Craftsman 247.886640 - Manual (Page 16)

Remove the frame cover underneath the snow
thrower by removing six self-tapping screws. For
tocation of the frame cover, see Figure 19.
When the traction control is released, there must be
clearance between the friction wheel and the drive
plate in all positions of the shift lever. When the
traction control is engaged, the friction wheel must
contact the drive plate. See Figure 20.
Drive
Plate
Figure 20
• If any one of these are not occuring, adjustment is
necessary. Follow the steps below to adjust the
traction control.
• Loosen the lock nut on the traction control cable
and thread the cable in or out as necessary.
Tighten the lock nut to secure the cable when
correct adjustment is reached. Reassemble the
frame cover.
NOTE: If you placed plastic under the gas cap earlier,
remove it now.
Auger Control
• To adjust the auger clutch, refer to Final Assembly
and Adjustments on page 9.
Carburetor
A WARNING: If any adjustments need to be
made to the engine while the engine is running
{e.g. carburetor), keep clear of all moving
parts. Be careful of muffler, engine and other
surrounding heated surfaces.
• Minor carburetor adjustment may be required to
compensate for differences in fuel, temperature,
altitude and load.
Drive Wheels
• The wheels may be adjusted for two different
methods of operation. Follow the steps below for
adjustment. See Figure 21.
Klick Pin in Hub
ole and Inner Axle Hole
Outside
Hole In Axle
Figure 21
One Wheel Driving
•
On the right side of the unit, place klick pin in the
outside axle hole only. Do not place pin through
wheel hub. This position gives power drive to the
left wheel only, making the unit easier to maneuver.
Both Wheels Driving
• Rotate wheel assembly to align hole in the hub with
the inner hole on the axle shaft. Insert klick pin in
the hole. Outer axle shaft hole should be visible.
See Figure 21.
A
WARNING: Before servicing, repairing, or
inspecting, disengage all clutch levers and
stop engine. Wait until all moving parts have
come to a complete stop. Disconnect spark
plug wire and ground it against the engine to
prevent unintended starting.
Servicing Augers
• The augers are secured to the spiral shaft with two
shear bolts and hex lock nuts. See Figure 16. If you
hit a hard foreign object or ice jam, the snow
thrower is designed so that the bolts may shear.
• If the augers will not turn, check to see if the bolts
have sheared. Replacement shear bolts and hex
lock nuts have been provided with the snow
thrower. When replacing bolts, spray an oil
lubricant into shaft before inserting new bolts.
Shave Piate and Skid Shoes
• The shave plate and skid shoes on the bottom of
the snow thrower are subject to wear. They should
be checked periodically and replaced when
necessary.
• To remove skid shoes, remove the four carriage
bolts, cupped washers and hex nuts which attach
them to the snow thrower. Reassemble new skid
shoes with the four carriage bolts, cupped washers
(cupped side goes against skid shoes) and hex
nuts. See Figure 22.
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