Yard-Man 31AE993J401 Benutzerhandbuch

12

warranty, operator must maintain the snow thrower 
as instructed in this manual.

•

Some adjustments will have to be made 
periodically to maintain your unit properly. 

•

All adjustments in the service and adjustments 
sections of this manual should be checked at least 
once each season.

•

Follow the maintenance schedule given below.

•

Periodically check all fasteners and hardware to 
make sure these are tight.

Minor carburetor adjustments may be required to 
compensate for differences in fuel temperature, altitude 
and load. Refer to the engine manual for instructions.

Lubricate the gear shaft with 6-in-1 grease (part 
number 737-0170) at least once a season, or after 
every 25 hours of operation.

 

Refer to Figure 10.

  Keep all grease and oil off the rubber 

friction wheel and drive plate.

Refer to the separate engine manual packed with your
unit for all engine lubrication instructions.

•

At least once a season, remove the shear bolts 
from the auger shaft and spray lubricant inside the 
shaft. See Figure 12.

The base of the discharge chute and the spirals on the 
chute crank should be lubricated at least every 25 
hours of use. Apply the lubricant under the base of the 
chute and where the spirals contact the discharge 
chute. See Figure 13.

At least once a season or after every 25 hours of 
operation, remove rear cover. Lubricate any chains, 
sprockets, gears, bearings, shafts, and the 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. 

The gear case is lubricated with grease at the factory 
and it 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. See Figure 12.

 Do not overfill the gear case, since 

damage to the seals could result. Be sure the vent plug 
is free of grease in order to relieve pressure.   

Every season lubricate the auger bearings and the 
bearings on the side of the frame with light oil. See to 
Figure 12.

Use oil or spray lubricant into the bearings at the 
wheels at least once a season. Remove the wheels, 
one side at a time, and clean and coat axles with multi-
purpose automotive grease.

Lubricate the auger shaft at least once a season. To do 
this:

•

Remove the shear bolts on the auger shaft. 

•

Oil or spray lubricant inside shaft. 

•

Carefully spin the auger around by hand to 
disperse the lubricant.

•

Reinstall the shear bolts.