MTD 615 - Manual (Page 15)

15
WARNING: When following instructions in
separate engine manual for draining oil, be
sure to protect frame to avoid oil dripping onto
transmission parts.
Gear Shaft
• Lubricate the gear shaft with a good all-weather
multi-purpose light grease at least once a season or
after every 25 hours of operation.
Gear Case
• The worm gear case has been filled with grease at
the factory. If disassembled for any reason,
lubricate with 1-1/2 ounces of shell grease, part
number 737-0168.
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.
Wheels
• Oil or spray lubricant into bearings at wheels at
least once a season. Pull klick pin, remove wheels,
clean and coat axles with a multipurpose
automotive grease. See Figure 18.
Figure 18
Chute Directional Control
• The worm gear on the chute directional control
should be greased with multipurpose automotive
grease.
Auger Shaft
• At least once a season, remove shear bolts on
auger shaft. Oil or spray lubricant inside shaft and
lubricate the auger bearings. See Figure 19.
Figure 19
IMPORTANT: Keep all grease and oil off friction wheel
and drive plate.
Drive and Shifting Mechanism
• Remove rear cover. Oil 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.
Friction Wheel
The rubber on the friction wheel is subject to wear and
should be checked after 25 hours of operation, and
periodically thereafter. Replace the friction wheel
rubber if any signs of wear or cracking are found. Refer
to the Friction Wheel Rubber in the SERVICE section.
SECTION 7: 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.
• 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’s hardware pack. For future use, order part
number 710-0890A (shear bolt 5/16-18 x 1.5”) and
712-0429 (hex lock nut 5/16-18).
Klick Pin
Axle
Vent Plug
Plastic
Bearing Plastic
Bearing
Shear Bolts