Craftsman 486.248531 Owner's Manual page 12

INSTALLING THE AUGER BELT
• The auger belt comes preassembled to the pulleys
on the snow thrower housing. Make sure the belt
passes over the top of the auger pulley and then
twists 1/4 turn to pass underneath each side idler
pulley. The "V" side of the belt must mate with the
grooves of the pulleys. See figure 22.
AUGER PULLEY
TWIST
1/4 TURN
IDLER
PULLEY
FIGURE 22
• Push the lift handle down to increase slack in the
belt (attachment pin must first be removed).
• Remove the 1/8" hairpin cotter that secures the end
of the idler arm spring to the right side of the clutch
idler assembly. Swing the idler arm to the left side.
See figure 23.
• Place the auger belt around the rear pulley and
between the two pulleys on the idler arm. The "V"
side of the belt must be seated in the grooves of
the "V" pulleys. See figure 23.
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.
1/8" HAIRPIN
COTTER
(Removed from
end of spring)
REAR
PULLEY
FIGURE 23 VIEWED FROM UNDERNEATH
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TWIST
1/4 TURN
IDLER
PULLEY
IDLER
ARM
LEFT SIDE
OF
TRACTOR
12
INSTALLING THE ATTACHMENT PIN
• Lift the front of the snow blower to align the holes
in the mounting plates and the side plates. From
the left side of the tractor install the attachment pin
through the holes, securing it with the 1/8" hairpin
cotter. Refer back to figure 21 on page 11.
SETTING THE AUGER BELT TENSION
• Pull the tensioning chain until the end of the spring
is pulled through the hole in the side of the Clutch/
Idler assembly. Install the 1/8" hairpin cotter
through the end of the spring, securing it on the
outside of the Clutch/Idler assembly. See figure 24.
IMPORTANT: For correct belt tension, the 1/8"
hairpin cotter must attach to the end of the spring,
not to the chain.
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.
1/8"
HAIRPIN
COTTER
END OF
SPRING
FIGURE 24 VIEWED FROM UNDERNEATH
LEFT SIDE
OF
TRACTOR
FLAT
PULLEY