10
Theamountofascendingtraveloftheneedlebarfromitslowestpositiontotheposition()wherethetipof
therotaryhookexactlymeetstherightsideoftheneedleshouldbe3.25to3.55mm.
1.Removetheneedleplateandbobbinholder.
2.Turnthepowerswitchon.
3.Selectthepattern(leftposition).Setthezigzagwidthat0.
4.Removethefree-armcover.(Seepage5.)
Turnthehandwheeltowardyoutolowertheneedleatitslowestposition.
5.Loosenthehexagonalsocketscreww(2pcs.).
6.Movetheneedlebar3.4mmfromthelowestposition.
7. Turnthelowershaftgearuntilthetipofhookmeetstherightsideoftheneedlewhileholdingthehandwheel.
8.Tightenthehexagonalsocketscreww(2pcs.).
9.Attachthefree-armcover,bobbinholderandneedleplate.
MECHANICAL ADJUSTMENT
ADJUSTMENT OF HOOK TIMING
w
Needle plate
Bobbinholder
w
Lowershaftgear
Leftposition()
(#14)
Tipofhookmeetsthe
rightsideoftheneedle
Lowest needle position
3.25 – 3.55 mm