Chapter 9 Maintenance
BES-940BC • BES-1240BC
227
3. Greasing
To extend the machine's service life, supply grease to the following places at regular intervals.
(Note) • When greasing, be sure to use the grease tank BR2 (black) provided with the machine.
• For overhauling, contact your distributor or refer it to trained experts.
3-1 Head
Grease two places indicated by the arrow once a month.
i
o
!0
r
BES-940BC
1. Remove two connectors from the rear of
the needle bar case.
2. Loosen four bolts q, and remove the
needle case w.
3. Loosen three screws e, and remove the
presser foot guide plate r.
4. Loosen two bolts t, and remove the arm
cover L y.
5. Grease all the grooves of the thread take-
up cam u and the work clamp cam i.
6. After greasing, assemble in the reverse
order.
(Note) • When assembling the needle bar case w,
place it on the machine and turn the change
pulley !0 behind the cover o at right. Check
that it is engaged, and then tighten the bolts.
• When attaching the presser foot guide plate
r, move the presser foot up and down by
the retracting lever to check that is it not
distorted.
w
u
w
q
r
y
q
t
e
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