8
7
6
7
9
10
ITEM NO.
PART NUMBER
DESCRIPTION
QTY.
6
2560622
De-Thatch Blade
14
ITEM NO.
PART NUMBER
DESCRIPTION
QTY.
7
2558468
2lb. Forged Blade
28
ITEM NO.
PART NUMBER
DESCRIPTION
QTY.
8
2558544
1" Blade Bolt - Std
14
ITEM NO.
PART NUMBER
DESCRIPTION
QTY.
9
2558349
1" Slotted Nut
14
ITEM NO.
PART NUMBER
DESCRIPTION
QTY.
10
2560759
1/4" X 1-1/2" Roll Pin
14
17
2
18
14
15
6
7
5
10
11
8
9
12
13
16
ITEM
NO.
PART NUMBER
DESCRIPTION QTY.
1 2562322 Rev B
OHLA
Weldment
2013
1
2 2561301
3/8 Flat
Washer
Yellow Zinc
2
3 2558023
7/16"-14 Top
Lock Nut
4
4 2556571
1/2"-13 Top
Lock
4
5 2560643
Martin 4 5V
670 SK
Sheave
1
6 2562533
OHLA - SAE C
Stub Shaft -
Splined
1
7 2562551
QD Bushing
2.25
1
8 2562558
ER Bearing
Inserts
1
9 2562534 Rev A
Bearing
Housing Cap
1
10 2562607
Bearing
Housing
1
11 2558017
1/4-28
Grease Zerk
1
12 Default
5 PSI Poppet
Valve
1
13 M257A(767DU)RRZA25-
6
1
14 2600231
1/8in MPT 90
Grease Fitting 1
15 2562327
UCFCX0824
Pilot Bearing
1
16 2560899
4-5VX600 Belt
1
17 2559405
3/8"-16 x 3/4"
Grade 8 Bolt
2
18 2563252 Belt Cover Rev
B
1
19 2600387
7/16"-14 x 2
Grade 8 Bolt 4
20 2600394
1/2"-13 x 4"
Grade 8 Bolt 4
Belt Drive Assembly
Cutter Shaft Assembly
Part #2562445
P
ar
ts List
Complete Blade, Bolt and
Nut Kit EX50HD & HDBD
Part #2564498
Replacing Completed OHLA Assembly
1. Bolt the completed OHLA onto the Head
2. With the pully on the shaft, place a straight edge from pully to pully using
the same groves on each pully.
3. Measure from the back plate to the piece of metal/wood that you are using at the top
and the bottom. If measurements do not match, adjust the pully and QD on the shaft.
4. Loosen the OHLA and let it slide down as far as it will go with all three bolts in-
stalled and put the belt on. (If belt is very tight and doesn’t want to go on, take out
the upper bolt on the OHLA and loosen the the bottom two until they are half way
out. This allows the OHLA to sit at an angle and will make installing the belt easier).
5. To tighten the belt, use two pry bars and an extra set of hands. Place one pry
bar under each side of the motor and push down on them moving the motor up.
6. Measure free play of the belt. Should be about 1/16”.
7. Tighten all three OHLA mounting bolts.
