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 37
FIGURE 36
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 31 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 36.
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 37. Two replacement
shear bolts and nylock nuts have been provided with
the snow thrower. For future use order part number
42849 shear bolt and number 47810 nylock nut.
SKID SHOE
SCRAPER PLATE
SHEAR BOLT AND
HEX LOCK NUT
GEAR HOUSING
ADJUSTING LIFT HEIGHT
(Refer to figure 34 on page 17.)
• 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 top
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.
LEVELLING SNOW THROWER
(Refer to figure 34 on page 17.)
• To make the snow thrower level when it is in the
raised position, adjust the nut on the top of the lift
link on one 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.
ADJUSTING WINCH LIMIT
SWITCH
(Refer to figure 30 on page 16)
If the winch does not shut off when the snow thrower is
lowered to the ground, adjust the hex bolt located on the
front of the lift stop bracket.
• First, raise the snow thrower to the highest position in
order to gain better access to the bolt.
• Move one or more of the washers found under the
nylock nut to the inside of the bracket, placing them
under the head of the bolt. This will allow the bolt head
to make firmer contact with the switch.
• Lower the snow thrower to the ground to verify that
the winch now shuts off.
