Type 6 Carburetter 1929-54

Type 6 Carburetter Settings Chart

A standard needle jet is used on the type 6 models unless a size is given. Standard needle jet on the Monobloc is .106. Standard needle jets are not usually marked. The needle position is the number of grooves from the top. Mixing chamber tops can have one, two or no threaded holes for cable adjusters; there is an adjuster on the carburetter OR in the cable, not both, see main listing for details.

In addition to the variation of carburetters listed above there is a profusion of float chambers. The arm that attaches the float chamber to the mixing chamber can be one of several angles in order to keep the float vertical and can be angled to the left or right dependant on which side it is attached. Also the fuel can be admitted at the top or the bottom and using alternative fittings; these are listed below in the column headed “Fuel pipe fitting”.

Top = top feed – Bott = Bottom feed
Direct = Fuel pipe is attached directly to a threaded brass fitting that is part of the chamber
Banjo = Fuel pipe is attached to a banjo that is bolted to a threaded brass fitting with a side hole in it.

It has to be admitted that some of this information is a bit hazy as Ariel did not always list Amal parts and when they did they were not that accurate about it. Generally Amal’s listings are more accurate but they are a bit inaccurate about the model listings, for instance they list a 498cc KH Red Hunter 1950-54 as having a different specification of carburetter to a 500cc Twin, RH (KH) 1953-54!

ModelYearsCarburetter TypeBoreMain JetSlideNeedle PositionNeedle JetFloat AngleFuel Pipe FittingMixing Chamber Top
LF/LG1934-367425/328533.10615Top banjo4/032
LH1933-36757/811033.10715Top banjo4/032
LF/LG/LH1937-38757/811033.10715Top banjo4/032
NF/NG1933-38757/811043.10615Top banjo4/032
NG-W/NG1939-412757/812043.10615Top banjo4/032
NG-W/NG1942-502757/812043.10615Bott direct4/032
NH1933-3876115043.10615Top banjo6/032
NH1939-40276115043.10715Top banjo6/032
NH1946-54276115043.10715Bott direct6/032
VG (14/089 float)193276/0241 3/16150/160512Top direct
VF, VG1933761 1/1617053.10615Top banjo
VF, VG1934-38761 1/1617043.10615Top banjo
VG1939-402761 1/1617043.10615Top banjo6/403
VG1946-502761 1/1617043.10615Bott direct6/032
VH1933-38891 1/820033.10615Top banjo29/300
VH1939-542891 1/820033.10615Bott banjo29/300
HS195410TT91 3/1638064.10915
HS MK I1955-5810TT91 3/1640063.10915
VB19336115052.10615Top banjo6/032
VB1934-3976116043.10615Top banjo6/032
VA1939-4076114043.10615Top banjo6/032
VB1946-54276116043.10615Bott direct6/032
KG1948-5227615/1614033.1070Bott direct6/031
KH1948-54276115033.1070Bott direct6/031
FH19542761 1/1616042.1067Bott banjo6/403
4F1931-327421/32″9540Bott direct
4F, sidecar1931-327421/32″11040Bott direct
4F1933-357421/329043.1060Bott direct
4F19367421/329042.1060Bott direct
Fleet Van1931-335/1507/811043?
Fleet Van1931-35757/811043?

Gasket Sets

Part No

Description

Model

Years

GS275

Amal type 6 carburettor74,75,274,2751939-54

GS276

Amal type 6 carburettor76,2761939-54

GS289

Amal type 6 carburettor89,2891939-54

GS375

Amal Monobloc carburettor3751954-58

GS376

Amal Monobloc carburettor3761954-58

GS389

Amal Monobloc carburettor3891954-58

622/208

Amal ConcentricMk1

622/209

Amal ConcentricMk1 1/2

The original Amal carburetters were based on the products of the three companies that made up AMALgamated Carburetters Ltd. Initially they had brass bodies and separate float chambers, and were available in 4 body sizes each of which were available in several bore sizes; these were known as types 4, 5, 6 and 29. They were fitted from 1929 until 1933 wh en the body material was changed to zinc die cast alloy and the model numbers were modified to types 74, 75, 76, and 89. They can be distinguished from the later types because these have four air holes around the base of the body which the next type does not. In 1939 types 274, 275, 276 and 289 were introduced; these have two internal primary air passages in the base of the jet block. A later version with an ‘R’ suffix denotes that the primary air passage hole was moved to the air intake.

