Cub Cadet 300 Series - Manual (Page 9)

Maintenance
5
Proper maintenance and storage key factors in keeping outdoor power equipment dependable. Encourage your
customers to bring snow equipment in for service and storage preparation at the end of each winter. Attending to
their snow throwers maintenance in the early spring will bring-in some pre-season work and prevent the barrage of
anxious phone calls when there is 8” of snow in their driveway.
Allow the engine to cool, and drain the fuel and oil from it before starting any mainte-
nance or service procedures.
Engine maintenance
All maintenance related material for the engine is covered in our horizontal shaft engine manual # 769-04015.
Save engine storage preparation for last.
Auger / impeller maintenance
1. Inspect the augers for bending or damage.
2. Inspect each shear pin;
2a. It is possible for a pin to be sheared, with one end stuck
in place. Check both ends. Wiggle the auger to con-
firm that the shear pin is intact.
2b. Make sure that the shear pins have not ben replaced
with standard clevis pins or nuts and bolts.
2c. Use only the correct OEM shear pins.
NOTE: Shear pins help prevent damage to the auger trans-
mission if the augers hit a solid object hidden in the snow.
NOTE: If a shear pin breaks, the unique design of the
augers on current MTD snow throwers allows the next
auger over to continue driving the one with the broken shear pin. It is possible for a customer to continue
clearing snow without noticing a damaged shear pin, but it will double the forces on the next shear pin.
NOTE: The auger gear box is sealed and filled with grease at the factory and should not require any mainte-
nance or service.
3. Wiggle the auger shaft to check the shaft-end bearings in the auger housing. Replace the bearings if they are
worn.
4. Check the auger drive transmission for any obvious damage. It is sealed a sealed unit, serviced by replace-
ment of the complete transmission and auger shaft assembly.
5. Inspect the impeller;
5a. Wiggle the impeller to confirm that the roll pins that transfer drive from the input shaft are intact.
5b. The impeller should wiggle slightly, confirming that there are no foreign objects jammed behind the impel-
ler.
NOTE: The typical customer complaint will be that the augers turn, but the snow just oozes out of the dis-
charge chute.
Figure 2.1
Shear Pins
CHAPTER 2: MAINTENANCE
! CAUTION ! CAUTION