17
18
9
①
②
③
④
⑤
19. Adjusting the feed dog timing (Fig.17)
1. The standard position between the feed cam (left)
① and the feed cam (right) ②is shown in the Fig.
2. Open the upper cover③, and then adjust its position.
3. The feed dog (right) ② can be adjusted by removing
the rubber plug ④ on the upper cover. Under such
condition, be careful to protect the bevel gear ⑤ as
it is not easy to be found when adjusting.
The first screw The second screw The first screw
Stitch length dial
20. Adjusting the trimming device
Thread holding spring plate
Fixed knife
Movable knife
Driven crank
Solenoid
Solenoid base
Spring
Trimming cam
Left crank
Right crank
Spring
Tension release wire
1.Trimming mechanism (Fig. 18)
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