Write a review
Evaluations will be activated after verification.

The fields marked with the asterisk * are mandatory.
Clicking on "Save" I accept the processing of my personal data in accordance with the Privacy statement of SCOOTER CENTER GmbH.

 
 
Item successfully added.

Jet -MIKUNI (type: 4/042) TM/TMX, AMAL ARRECHE - (140)

2705140
Jet -MIKUNI (type: 4/042) TM/TMX, AMAL ARRECHE - (140)

Description


The main jet is considerably involved in the mixture preparation of the carburetor.
If it is too small, the engine dies off under full load and/or runs so leanly that the piston and cylinder overheats and a cylinder damage would be the consequence.
If it is too large, the mixture is too rich, the engine runs very unevenly and can only deliver a fraction of its possible power.
Here it is important to find the ideal compromise.

To determine the correct main jet, it is first of all selected from the belly so large that the goal is an engine that stutters heavily under full load. Of course it needs some experience, but a nozzle is also quickly changed.

Once you have found such a nozzle you mount a smaller nozzle until the engine does not stutter under full load any more.

This way you have already an ideal basic lubrication which ensures that the engine does not get too little fuel under full load, which it also needs to cool the piston and cylinder. A safety optimum is an engine adjusted in this way, which throttles down very slightly when the throttle is closed again under full load.

The Mikuni carburettors have been improved over the decades, so that they come very close to the literal ideal of carburettors. In the end, the gasoline is only atomized, of course, but now with a precision that is impressive. An indicator for this is that the Mikuni carburettors cover a very wide range in which they can produce a mixture that is still easy to process for the engine. For example, if the atomisation in a Dell'Orto carburettor from the PHB series was already much too lean, this would not be a problem with a Mikuni TM/TMX carburettor. But a real problem can be seen in this characteristic of the Mikuni carburettors. The atomization quality is so fine that the feedback of the engine, whether the mixture is too lean or too rich, is relatively low. This way you can tune an engine much too lean and ruin it even though it seems to run perfectly. So for this high quality carburettor type you usually need a little longer for a precise tuning which works well in all situations. Usually you can take the carburettors out of the box, install them and don't have to change/adjust much for the first test drive. Except for a few exceptions (TM27, where you often need the needle of the TM30 models).

  • size head: 6mm hexagon
  • thread: M5,3 x 0,9
  • total length: 11,5mm
  • thread length: 5,0mm
  • 50 - 200 ( 5er step )
  • 210 - 500 ( 10er step )
  • 520 -720 ( 20er step )
  • Designation Mikuni: 4/042

Used in:

  • VM carburettor (not VM carburettor from Piaggio/Gilera series vehicles)
  • TM carburettor
  • TMX carburettor
Attention: Mikuni TM jets are calibrated by flow per unit time, not by bore size. Therefore, nozzles calibrated via the bore (e.g. Dell'Orto) are not comparable in size and function.

AI-translation

 
€6.35 *

incl. VAT plus shipping costs

Available immediately (delivery time 1-3 working days*)
P For this item you get fidelity point/s
Carburettor jets
used with carburettors brands: Amal Arreche, Mikuni
jet type (manufacturer code): 4/042
used as main jet in: Arreche 17.5, Arreche 19, Arreche 21, Mikuni TM24, Mikuni TM28, Mikuni TM32, Mikuni TM34, Mikuni TM36, Mikuni TM38, Mikuni TMX27, Mikuni TMX30, Mikuni TMX32, Mikuni TMX35, Mikuni TMX38, Mikuni VM16, Mikuni VM17, Mikuni VM18, Mikuni VM20-151, Mikuni VM20-179, Mikuni VM20-273, Mikuni VM24, Mikuni VM26, Mikuni VM28, Mikuni VM30, Mikuni VM32, Mikuni VM34, Mikuni VM36, Mikuni VM38, Mikuni VM40, Mikuni VM44
diameter head: 6 mm
thread: M5 x 0,9
length of thread: 5 mm
total length: 11.5 mm
Customers alternatively searched for
Düse | Hauptdüse | Sproeier | Buse | Mainjet | Vergaserdüse | Main | Jet | Gicleur Principal | Getto Massimo | Chiclé |

Available versions

Part no.: Jet size Price Stock Cart Save
Part no.: 2705140 Jet size 140 Price
€6.35
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705145 Jet size 145 Price
€5.95
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705150 Jet size 150 Price
€6.15
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705155 Jet size 155 Price
€6.35
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705160 Jet size 160 Price
€5.59
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705165 Jet size 165 Price
€5.80
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705170 Jet size 170 Price
€5.59
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705175 Jet size 175 Price
€5.85
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705180 Jet size 180 Price
€5.59
Stock
The item is ordered and will be in stock soon
Cart
Save
Part no.: 2705185 Jet size 185 Price
€5.80
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705190 Jet size 190 Price
€5.80
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705195 Jet size 195 Price
€5.39
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705200 Jet size 200 Price
€4.99
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705210 Jet size 210 Price
€5.85
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705220 Jet size 220 Price
€5.85
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705230 Jet size 230 Price
€5.59
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705240 Jet size 240 Price
€5.95
Stock
The item is ordered and will be in stock soon
Cart
Save
Part no.: 2705250 Jet size 250 Price
€5.59
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705260 Jet size 260 Price
€6.00
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705270 Jet size 270 Price
€5.85
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705280 Jet size 280 Price
€5.59
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705290 Jet size 290 Price
€5.59
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705300 Jet size 300 Price
€5.59
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705310 Jet size 310 Price
€6.69
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705320 Jet size 320 Price
€6.00
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705330 Jet size 330 Price
€5.95
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705340 Jet size 340 Price
€5.59
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705350 Jet size 350 Price
€5.95
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705360 Jet size 360 Price
€5.59
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705370 Jet size 370 Price
€6.99
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705380 Jet size 380 Price
€5.59
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705390 Jet size 390 Price
€5.59
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705400 Jet size 400 Price
€5.59
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705410 Jet size 410 Price
€5.39
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705420 Jet size 420 Price
€5.39
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705430 Jet size 430 Price
€5.39
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
Part no.: 2705450 Jet size 450 Price
€5.59
Stock
Available immediately (delivery time 1-3 working days*)
Cart Save
The main jet is considerably involved in the mixture preparation of the carburetor. If it is too...Continue reading
Recently viewed items