Merrow MG Series User manual

INSTRUCTIONS
FOR SETTING UP AND OPERATING
MERROW
CLASS MG and CLASS M
Machines
-y
m
m.
^
From the library of: Superior Sewing Machine & Supply LLC

INTRODUCTION
This book is published for the guidance of those persons responsible for the operation
and maintenance of Merrow Class MG and MOverseaming, Overedging, and Hemming
Machines. It
contains diagrams and descriptive information concerning the most common
adjustments necessary to assure maximum production of the highest quality. For individual
problems consult your
nearest Merrow Distributor. Drawings inthis book are shown without
the needle guard for clarity. NOTE: The machine should not be operated without a needle
guard. Parts and screws shown are common to Class MG and Mmachines. For a more
complete reference
use the "Descriptive List of Parts for Merrow Class MG and Class M
Machines".
The Merrow Class MG and Class MMachines are designed and constructed for
continuous operation at high speed. Durability, maximum utility, and versatility are primary
qualities of these machines. The machines feature an automatic lubrication system of
advanced design and the finest precision parts. Manufacturing to closer tolerances has
reduced the noise level of the Class MG machine. The Class MG and Class M machines
offer true quality through long life, exceptional dependability, and superb performance with
aminimum of maintenance required.
The Class MG and Class M machines overseam and trim simultaneously and form
one of the following stitch formations: a one thread overseam; a two thread overseam or
finish; a three thread overseam or finish or tight needle thread seam; or a four thread (two
needle) overseam. The machines may be used on a wide variety of weights (thickness) of
knitted and woven fabrics.
We also make other classes of machines including Class 70 Butted Seaming
Machines, Plain Crochet Machines, and Shell Stitch Crochet Machines which are being used
successfully by manufactures throughout the world.
IMPORTANT:
ALWAYS WEAR SAFETY GLASSES WHEN OPERATING OR ADJUSTING THE MACHINE.
From the library of: Superior Sewing Machine & Supply LLC

HOW TO ORDER
Send parts orderto your nearest Merrow Distributor orThe Merrow Machine Company, 240 Day
Street Newington, CT 06111-1241, U.S.A. Phone [phone] FAX [phone]
Whenordering replacement parts include the Style ofthe machine, the Nameofthe part
(see diagrams
included), and the Letters and Numbers stamped on the part. The stamping on
aparticular part is
insufficient information without giving the name of the part. All enameled
parts will be furnished in green non-glare satin finish, unless gray is specified. To assist in
ordering, copy and fill in the sample order form provided on the back cover.
If difficulty is experienced in selecting the proper part number desired, we expect to be
able to make a proper selection from our records if given the following information:
(1) The Style and Serial Number of the Machine.
(2) The Name of the Part, and any A/umber stamped on
it.
(3) Special Information if the part you request is one of the following:
(a) Needle Plates - specify:
Width of finish desired; long or short finger; size of needle used,
(number of needle plate is stamped on underside of plate).
(b) Loopers - specify:
Upper or lower, one, two or three thread stitch. (Number of looper is
stamped on the shank near the butt end).
(c) Parts for Feed Mechanism - specify:
Single or double row. Front or rear feed if machine has differential
(gathering) feed.
MERROW MACHINES ARE DISTRIBUTED BY:
OTHER MERROW MACHINES
CLASS 70 BUTTED SEAMING MACHINES
PLAIN CROCHET MACHINES
BLANKET HEMMING MACHINES
SHELL STITCH CROCHET MACHINES
From the library of: Superior Sewing Machine & Supply LLC

THE MERROW MACHINE COMPANY
INDEX
Page
Feed Mechanism 19-21
Frame Cap Assembly 21
How To Order 3
Introduction 1
Loopers 12
Looper Setting 13-16
Lower Looper Carrier Assembly 21
Lubrication 8
Main Cams -Main Shafts 23-27
Needle 10
Needle Carrier Assembly 10
Needle Plate 10
Oil List 29
Order Form BackCcver
Presser Foot and Presser Foot Finger 19
Setting Up 6
Speed 6
Threading 16
Upper
and Lower Cutter Adjustment 18
Upper Looper Carrier Assembly 21, 23
DIAGRAMS
Page
Cleaning Oil Filter 9
Cutter Mechanism 17
Feed Mechanism , 20
Frame Cap Assembly 22
Loopers 12
Loopers, Bending 15
Loopers, Setting 13, 14
Machine - Front View 5
Machine - Rear View 28
Main Cams - Main Shafts 24, 25
Needle Carrier Assembly 11
Oiling
Parts 7
Presser Foot Assembly 19
From the library of: Superior Sewing Machine & Supply LLC

PRESSERBAR A-202-1-
P.B. Catch M-270-3
P.B. Catch LockM-308-1
P.P. Spring
CLASS MG AND CLASS M INSTRUCTION BOOK
HEADM-2-1
Screws (2) 913/16
Head Cap M-89-2
Screws 36 5/32,53 5/32
Head Cap Extension M-327-6
Screw 15 1/8
Screw 6 3/8
W.P. StudM-324 1
Screw 10 3/16
W.P. Plunger M-198-3
W.P.P.Spring 27*42
WORK PLATE M-84-#
Dust Shield M*87-#
Screws (2)2 1/8
Screw 13 5/32
Plunger A-198*1
Frame Cap M-3-1
Screws (4) 99 3/16
FRAME M-1-#
Screw 30 1/4
Screw 9 7/32
Name Plate
Model and
Serial Number
Screw 38 3/16
Threading Plate (Upper)
M*344-Assy-ff
Screw 1 #6
ThreadingPlate (Lower)
M-345*Assy-(Letter)
Screw 1 #6
FRONT VIEW
HAND WHEEL M*24-2A
Gasket(0-Ring) M-275-9
Hand Wliccl Guard M*325*9
Screw 18*3/16
Mill
I II I! I M I Ii
CINTIhtlTERS
From the library of: Superior Sewing Machine & Supply LLC