B100 bushing
1" main
shaft
Ring gear
Drive arm
5/8" worm gear shaft
O-Rings for
5/8" shaft
Gear box casting
Worm gear
Gasket
Thrust bearing
Thrust bearing
Spacer
Races
Races
5/8" bushings
(2)
Tapered
pin
5/8" seal for
worm shaft
O-Ring
for 1" shaft
B100 casting
for the M81 and M98
B100-888 casting
for the M888
M888
Complete
M81
Complete
Gear box cover
1" seal
for main
shaft
MyTana’s Gear Box Breakout for M81, M888, M98
012622
To check the oil level in the gearbox:
1. Remove the bolt on
the left side of
the gearbox.
The oil level
should be up
to the level
of this hole.
2. To add oil, remove
the bolt at the top of
the gearbox and add
more in that opening.
Add only enough
until it comes out
the side opening.
Don’t ll higher than
this level.
MyTana uses a 140 wt. hypoid gear lube (AGMA ISO 460 EP Industrial gear oil)
Gearbox on M81
(800) 328-8170
Factory Direct Customer Service
M –F 7am – 5pm CST
Competent • Polite • Clear
www.MyTana.com
746 Selby Ave • St. Paul, MN 55104
fax: 651.222.1739