18
MECHANICAL ADJUSTMENT
STRETCH STITCH FEED BALANCE
When a stretch pattern is sewn with the feed balancing dial set at the standard setting mark '' '', the pattern should
be as indicated with the '' '' mark in the figure below. (If the stitch feed is not balanced, adjust it as follows:
1. Set the machine to the adjustment mode (See illustration below).
2. Set the slit of the feed balancing dial at the standard setting mark '' '' on the front cover.
3. Enter the adjusting mode. Sew the stitch pattern "8" until the machine stop automatically, and check the stitch
length.
* Standard length of five "8" characters: 32 mm to 40 mm
4. Remove the base cap.
5. If the length is too short, turn the adjusting screw in the direction of "D".
6. If the length is too long, turn the adjusting screw in the direction of "C".
7. Attach the base cap.
(Enter the adjustment mode)
Turn the power switch on while
pressing the reverse button.
Press the ring button (left) mark.
The LCD display indicates "01".
Press the ring button (up) mark
indicate "08".
32-40mm
C
D
Adjusting screw
Feed balancing dial
Standard setting mark
Base cap
Press the ring button (right) mark
indicate "88".
Summary of Contents for NH40
Page 1: ...SERVICE MANUAL MODEL NH40...
