MTD Snow Boss 550 - Manual (Page 12)

12
Wheels
• Oil or spray lubricant into plastic wheel bearings
inside the wheel hubs at least once a season.
Remove wheels, clean and coat axles with a multi-
purpose automotive grease. See Figure 13.
Figure 13
Auger Shaft
• At least once a season, remove the shear bolts on
the auger shaft. Oil or spray lubricant inside and on
the plastic bearings on the shaft. See Figure 14.
Figure 14
Drive and Shifting Mechanism
At least once a season or after every 25 hours of
operation, remove rear cover. Lubricate any chains,
sprockets, gears, bearings, shafts, and shifting
mechanism at least once a season. Use engine oil or a
spray lubricant. Avoid getting oil on rubber friction
wheel and aluminum drive plate. Refer to Figure 10.
Chute Directional Control
The spiral on the end of the chute directional control
and the base of the discharge chute itself should be
lubed with multi-purpose automotive grease once a
season. See Figure 15.
Figure 15
Gear Case
The gear case is equipped with a grease fitting on the
left housing and should be lubricated with Shell Alvania
grease EPR00, part number 737-0168 every 25 hours.
See Figure 16.
Figure 16
IMPORTANT: Do not overfill the gear case. Damage to
the seals could result. Be sure the vent plug is free of
grease in order to relieve pressure.
SECTION 8: SERVICE
WARNING: Disconnect the spark plug wire
and ground against the engine before
performing any repairs or maintenance.
Engine
Refer to the separate engine manual packed with your
unit for all engine related maintenance procedures.
Shave Plate and Skid Shoes
The shave plate and skid shoes on the bottom of the
snow thrower are subject to wear. They should be
checked periodically and replaced when necessary. To
remove the skid shoes, proceed as follows:
• Remove the six carriage bolts, bell washers and
hex nuts which attach them to the snow thrower.
Axle
Oil or use Spray Lubricant
Click Pin
Plastic Bearings
Shear Bolts
Lube Spiral
and Chute Base
Lube Fitting
Vent Plug