How to install a Bobbin, oiling and keep the thread from jamming on a 4420 two Needle Walking Foot.

We sell and stock these machines.
Danny
DH Sewing Machines
6150 NE 4 Court
Miami, FL 33137
305-759-9775 Business
786-763-0759 texting
[e-mail]
www.dhsewing.com
FEATURES
• DOUBLE NEEDLE
• Large Vertical Axis Automatically Oiled Hooks
• Oil Pump System with Adjustable Oil Flow
• Upper Oil Glass Sight
• Barrel-type, Locking Stitch Regulator
• Reverse
• Large Top-Loaded Bobbins
• Safety Clutch
• Locking Slide Plate for easy bobbin access.
• Adjustable Take-Up Thread Guide for thread loop timing
• Quick Tension Release
SPECIFICATIONS
• Speed, Max. (S.P.M.): 2600 *Speed depends on thread, material and operation.
• Presser Foot Lift: By Hand- 5/16" (8 mm) / By Knee- 33/64" (13 mm)
• Needle Bar Stroke: 1-27/64" (36 mm)
• Stitch Length, Max: 2.8 s.p.i. (9 mm)
• Work Space: 9-7/8” x 3-15/16" (250 x 100 mm)
• Needles: 135 x 17 (x 2)
• Pre-wound Bobbin: U or S