 Each type number mentioned above indicates a different size of casting. Each casting was to any one of several bore sizes. Therefore when searching for a replacement carburetter, the bore or choke size is needed in addition to the type. The suffix shown after the type on the flange indicates which jets, float chamber and to which machine it was originally fitted, it is irrelevant providing the body is of the correct size and type and the correct jets etc are used.

Poor starting and erratic tick over is usually caused by wear between the throttle valve and the body. Fitting a new slide in a worn body is like fitting a new chain to old sprockets, a waste of time. Wear is likely to be apparent as early as 5,000 miles, but can be rectified by boring the body oversize and fitting a sleeve to the slide. The materials used in this process will last a lot longer than the original. This is preferable to fitting a non-original later type of concentric carburetter. The new Monobloc carburetters that are now available have improved materials. The prices for re-sleeving are given in the price list by RES169 or RES170 for a complete overhaul.

For jetting application please select your bike make from the following list.

ArielBSA,

Part No.

Description

Carburetter. Type

Models

A7/1057/14

Insulating spacer 7/8 bore x 1/8 thick

A7/1057/17

Insulating spacer 1 1/16 bore x 1/8 thick

4/031

Mixing chamber top ring74/274/75/275

4/032

Mixing chamber top, 2 adjuster type for non-adjuster cables74/274/75/275

4/035

Cable adjuster (lock nut is 5/077 and not originally fitted)All

4/037

Throttle slide return spring74/274/75/275/76/276

4/038

Bellmouth, chrome74/274/75/275NG

4/040

Jet block washer74/274/75/275

4/041

Throttle needle clip?

