacks could be dangerous. The
mechanical or hydraulic jacks may not be
enough support or may malfunction allowing
the unit to fall, which could cause injury.
Do Not rely solely on mechanical or hydraulic
jacks for support. Use adequate jack stands
or equivalent support.
3. Remove the blades; retain for removal of the finish cut
kit.
4. Remove and retain the discharge baffle as shown in
Figure 3 .
Note:
The inner bolt attaches the belt guide to the top
of the deck; retain the belt guide.
g008557
Figure 3
1. Discharge baffle
5. Referencing Figure 4 :
g008555
Figure 4
1. Hole location
•
If the deck does not have holes:
Use a drill, or a hammer and punch, remove the
material from the holes in the top of the deck and
the two in the front of the deck.
•
If the deck has holes:
Remove and retain the hardware in these holes.
6. Install the mulching baffles (items 1 and 2) and blocker
baffle (item 3). Refer to
Figure 2 and use the hardware
shown.
7. Align the holes on the cover plate (item 4) to holes on
the right side of the deck and RH mulch baffle (see
Figure 2 ). Install the bolts with the heads to the outside
of the deck.
8. Install new mulching blades (item 5) in place of the
existing blades.
•
For Serial Numbers 600,000 and Higher, torque to
55-60 ft-lb (75-81 N-m).
•
For Serial Numbers 599,999 and Lower, torque to
115-120 ft-lb (156-163 N-m).
Note:
If the blade mounts with a non-captive spring
disc washer, make sure to orient it with the cone
towards the bolt head (see
Figure 5 ).
g200278
Figure 5
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