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Need help?Do you have a question about the Merrow 70-D3B and is the answer not in the manual?
Details the necessary information for ordering replacement parts, including style and part name.
Guides on removing from box, checking threading, securing to table, and setting up thread stand.
Explains how oil is metered and fed to bearing surfaces, and how to refill the reservoir.
Details the steps for draining oil from the machine, including screw location.
Describes how the Upper Shaft Pump ensures continuous oil flow to various parts.
Explains oil supply to looper carrier assemblies and cam roll bearings via F.C. Oil Feeder Tube.
Details the oil flow to the Lower Shaft through its designated oil meter holder.
Discusses available oil meter grades and factory selection for lubrication.
Recommends maintaining oil level, cleaning lint, and cleaning the oil filler assembly screen.
Lists the sizes of self-setting needles available for Class 70 machines.
Instructions on setting the needle into the needle carrier and tightening the clamp nut.
Describes how to adjust the needle carrier assembly for free swing without lateral movement.
Explains the need for upper and lower loopers to co-operate with the needle for proper sewing.
Step-by-step instructions for setting and adjusting the lower looper, including contact points.
Guides on setting the upper looper, ensuring it clears the needle and lower looper.
Advises following the provided threading diagram and obtaining duplicates if needed.
Explains how cutter positioning determines seam width (butt, gap, lap seams).
Details setting the lower cutter edge slightly above the needle plate surface.
Describes adjusting the upper cutter's lowest position relative to the lower cutter.
Recommends using a Cutter Grinder with a jig or sending dull cutters for sharpening.
Discusses feed dog teeth types and general low setting recommendations.
Explains the differential or gathering feed mechanism, including front and rear feed dog travel.
Details how to tilt the feed mechanism for fabric adjustment using a set screw.
Steps for removing work plate support, needle plate, and feed dogs.
Instructions for removing the machine base and the entire feed assembly.
Explains how to adjust feed stroke for stitch length variations using feed eccentric and lever.
Describes using stop screws to control maximum and minimum stitches per selvage/seam.
Instructions for tilting the presser foot to accommodate different fabrics.
Guides on positioning the presser foot finger relative to the needle plate slot.
Explains adjusting presser foot pressure using a specific screw.
General| Brand | Merrow |
|---|---|
| Model | 70-D3B |
| Category | Sewing Machine |
| Language | English |
