Service - MTD 800 series Operator's Manual

Service

WARNING!
Before servicing,
repairing or inspecting the snow
thrower, disengage the auger
control lever. Stop the engine and
remove the safety key to prevent
unintended starting.
Maintenance
Engine
Refer to Engine Operator's Manual.
Tire Pressure
Refer to Assembly & Set-up section (page 6) for
information regarding tire pressure.
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.
NOTE: Some units are equipped with reversible
skid shoes and may be turned over to increase
their lifespan.
To remove skid shoes (Deluxe shown):
1. Remove four carriage bolts (a) and hex
flange nuts (b) and flat washers (c) which
secure them to the unit.
2. Rotate and reassemble new skid shoes
with four carriage bolts (a) (two on each
side) and hex flange nuts (b) and flat
washers (c). Refer to Figure 4-1.
(a)
(a)
(c)
NOTE: Augers not shown for clarity
Figure 4-1
To remove shave plate:
1. Allow the engine to run until it is out of
fuel. Do not attempt to pour fuel from the
engine.
2. Carefully pivot unit up and forward so that
it rests on the auger housing.
3. Remove carriage bolts (a) and hex
nuts (b) which attach it to auger housing.
See Figure 4-2.
4. Reassemble new shave plate, making sure
heads of carriage bolts are to the inside of
housing. Tighten securely.
See Figure 4-2.
18
(a)
(b)
NOTE:
The shave plate on select units (shown
in Figure 4-3) have a wear edge that can be
adjusted forward to prolong its life. As the shave
plate wears, it can be moved into a second
position.
To move adjustable shave plate (if equipped):
1. Allow engine to run until it is out of fuel.
Do not attempt to pour fuel from the
engine.
2. Carefully pivot unit up and forward so that
it rests on auger housing.
3. Loosen rear skid shoe bolts (a) on both
sides of equipment housing and remove
carriage bolts and hex nuts which attach
shave plate to auger housing.
See Figure 4-3.
4. Slide shave plate downward into second
position. Reinstall and tighten all bolts
securely. See Figure 4-3.
(a)
(c)
(b)
(b)
Lubrication
Gear Shaft (If Equipped)
The gear (hex) shaft should be lubricated at least
once a season or after every twenty-five (25)
hours of operation.
1. Allow engine to run until it is out of fuel.
2. Carefully pivot unit up and forward so that
it rests on auger housing.
3. Remove frame cover from underside of
unit by removing self-tapping screws (a)
which secure it. Refer to Figure 4-4.
Figure 4-2
(a)
Figure 4-3
(a)
(a)
(a)
(a)
Figure 4-4
4. Apply a light coating of Bostik Regular
Grade Never-Seez® to hex shaft.
See Figure 4-5.
Figure 4-5
NOTE:
When lubricating hex shaft, be careful
not to get any lubricant on aluminum drive plate
or rubber friction wheel. Doing so will hinder
unit's drive system. Wipe off any excess or spilled
lubricant .
Wheels
At least once a season, remove both wheels.
Clean and coat axles with a multipurpose
automotive grease before reinstalling wheels.
Side Chute Crank Control (If Equipped)
Once a season, lubricate eye-bolt bushing and
the spiral with 3-in-1 oil.
Auger Shaft
At least once a season, remove shear pins (a)
and cotter pins (b) from auger shaft(s). Spray
lubricant inside shaft and around spacers and
flange bearings found at either end of shaft(s).
See Figure 4-6.
4