
GHE-1207 Service Manual
12
10. Tension of Bobbin case
Tool:
Tension meter and small flathead screwdriver.
Standard:
Tension range is 15
~
18g.
Check:
A
. Open needle plate, and take bobbin case off.
B.
Threading with meter to check (see figure)
Adjustment:
A.
When tension is too tight use small flathead screwdriver to turn the regulating screw (A) counter-
clockwise until standard tension value.
B.
When tension is too loose use small flathead screwdriver to turn the regulating screw (A) clockwise until
standard tension value.
C.
Install needle plate and bobbin case when regulating is finished.
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