20
SERVICE AND ADJUSTMENTS
CAUTION
:
Before servicing or adjusting
the snow thrower, shut off the engine, remove
the spark plug wire(s), set the parking brake
and remove the key from the tractor ignition.
FIGURE 34
FIGURE 33
REPLACING AUGER BELT
• Disengage the tractor's attachment clutch.
• Lower the snow thrower to the ground.
• Release the spring tension from the auger belt idler
arm on the bottom of the clutch/idler assembly.
• Remove the auger drive belt from the clutch/idler
assembly and from the spiral auger housing.
• Install new belt over top of large auger drive pulley
and under the two side idler pulleys. Twist the belt 1/4
turn to seat the "V" of the belt in the groove of each
idler pulley. Refer to figure 29 on page 16.
• Assemble the belt onto the clutch/idler assembly.
ADJUSTING SKID SHOES
• The skid shoes regulate the distance between the
scraper plate and the plowing surface. When removing
snow from a gravel driveway or and uneven surface,
keep the scraper plate as high above the surface as
possible to prevent possible damage to the spiral
auger. On a blacktop or concrete surface, keep the
scraper plate as close to the surface as possible.
• To adjust the skid shoes, raise the snow thrower off
the ground and place a block under each end of the
scraper plate. Loosen the six hex nuts securing the
skid shoes to the housing. Adjust the skid shoes up or
down and retighten the nuts securely. Adjust both skid
shoes to the same height to keep the housing and the
scraper plate level. See figure 33.
SPIRAL AUGERS
• The spiral augers are secured to the auger shaft
with two shear bolts and nylock nuts. The bolts are
designed to shear if an object or ice jams the augers.
• If the augers will not turn, check to see if the shear
bolts have sheared. See figure 34. Two replacement
shear bolts and nylock nuts have been provided with
the snow thrower. For future use order part number
710-0890A shear bolt and number 47810 nylock nut.
SKID SHOE
SCRAPER PLATE
SHEAR BOLT AND
HEX LOCK NUT
GEAR HOUSING
ADJUSTING LIFT HEIGHT, LEVELING
The snow thrower is equipped with two threaded lift
links for adjusting the lift height and leveling of the snow
thrower in the raised position.
TO ADJUST THE LIFT HEIGHT:
• Raise the snow thrower to the highest position.
• Check the clearance between the rear of the idler
bracket (item 24, page 22) and the lift shaft assembly
(item 1, page 24). A minimum 1/16" clearance in the
raised position is necessary to avoid possible damage
to the lift system.
• To increase the lift height, tighten the nuts on the
bottom of both lift links equally until the maximum
lift height is obtained. The maximum lift height is
approximately 4 inches ground clearance for GT
tractors and 3 inches for YT tractors.
TO LEVEL WHEN RAISED:
• To keep the snow thrower level in the raised position,
loosen the nut at the bottom of the lift link on the
high side of the snow thrower until the snow thrower
is approximately level. It is not critical that the snow
thrower be exactly level in the raised position, it will
level out when it is lowered to the ground.
