Final Adjustments - MTD 640 Operator's Manual

Final Adjustments

Skid Shoes
The space between the shave plate and the ground
can be adjusted. For close snow removal, place skid
shoes in the low position. Use middle or high position
when area to be cleared is uneven.
• Adjust skid shoes by loosening the four hex nuts
and carriage bolts and moving skid shoes to
desired position. See Figure 4. Make certain the
entire bottom surface of skid shoe is against the
ground to avoid uneven wear on the skid shoes.
Retighten nuts and bolts securely.
Carriage
Bolts
Hex Nuts
Figure 4
WARNING:
thrower on gravel as loose gravel can be
easily picked up and thrown by the auger
causing injury to the operator and/or damage
to the snow thrower.
Tire Pressure (Pneumatic Tires)
• The tires are over-inflated for shipping purposes.
Check tire pressure and reduce to 15 to 20 psi.
NOTE: If the tire pressure is not equal in both tires, the
unit may pull to one side or the other.
Auger Control
• To check the adjustment of the auger control, push
forward on the left hand control, depressing the
rubber bumper on end of control. There should be
slack in the cable. Release the control. The cable
Skid
Shoes
Do not operate this snow
should be straight. Make certain you can depress
the auger control against the left handle
completely.
• If necessary, loosen the hex jam nut and thread
the cable in (for less slack) or out (for more slack)
as necessary. Recheck adjustment. Tighten jam
nut when correct adjustment is reached. See
Figure 5.
Hex Lock
Nut
Make sure
cable is straight
Traction Control and Shift Lever
• To check the adjustment of the traction control and
shift lever, move the shift lever all the way forward
to sixth (6) position. With the traction control
released, push the snow thrower forward. The unit
should move forward freely. Then engage the
traction control grip. Wheels should stop turning.
• Now release the traction control grip, and push the
unit again.
• Move the shift lever back to the fast reverse
position, then all the way forward again. There
should be no resistance in the shift lever, and
wheels should keep turning.
• If you feel resistance when moving the shift lever
or the wheels stop when they should not, loosen
the jam nut on the traction control cable and
unthread the cable one turn. If the wheels do not
stop when you engage the traction control grip,
loosen the jam nut on the traction control cable and
thread the cable in one turn. Recheck the
adjustment and repeat as necessary. Tighten the
jam nut to secure the cable when correct
adjustment is reached.
6
Figure 5