16 Mower Deck Service
Arbor Assembly - 44” & 50” Mowers
16 - 22
Arbor Assembly - 44” & 50” Mowers
Refer to Figure 10 for the following procedure.
1. Install the washer (N) on the arbor shaft (O) cup side
down.
2. Install the shaft and washer assembly through the arbor
housing (K), bearings (I and F), and spacers (H and G).
NOTE: 38” mower decks use two identical bearings. 44”
decks use two different bearings and therefore require a
sleeve spacer (G) be used with the upper bearing (F).
38” decks do not use the sleeve spacer (G).
3. Fill the housing with Simplicity Multi-Purpose Lithium
Grease or equivalent.
4. Assemble the foam gasket (J), arbor housing cover
(E), pulley hub adapter (D), pulley (C), belleville
washers (B) and nut (A) as shown.
NOTE: If a new foam gasket (J) is not used, seal the
arbor housing and cover with RTV or silicon sealer.
A. Flange Hex Nut
B. Belleville Washer
C. Pulley
D. Adapter Hub
E. Arbor Housing Cover
F. Upper Bearing
G. Sleeve Spacer (44" Only)
H. Arbor Spacer
I. Lower Bearing
J. Foam Gasket
K. Arbor Housing
L. Grease Fitting
M. Taptite Screw
N. Washer
O. Arbor Shaft
P. Lower Grass Shield
Q. Blade
R. Hex Washer
S. Spring Washer
T. Capscrew
Figure 10. Arbor Assembly
5. Align the alignment pins on the arbor housing (K) and
cover (E) and press housing together.
6. Torque the hex nut (A) to 50-70 ft. lbs.
7. Install the arbor assembly in the deck shell and
secure with the six hex head taptite screws
(see Figure 5).
8. Install the lower grass shield and mower blades as
described in Section 6, COMMON SERVICE
PROCEDURES.
NOTE: The arbor shaft may have up to 1/8" of end-play.
This is normal and acceptable.
Torque to 45-55 ft. lbs.
A
C
B
D
E
G
H
J
I
F
M
L
K
N
O
Q
P
R
T
S
JDHM
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