Carburetor Information

Carburetor Model Identification & Specs for American Motorcycles

List excludes AMX 6 and AMX13 as used on some Indian racing specials.
<Above Left is picture of a rare AMX12 racing carb,, Above Right, a rarer AMX13

For H Series Only:  The sNozzle column is the size of number drill used for cleaning spray nozzle, TheaValve column is used for size of leather air valve disc. (see photo of operation for a Model H)

Schebler Deluxe  Models A, B, (C with and without air horn) Carb ID numbers are stamped on body casting
Notes: The style of carb connection for the following carbs are all 3 point flange.
Most of these have 1/4″ gas nipples, some are 3/16. Throttle discs are numbered for idle chamfer degree,
be aware of this if swapping discs between carbs.

Linkert  3 Bolt Pattern Only
Check Victory Library for more Linkert documentation.
Quick ID, All  1940 carbs bear the inscription “Langsenkamp-Linkert Carburetor Co….” 1941 and later bear the inscription  “L & L Manufacturing Co…”

You will note  some correlation between model numbers and years in the numbering sequence. (see our serial database decoding table)

Linkert Make, Model, Years	ID #	Size “	Venturi, “
Indian Chief Seventy Four 1941-1944 (M341-M344) 1946-1948 (M346-M348)	M341,M342, M343 M344, M346, M347 M348	1¼”	1-1/16″ or 1-1/8″
Indian Fours 1941-1942 (M441-M442)	M441, M442	1¼”	1-1/16″
Indian Junior Scouts ‘Thirty Fifty’ 1941-1942	M541, M542	1″	13/16″
Indian Sports Scouts 45″  Sports Scout 1941-1942 45″ Daytona Big Base 1948	M641,M642 M648	1¼” 1¼”	1-1/16″ 1-1/8″
Indian Military Scout 741 GDA 30.50″ 1941-1943	M741	1″	3/4″
Indian Military 841 HDA 45″ Opposed Twin 1941 (twin carburetors, L & R)	M841L, M841R	1″	13/16″
Indian Chief 80″ 1950-1953 (if not fitted with Amal,Police)	M350, M351, M352	1¼”	1-1/8″
Harley 1937-1941 UL, ULH 1942-1948 UL, ULH 1937-1941 UL, ULH (opt)	M51 M51F M51L	1¼” 1¼” 1¼”	1/1/16″ 1⅛” 1⅛”
Harley	M21	1¼”
Harley 1941-47 Knuckle, 48 Pan	M35T
Harley 1937-1952 45″ WL WLA WLC	M88	1¼”	15/16
Harley 1936-39 EL Knuckle	M5, M5F	1¼”	1/1/16″
Harley 1949-1958 W and Servi-car	M18
Harley 1933 VLD, 34-36 V,VL,VLD 1937-39 WL, WLD	M2		1/1/16″
L&L Beck Aftermarket Replacement Carbs These carbs were aftermarket Linkerts remanufactured by Beck. As you can see left, there was a small INDIAN stamped under or above the model number.
1939-1942 Chiefs	M6	1¼”
1931-1938 Chiefs	M6A	1¼”
1931-1938 Chiefs (Bonne)	M6B	1¼”
1939-1942 Chiefs  (Bonne)	M6BA	1¼”
1943-1947 Chiefs	M6AP (strainer)	1¼”
Harley 1930-1936	M6VL	1¼”
1934-1938 Sport Scouts	M6S	1¼”
1934-1938 Sport Scouts	M6SA	1¼”
1932-1943 30.40 Jr.Scouts, All	M7 , M7SA?	1
Indian Fours, All?	M8	1

Tillotson
The Tillotson Mfg Co. Toledo Ohio.
<Left  MS-34A

Amal
British designed and built Type 6 (early)  Amal Carburetors where used on some Chiefs ’52-53 (Police excluded),
Vertical Scouts and Warriors from 1949 to 51 (I think!). Note the 3 bolt linkert manifold to 2 bolt amal adaptor.

From the late 40’s through the early 70’s and beyond most all British, American, and European carburetors have been of similar types. Whether its an early Amal Type 6, or a Linkert, or a late Amal concentric, they all function basically the same. The major difference between American carburetors and those on British and European bikes, is that for the most part American carburetors have used a butterfly valve rather than a slide/needle to meter the air/fuel above idle.

Amal – Type 6, Model 29	ID #
Indian Arrow 1949-1950 Models 149,150	Amal 27?XX
Indian Scout 1949 Models 249, 250	Amal 275XX
Indian Warrior /Warrior TT 1950- 1951 Model ?	Amal 276ES
Indian Chief 1952-1953  Models 352 & 353	Amal 289R

Zenith

At this time I have very little knowledge on the Zeniths. I believe they were used on some 36/37 fours, i.e.. the upside down fours, particularly the sports four (dual carb). please contribute if you can.

Hedstrom <under development>
This is a variation (perhaps racing?) of the Hedstrom Hendee carbs as used in the early Indians

Marvel
Help!

Revision History