MTD H660G Benutzerhandbuch

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Both Wheels Driving: Insert the click pin through 
the hole in the hub of the rim and the inside hole on 
the snow thrower’s right axle. This position is good 
for heavy snow as there is power drive in both 
wheels.
IMPORTANT:
 Never operate the snow thrower with the 
click pin inserted through both the rim and the outside 
hole in the axle. Doing so can result in serious damage 
to the drive system.
SECTION 6:  MAINTAINING 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.
Lubrication
Engine
Refer to the engine manual for maintenance 
procedures and instructions.
WARNING: 
When following instructions in
the 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. 
IMPORTANT:
 Keep all grease and oil off friction wheel 
and drive plate.
Gear Case
The auger gearbox has been filled with grease at 
the factory. If disassembled for repairs, lubricate 
with 1-1/2 ounces of grease, part no. 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 least once a 
season. Pull the klick pins and remove wheels, 
clean and coat axles with a multipurpose 
automotive grease. See Figure 16.
Figure 16
Auger Shaft
At least once a season, remove shear bolts on 
auger shaft. Oil or spray lubricant inside shaft. 
Also lubricate the auger bearings at least once a 
season. See Figure 17.
Figure 17
Chute Directional Control
The worm gear on the chute directional control 
should be greased with multipurpose automotive 
grease.
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. See Figure 18.
Figure 18
Klick Pin
Axle
Shear Bolts
Bearings
Bearings
Chain
Shift Lever
Gear Shaft
Avoid oil on 
friction wheel and 
drive plate