Craftsman 486.248531 Owner's Manual page 9

INSTALLING CLUTCH/IDLER ASSEMBLY
• Turn the clutch/idler assembly upside down and
place the extra tensioning chain through the hole
shown in figure 11.
TENSIONING CHAIN
FIGURE 11
• Hook the loose spring through the end of the
tensioning chain. See figure 12.
• Hook the other end of the spring onto the bottom of
the bolt and nut which secure the idler pulley to the
upper idler arm. Hold the bolt head and assemble a
3/8" hex lock nut onto the bolt, leaving it loose
enough for the spring to pivot freely between the
two nuts. See figure 12.
• Attach a 3/32" hairpin cotter to the chain, placing it
in the fifth link from the spring. See figure 12.
SPRING
3/8" HEX
LOCK NUT
RIGHT
SIDE
FIGURE 12
• Attach the clutch/idler assembly to the tractor frame
as follows. Hook the assembly's notched arms onto
the two shoulder bolts you assembled to the inside
of the tractor frame. Lift the front of the assembly
and attach it to the R.H. and L.H. hanger brackets
using two pivot lock pins and 1/8" hairpin cotters.
See figure 13.
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USE THIS HOLE
5TH LINK
CHAIN
(L.H. SIDE)
3/32" HAIR
COTTER PIN
LEFT
SIDE
VIEW OF BOTTOM
1/8" HAIRPIN COTTER
FIGURE 13
• Assemble the short "V" belt onto the engine pulley
and then onto the large pulley on the clutch/idler
assembly. The belt must be placed to the inside of
the idler pulley and the keeper bolt. See figure 14.
IMPORTANT: Do Not assemble the "V" belt
around the outside of the keeper bolt.
• Place tension on the belt by pulling the left side
tensioning chain out as far as the 3/32" hairpin
cotter will allow. Secure the chain with a 1/8"
hairpin cotter. See figure 14.
Hold this drawing above you while viewing the
Clutch/Idler Assembly from underneath the
tractor. Right and left in the drawing will be the
reverse of the viewer's right and left.
IDLER
PULLEY
FIGURE 14
9
PIVOT LOCK PIN
(use second hole)
RIGHT SIDE VIEW
3/32" HAIRPIN
ENGINE
ENGINE
COTTER
PULLEY
PULLEY
1/8" HAIRPIN
COTTER
KEEPER
BOLT
Left Side
of Tractor
VIEWED FROM UNDERNEATH