Janome JF1018S, Руководство по обслуживанию

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13
CLEARANCE BETWEEN NEEDLE AND HOOK (NO.2)
Use this adjustment No.2 when adjustment No.1 can not be used.
Correct setting
The clearance between needle and shuttle race should be 0 - 0.15mm.
To adjust
1. Set the pattern selector dial at “B”. (stitch length dial at any position.)
2. Loosen the screw A on lower shaft bushing and slide the gear about 0.5mm to the right
to make a slack between gears.
3. Lower the needle and loosen the two set screws B.
Move the shuttle race unit axially either forward or backward to adjust the clearance
between the needle and the shuttle race in the range of 0-0.15mm.
4. Set the pattern select dial at” C “, and turn the balance wheel to check if the Clearance
between the needle and inner edges of the shuttle race spring at the left and right
needle drops are equal. If not, adjust it by turning the shuttle race unit.
5. Tighten the two set screws B.
6. Loosen the set screw on lower shaft bushing and slide the gear back to the original
position while adjusting the backlash.
7. Tighten the screws a firmly.
8. Attach the rear cover.
Note: The backlash play should be less than 0.3mm and lower shaft turns smoothly.
After the adjustment, check the hook timing.