to article: Main jet M4 size 84 139QMA 139QMB GY6 4-stroke 50ccm

Technical information

Carburettor jet

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The carburetor nozzle regulates the amount of gasoline that goes into the carburetor - and from there into the engine. It must be chosen the right size for the engine to run effectively. One of the things you can tell whether the combustion is running perfectly is the spark plug pattern. If the engine runs too rich (too much fuel per air volume), then the spark plug is caked. If it is too lean, you get a white insulator and a gray electrode. If the motor is set correctly, you get a clean candle image with a burnt-free electrode and a fawn-colored insulator.

This article fits many models, including:

Rex RS 450, Otto Versand Rex RS 400, Otto Versand Rex RS 750, Jonway Milano 50, Kreidler MONZA 50 Race / Urban (Fin: WS1 or L8Y), Jonway Imola 50 Race / Urban, Kreidler MONACO 50 Race / Urban, Rex RS 900 QM50T 10A-A, Rex RS 600 QM50QT-2, Rex RS Classic 50, AGM GMX 450 One JSD50QT-13, Rex RS 500 QM50QT 6A-AQINGQI, AGM GMX 550, AGM GMX 450 Sport JSD50QT-13 , Rex RS 460 BOSTON 8

The spare parts from this manufacturer have proven themselves in daily use for years. The quality is increased to a maximum through the constant exchange of experiences.

OEM quality, best processing In-stock goods, low price because direct import is immediately ready for dispatch

You can easily buy our spare parts for your scooter or scooter online in our shop. Regardless of whether you bought your scooter in a department store or in a hardware store, you will find suitable components for all common European, China or Taiwan scooters, especially for the engines 50 cc, 125 cc, 250 ccm, 2-stroke, 4-stroke and for greater performance. Especially for the motor types 139QMB, 139QMA, 1E40QMB, 152QMI, 157QMI, GY6, 125-4T6M, 139FMB, 153FMI, 156FMI, 157QMJ, 158MJ, 164FML, 1E40QMA, JSD139QMB, 150QMG in short and long versions in the Euro2, Euro3, Euro1 as well as the new Euro 4 injection engines you will find high quality spare parts. You are also welcome to inquire about spare parts by email. For orders over 100 euros, you can also use our financing or hire purchase service. When purchasing vehicles, we can also make you a leasing offer, which is particularly useful for companies that purchase company vehicles or provide their employees with a vehicle. Please ask.