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Service Manual
SEC.8-6
Needle threader height (6)
9. If twin thread guide (H) is located much higher or lower than hook portion,
needle is not threaded.
After checking hook position, adjust position of outer pipe (J) so that there may
be a clearance 0.4 to 0.6 mm between screw (K) and bottom of long hole.
J
Position of twin thread guide and hook is shown below with threading lever lowered.
Hook
K
Original issue
Page 28／64
Model
0.4 to 0.6mm
Thread guide is locates too low.
It is located correctly.
It is located too high.
May 2014
XL-420
| 28
0.4 to 0.6 mm
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