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Craftsman 486.244120 Owner's Manual page 6

48" dozer blade

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1.
Assemble
one 1/2" x 4" hex bolt, one 1/2" hex nut
and one 7/1 6" standard
washer into top of slotted
hole in channel
assembly.
Assemble
one 7/16"
standard
washer and one 1/2" hex nut on bottom
of 1/2" bolt under channel
assembly.
See figure
10+ DO NOT TIGHTEN
AT THIS TIME.
2+ Assemble
channel
assembly
to hitch plates
at
front of tractor
as shown in figures 10 and 11.
1/2" x 4"
HEX BOLT
HITCH PLATES
1/2" HEX
NUTS
.
I
I 7!16" WASHERS
:2
PIVOT SHAFT
CHANNEL ASSEMBLY
FIGURE 10
3.
Assemble
keeper
plates
over each end of pivot
shaft with lip under hitch plates (see figure1 1) and
secure with two f/8" (large) h_:pin
cotters through
small
holes near each end of shaft.
CHANNEL ASS'Y
HITCH PLATES
PIVOT SHAFT
....
- --,_j
/
o
FIGURE 11
4,
Adjust
1/2" x 4" stop bolt, previously
assembled
into channel
assembly
(step 1)+ See figure
12.
Adjust
hex nuts,
above
and below
channel,
to
provide a minimum
1/8" clearance
between chan-
nel and the tractor
engine pulley with the stop bolt
positioned
against front axle frame member.
See
figure
12.
I
NOTE
The stop bolt must be located so that CENTER of bolt
contacts the front axle. The stop bolt must be tight_
ened in place before assembling
blade assembly to
channel.
FRONT AXLE
FRAME
lj8"
CLEARANCE
1/2" X 4"
HEX BOLT
MINIMUM
FIGURE 12
5.
Hold blade head upright and guide one end of
mount rod into hole near bottom of blade mount
gusset.
See figures
11 and 13.
Secure with a
hairpin cotter.
Slide other end of mount rod into
other blade mount gusset hole and secure with
hairpin cotter.
FRONT----'--'_
SPRING
ADJUSTMENT BOLTS
PLASTIC
CAP
BLADE READ
SPRING
ASSEMBLIES
CHANNEL
ASS'Y,
SPRING
MOUNTEARS
;IGURE 13
6.
Connect
curved end
of spring
assemblies
into
spring mount ears. See figure 13. Remove plastic
cap and one 3/8" hex nut from end of each spring
assembly. Hold blade back against stop bolts and
assemble
spring adjustment bolts up through bar.
Re-assemble
two 318" hex nuts, removed earlier,
onto adjustment bolts on top side of bar. Tighten
both spring adjustment nuts approximately
1" down
from end of bolt threads, see figure 13, to provid_
tension of blade against stop bolts.
7.
Adjust stop bolts to tilt blade forward
until 1-1/2"
distance
is obtained between pivot plate and blade
assembly
crossmember.
See figure
Page 6

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