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BAS-311E.311EL.326E.326EL
Chapter 3. Assembly
9. Lower shaft mechanism (1)
1. Tilt the machine head until it stops.
2. Insert the rock gear shaft q from the rear of the machine, pass the rock gear w, the set screw collar e over the shaft,
bring them close together without any clearance, and tighten the set screw r.
3. Insert the lower shaft t from the rear of the machine, pass the set screw collar y over it, and engage the lower shaft
gear u with the rock gear w.
4. Sandwich the lower shaft bush i between the lower shaft gear u and the set screw collar y without any clearance,
and tighten the set screw o.
5. Fit the retaining ring !0 on the lower shaft t, press the driver !1 against the retaining ring !0, and tighten the bolt !2.
6. Return the machine head to its original position.
7. Fit the crank rod !3 over the crank of the upper shaft !4, align the matching mark of the crank rod !3 with that of the
upper shaft !4, and tighten the screw !5.
8. Tilt the machine head until it stops.
9. Turn the pulley !6 to move the rock gear w right and left until the pulley rotates easily. Turn the rock gear shaft q to
allow 0.05 - 0.12 mm play of the driver !1. Then tighten the set screw !7.
10.Return the machine head to its original position.
!2
e
w
r
q
o
!0
!1
y
t
!4
!3
!6
!5
w
q
!7
!1
0.05 - 0.12mm
i
u
!3
Matching mark
u
!3
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