HK4400
•
Remove bolts that attach bearings
to the deck and lower brush assembly
down from the deck. Replace brush
halves.
•
Re-install all parts that were removed.
See next section for instructions on
how to properly tighten the chain.
Chain Drive
•
Accessing chain drive - remove the
shield located on the LH side of the
deck to access the chain drive. Re
move the rear two bolts and loosen the
front two bolts.
•
Tightening chain – position roller chain
on sprockets as shown below. Tighten
hex nut to compress the idler spring
until the flat washer contacts the black
nylon collar located on the inside of
the idler spring. Tighten jam nut to lock
in place.
•
Chain – inspect the chain every 250
hours and replace the chain when
chain elongation has reached 3%,
chain has become damaged, or im-
proper flex of chain is found.
•
Checking for elongation – with the
chain set at the proper tension, count
12 pins on the roller chain, and
measure the center to center distance
between the first and last pin. When
new, this measurement is 5.50” (13.97
cm). When this measurement is
greater than 5.66” (14.37 cm), the
chain should be replaced.
•
Sprockets – inspect the sprockets
every 250 hours and replace the
sprockets when the teeth become
sharp and pointed. See parts manual
for sprocket part numbers.
Parts List
DESCRIPTION
PART #
QTY
ITEM
BRUSH, 60 in
302003
1
1
WELDMENT, BROOM SHAFT
315368
1
2
Key, 1/4 X 1/4 X 1.25, Under
510089
1
3
FLANGE, 2 1/8 X 1, TJ-16
973002
3
4
305068
.25
(2.60)
Brush Assembly
65.50
(12.0)
1
2
4
3
APPLY BLUE LOCTITE
TO SETSCREWS
ASSEMBLY NOTE: ENSURE
BRISTLES ARE ALIGNED
WHEN ASSEMBLING TWO HALVES
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