4/042

Main jet,AllSee settings chart

4/043

Float chamber holding boltAll

4/045

Air slide74/274

4/046

Air slide springAll

4/047

Air slide guide tube74/274

4/052/3

Throttle slide, No. 3 cutaway74/274See settings chart

4/052/4

Throttle slide, No. 4 cutaway74/274See settings chart

4/052/5

Throttle slide, No. 5 cutaway74/274See settings chart

4/053

Mixing chamber bolt washer (2 per)All

4/060

Split pin to stop cable falling outAll

4/061/105

Needle jet, standard .105Not 89/289See settings chart

4/061/106

Needle jet, standard .106Not 89/289See settings chart

4/061/107

Needle jet, .107Not 89/289See settings chart

4/061/108

Needle jet, .108Not 89/289See settings chart

4/061/109

Needle jet, .109Not 89/289See settings chart

4/062

Union nut74/274

4/063

Throttle stop screwAll

4/065

Taper needle74/274

4/137A

Blanking plug on top of mixing chamberAll

4/148

Air screw springAll

4/230

Needle clipAll

4/235

Cap retaining spring clip, for top with adjusterNot 89/289All except KH

4/241

Cap retaining spring clip screwAll

4/263

Throttle spring274/75/275/276

4/276

Cap retaining spring clip, for top without adjusterNot 89/289KH

5/038

Bellmouth75/275

5/045

Air slide (choke)75/275

5/047

Air slide guide tube75/275

5/052/3

Throttle slide, No. 3 cutaway75/275See settings chart

5/052/3.5

Throttle slide, No. 3 1/2 cutaway75/275See settings chart

5/052/4

Throttle slide, No. 4 cutaway75/275See settings chart

5/052/5

Throttle slide, No. 5 cutaway75/275See settings chart

5/065

Taper needle75/275See settings chart

5/077

Cable adjuster lock nut (adjuster is 4/035) Not fitted originallyAll

6/031

Mixing chamber top ring76/276

6/032

Mixing chamber top, 2 adjuster type for non-adjuster cables76/276

6/033

Union nut, shallow76/276Not Ariels

6/038

Bellmouth76/276NH,VG,VA,KG,KH,VB

6/040

Jet block washer76/276

6/045

Air slide76/276

6/047

Air slide guide tube76/276

6/052/3

Throttle slide No. 3 cutaway76/276See settings chart

6/052/35

Throttle slide No. 3 1/2 cutaway76/276See settings chart

6/052/4

Throttle slide No. 4 cutaway76/276See settings chart

6/052/5

Throttle slide No. 5 cutaway76/276See settings chart

6/062

Union nut, deep76/276All Ariels

6/065

Taper needle76/276

6/110

Inlet adapter for air filter hose or offset pancake filters76/276

6/403

Mixing chamber top, no adjuster type for mid-adjuster cables76/276

13/129

Pilot air screwAll

13/153

Drain screw, float chamber, small about 3/16 diameterAll1933-49

14/012

Float chamber lid, complete, top feed, fuel pipe connects direct to topAll

14/014

Float clipAll

14/015

Float, bottom feed float chambers, see 14/304All

14/017

Float and needle, top feedAll

14/021

Float chamber lid lock boltAll

14/024

Float needle, all large (1 7/8″) bottom feed float chambers. If there are 2 grooves, 1 should be labelled ‘P’, this should be used with plastic floats.All

14/026

Spigot for petrol pipe, push on pipe, not as illustratedAll

14/030

Float needle, all large (1 7/8″) type 2 top feed float chambers except 2DX and 2EX

14/032

Tickler springAll

14/034

Float chamber lid, complete, top feed, fuel pipe connects via a banjoAll

14/035

Fuel banjo, single inlet, threaded 1/4 BSPAll

14/036

Union nut, holds banjo to base of float chamberAll

14/037

Banjo washerAll

14/039

Float chamber drain bolt fibre washer, smallAll

14/042

Gland nut, 1/4 BSP, for petrol taps, threaded banjos, ukulelesAll

14/042Q

Gland nut, 1/4 BSP, for petrol taps, threaded banjos, stainlessAll

14/043

Fuel banjo, double inlet, 90 degree, not threadedAll

14/049

Single banjo, solder typeAll

14/175

Float bowl gland nut washer, bottom feed, not banjo typeAll

14/208

Float chamber lid completeAllNot VA,HS,LH

14/209

Tickler buttonAll

14/210

Tickler bushAll

14/289

Tickler split pinAll

14/301

Tickler completeAll

14/304

Float & needle assembly, bottom feed, replaces 14/015 & 14/024

14/345

Single banjo, push-on type

16/010

Idle screw lock nut for 4/063All

23/110

Float chamber drain bolt fibre washer, largeAll1950-54

29/041

Mixing chamber cap top ring89/289

29/042

Mixing chamber top, 2 adjuster type for non-adjuster cables89/289

29/047

Throttle slide spring (see also 4/263)29/289

29/048

Bellmouth, small (not originally used by Ariel)89/289

29/050

Jet block washer89/289

29/055

Air valve (choke slide)89/289

29/057

Air valve guide tube89/289

29/062/3

Throttle valve No. 3 cutaway89/289See settings chart

29/062/35

Throttle valve No. 3 1/2 cutaway89/289See settings chart

29/062/4

Throttle valve No. 4 cutaway89/289See settings chart

29/062/5

Throttle valve No. 5 cutaway89/289See settings chart

29/075

Needle89/289

29/076/105

Needle jet, .10589/289See settings chart

29/076/106

Needle jet, .106, standard89/289See settings chart

29/076/107

Needle jet, .10789/289See settings chart

29/077

Banjo bolt, float chamber to mixing chamber89/289

29/078

Mixing chamber union nut, deep89/289

29/078A

Mixing chamber union nut, shallow89/289

29/110

Inlet adapter for air filter hose or offset pancake filters89/289

29/201

Cap spring for carburetter. top with cable adjuster89/289

29/201

Cap spring for carburetter. top with rod choke276KH

29/300

Mixing chamber top, no adjuster type for mid-adjuster cables89/289

29/301

Cap spring for carburetter. top without cable adjuster89/289VH

30/318

Carburetter top with rod operated air valve276KH

64/156B

Float chamberKG/KH

64/186B

Float chamber body, 15 degree, bottom feed

64/353

Float chamber blanking screw, large 1/4″ diameterAll1950-54

229/300

Bellmouth89/289VH

S21-4

Spigot for soldering to copper ¼” pipe, as illustrated
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