MTD E740F - Manual (Page 15)

15
Gear Case
The gear case is lubricated with grease at the factory
and does not require checking. If disassembled for any
reason, lubricate with 2 ounces of Shell Alvania grease
EPR00, part number 737-0168. Before reassembling,
remove old sealant and apply new sealant.
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.
Engine
Refer to the separate engine manual packed with your
unit for all engine lubrication instructions.
SECTION 8: SERVICING YOUR SNOW THROWER
WARNING: Before servicing, repairing, or
inspecting, disengage all clutch levers and
stop engine. Wait until all moving parts
have come to a complete stop. Disconnect
spark plug wire and ground it against the
engine to prevent unintended starting.
Engine
Refer to the separate engine manual packed with your
unit for all engine maintenance procedures.
Augers
• The augers are secured to the spiral shaft with two
shear bolts and hex lock nuts. If you hit a hard
foreign object or ice jam, the snow thrower is
designed so that the bolts may shear.
Refer to Figure 18.
• If the augers will not turn, check to see if the bolts
have sheared. Replacement shear bolts and hex
lock nuts have been provided with the snow
thrower. When replacing bolts, spray an oil
lubricant into shaft before inserting new bolts.
IMPORTANT: NEVER replace the auger shear bolts with
standard hex bolts. Any damage to the auger gearbox
or other components as a result of doing so will NOT be
covered by your snow thrower’s warranty.
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.
• Reassemble new skid shoes with the six carriage
bolts, bell washers (cupped side goes against skid
shoes) and hex nuts. Make certain the skid shoes
are adjusted to be level.
To remove shave plate, remove the carriage bolts, bell
washers, and hex nuts which attach it to the snow
thrower housing. Reassemble new shave plate, making
sure heads of the carriage bolts are to the inside of the
housing. Tighten securely.
Belt Removal And Replacement
Auger Belts
• Remove the plastic belt cover by removing the two
self-tapping screws. See Figure 19.
• Drain the gasoline from the snow thrower.
• Tip the snow thrower up and forward so that it rests
on its auger housing.
Figure 19
• Remove the six self-tapping screws from the frame
cover underneath the snow thrower.
• Roll the front and rear auger belts off the engine
pulley. See Figure 20.
Figure 20
Self-Tapping
Screw
Belt Cover
Auger
Pulley
Drive
Pulley
Drive
Belt
Idler
Pulley Idler
Pulley
Auger
Belts
Frame