Singer 270 - Singer Service Manual Machine Adjustments; I STOP MOTION ADJUSTMENTS; III FEED MECHANISM ADJUSTMENTS; VI SEWING MECHANISM ADJUSTMENTS

ADJUSTMENTS
The sequence of ad just ments ou tl in ed on thi s poge should be checked and
ma de in the o rd er given to ovoid confus i on ond unnecessary repetition.
I STOP MOTION ADJUSTMENTS
A. Arm Shaft
I. Adjust for end play
B. Storhng Lever
1. Se t clearance between i nlerlo cki ng arm and
machine p ul ley
2. Adjust arm stop
C. Engaging a rm
1. Adjust to obtain correct "V" belt tension
D. Tripping Linkage
1. Adjust r o<:k shaft suppo rt for binding
2. Set clearance between bell crank ard pawl
II KNIFE ACTUATING AND CL AMP LIFTING
ADJUSTMENTS
A. Safe ty Devices
1. Set Lilt ing A rm Lug
2. Ad just lifting lever pawl to cloor engaging
surface on lift ing lever
3. Set Clamp lifter stop
B. Ten sion Releo$er
1. Posttion tension regulator
2. Set lifting li,k connecloon
3. Set lihing arm to release tension
C. Work Camp Foot Lifter
1. Positio n lifter beneath arm hook
D. Thread Wiper
1. Set wiper support
2. Pos ition wiper wire
E. Thread Pu 11-off Loop
1. Adjust tension on spring
Ill FEED MECHANISM ADJUSTMENTS
A. Feed O.iving Gears
1. Check alignment of t1ming marks
2. El iminate play in gears
B. Feed Lin kage Adtustment
1. Center and position latera l feed linkage
2. ln ercose or decrease lotorol mov em ent of
f eed bar
3. Cente r and posuion long•tudinol feed link-
age
4. Increase or decrease longitudinal move·
ment of feed bar
C. Feed Timing Adjusrment
1. Time longitudinal feed movement
2. Ti me l ate r al feed movement
8
IV TRIPPING POINT$ ADJUSTMENT
A. Set timing to actuo1e •ntcrlodcing arm
V STOP MOTION BRAKE ADJUSTMEHn
A. Obtain brako clearance
B. Adjust broke prtssuro
VI SEWING MECHANISM ADJUSTMEI-ITS
A. Sewing Hook
1. Set longitudinal pasitton
2. Timehook
B. Nee<lle Bar
I. Set Needle Bar Height
VII REEL WI NDING ADJUSTMENTS
A. Winding Linkage
I. Adjust thread clomptng action
B. Reel Driver Tr pping Points
1. Set tripping point for "full pinch"
2. Adj ust Extension for durolton of pinch
C. Pre· T e"' sian
I. Adj•st to atd in reel winding
VIII THREAD STRIPPING AND RETRACTING
ADJUSTMENTS
A. Fi nger Pla te Fo ll ower
1. Set to actuate stripper finger
B. Sttipper finger
1. Adjust to remove unused reel thread
C. Retracting Finger
1. Adjust to pick up reel th r ead
D. Tension Releaser
1. Re-check
IX ADJUSTMENTS UNDER THROAT PLATE
A. Reel Holder Position Stop
B. Trimming Knives
I. Set movable and odtustablo knives
2. Time knives
3. Adjust k nife pressure
C. loop Pick-up Finger
1. Positi on operating lover
2. Set loop pick-up fingor