20
Maintenance
Shear Pin Replacement
The auger is attached to the spiral shaft with shear pins
secured with cotter pins. If the auger should strike a foreign
object or ice jam, the snow blower is designed to shear off
those pins (see Figure 15). If the auger will not rotate, check if
the pins have been sheared. When replacing shear pins, spray
an oil lubricant into the shaft before inserting new pins.
Shave Plate and Skid Shoes
The shave plate and skid shoes on the bottom of the
snow blower are subject to wear. They should be checked
periodically and replaced when necessary.
To remove skid shoes:
1. Remove the four carriage bolts and hex flange nuts which
secure them to the snow blower (see Figure 16).
2. Reassemble new skid shoes with the four carriage bolts
(two on each side) and hex flange nuts.
To remove shave plate:
1. Remove the carriage bolts and hex nuts which attach it to
the snow blower housing (see Figure 16).
2. Reassemble new shave plate, making sure heads of carriage
bolts are to the inside of housing. Tighten securely.
Figure 16
SKID
SHOE
SHAVE
PLATE
Figure 15
SHEAR
PIN
COTTER
PIN
