Walker IMPLEMENT HITCH SB6670 - Manual (Page 45)

Maintenance Instructions
LUBRICATION
45
Two-Stage Snowblower Gearbox
The gearbox is permanently lubricated (oil filled) and
sealed requiring no scheduled lubrication. However,
the gearbox oil seal(s) should be checked every 25
hours for indication of an oil leak. If an oil leak is
noted, replace the oil seal(s) and relubricate the
gear-box as follows:
1. Remove the gearbox following the procedure
described in REPLACING/REPAIRING the
Two-Stage Snowblower Gearbox in this sec-
tion.
Snowblower Lubricant Plug Location
2. Clean the area around the lubricant plug locat-
ed on the front of the gearbox.
3. Remove the lubricant plug on the gearbox.
4. If the lubricant is flowing out of the plug hole, the
gearbox is full. Reinsert the plug. If no lubricant
flows out, add SAE E.P. (Extreme Pressure)
90W lubricant into the gearbox through the plug
hole until it starts to flow out.
5. Wipe the threads of the gearbox plug before re-
installing.
6. Torque to 24 in-lb (2.7 N·m).
NOTE: In case the gearbox is completely
drained of oil, approximately 5 fl. oz. (15 cl) of oil
is required to refill the gearbox.
Two-Stage Snowblower Reduction Chain
Lubricate the reduction chain every 25 hours. A light
penetrating oil or special purpose chain oil is recom-
mended. Lubricate the reduction chain as follows:
1. Remove the bolt fastening the reduction box
cover to the reduction box and remove the cover.
Remove Reduction Box Cover
2. Apply oil to the reduction chain.
3. Adjust the chain if necessary. Refer to AD-
JUSTMENTS of Two-Stage Snowblower Re-
duction Chain Tension in this section.
4. Reinstall the reduction box cover by reversing
the removal procedures.
Grease Fitting and Oil Point Lubrication
Lubricate the grease fittings and oil points after ev-
ery 25 hours of operation. Use SAE general pur-
pose lithium or molybdenum base grease for grease
fittings and light machine oil (SAE 10) to lubricate oil
points. Lubricate the locations shown in the Lu-
brication Points illustrations on the following
pages.
Lubricant
Plug
Reduction
Chain