Chapter 9 Maintenance
BES-940BC
Lubricate the following part indicated by the arrow ("clearance" between the connecting rod
and the needle thread take-up bearing) once a week.
(Note) • In lubrication, select needle bar 9 and remove arm cover L to check the lubrication area. Be sure to wipe
off excessive oil spilt at the lower part of the arm.
Connecting rod
BES-1240BC
Lubricate the following part indicated by the arrow ("clearance" between the connecting rod
and the needle thread take-up bearing) once a week.
(Note) • In lubrication, select needle bar 12 and remove the head cover to check the lubrication area. Be sure to
wipe off excessive oil spilt at the lower part of the arm.
Connecting rod
226
Thread take-up bush
Arm cover L
Thread take-up bush
head cover
BES-940BC • BES-1240BC
Connecting
rod
Connecting
rod