Bonis A-16, -18, -21

MAIN FRAME ASSEMBLY

Part No.

Description

1-A 18-F 18-FB. 18-FFB. 18-R 19. 21 22 24. 29-BT. 30-BT 105 107. 107-B.

Mainframe Front Feed Disc (Sold only as com~ete unit)

Front Feed Disc with Ball Bealings (Sold only as acomplete 1.mrt) Flat Front Feed Discwith Ball Bearings (Sold only as acomplete un~) Rear Feed DISC Feed Disc Arm, Complete w1th Pins Pressure Lever Pressure Lever Chain Belt Wheel (For "-AD" Models there 1s also a Be~ Wheel, Part No. 24-A, on left side)

Main Shaft Bushing, Long, (Right Side) Ma1n ShafiBushlflQ, Short, (lef1S1de) Main Shaft {For·'-RD" Models rt is Part No. 105-R) Disc Stud Front Disc Stud !Of Ball Bearings Top Arm Pin BottomArm Pin Needle BarTens1on Post NeedleGuard Work Guide (installed on Model A-16 only) Tension Disc, 2req'd TopCoverTens1on Spnng

108-A 108-B 116 121-A 127 129 133 157 . 158 201-L 201-S 202 . 203 206 213 221 224 226 230 245 . 246 247 248 249 250 259 .

Pressure lever Spring Pressure Lever Shaft

Feed Gear Shaft Screw, 2req'd Feed GearShaf!Screw, 2req'd Rear Feed Disc SetScrew, 2req'd Belt Wheel Screw, 2pes. req'd Ann P1nch Screw Tension Post Front Cover Screws, 2 req'd Feed Shaft Nut, 2req'd Tens1onNut Work Guide Set Screw Shielded Ball Bearing, 2req'd D1scBearing Rollers, 12req'd Spacer Tension Post Set Screw Th1ckSpacer Pressure AdJusting Nut Pressure Ad1ust1ng Screw Top Cover Hinge Screw, 6 req'd Oil Cup, 2req'd Feed Gear Plate Screw Top Cover Lock Spring Top Cover Hinge, 2req'd Top Cover Hinge Stop, 2req'd

405 409 426 610 611 612

NeedleGuard Screw Needle Bar Bush1ng Adjustable Seam Contrul Guide tor Aal Feed IJB:s Adjustable SeamControl Guide Onstaled on ModelsA-21 &A-18on,) Front Cover OilerTop Cover Oil Filler Cap Top Cover Thread Guide

614 . 617-A 621-F 621-J

704 903 908 928

'Spec1fy Model number- All A machines have 32 teeth per inch. Wheel thickness vanes: A-21 3/64" A-16 3/32" A-18 i/16"

From the Library of Superior Sewing Machine & Supply LLC