20
U421-I2A & U431-I2A OPERATOR’S MANUAL
513713 REV.0
Section 2: Operation
MAINTENANCE
PA
R
TS
TROUBLESHOO
TING
OPERA
TION
INTRODUCTION
I. Lubrication Points
O-Ring & Hex
End of Auger
O-Ring
ONLY Inside
Metal Adapter
Inside & Outside
of Bushing
All O-Rings*
* U431 spigot bodies shown, U421 has only one spigot