MXT Carburetor Kit 17.5mm with Intake Manifold and Manual Choke compatible with Minarelli Standing

This carburetor kit from MXT is designed as a 17.5mm version for engines with a Minarelli standing configuration. The carburetor is factory pre-tuned, allowing for uncomplicated commissioning. Due to the larger passage, the kit is suitable for near-standard as well as performance-enhanced setups in the 50cc and 70cc range.

Product Features:

• Carburetor passage 17.5 mm
• Version with manual choke
• Factory pre-tuned basic setting
• Replacement for DellOrto-PHVA carburetors of the same design possible
• Suitable for 50cc and 70cc cylinders
• Delivery including open intake manifold
• Connections for gasoline, vacuum, oil and overflow available

The pre-tuned design reduces the adjustment effort to adapting the main jet. The existing connections allow the continued use of the standard peripherals, while the larger passage requires an adjusted jetting for stable engine operation.

Technical Details:

• Carburetor type: Slide carburetor
• Passage: 17.5 mm
• Choke: manual
• Main jet type: M6
• Connections: Gasoline, vacuum, oil, overflow
• Scope of delivery: Carburetor, open intake manifold

The combination of a 17.5mm passage and an M6 main jet enables a finely graduated mixture adjustment. This is particularly relevant in performance-enhanced cylinders, as the improved cylinder filling affects both power output and internal cooling.

Vehicle and Model Compatibility:

• Engines with Minarelli standing configuration
• Vehicles with standard DellOrto-PHVA carburetor, provided that design and connections match

A blanket vehicle assignment is not possible. Compatibility must always be checked based on the installed engine and the existing connections.

Assembly and Application Notes:

• Assembly is plug-and-play with matching intake and connection dimensions
• Main jet must be adapted to the vehicle

Recommended main jet ranges without guarantee:

• 50 cc cylinder, original air filter: M6 Set 70-92
• 50 cc cylinder, sports or racing air filter: M6 Set 80-102
• 70 cc cylinder, original air filter: M6 Set 80-102
• 70 cc cylinder, sports or racing air filter: M6 Set 88-110

A clean tuning of the main jet is crucial for smooth engine operation, controlled combustion and thermal relief of the cylinder. Incorrect jetting can lead to power loss or increased wear.

Note for checking before purchase:

• Before purchasing, engine design, existing carburetor type, connection diameter and air filter system must be compared. Deviations in the setup may require a different jetting or additional adjustments.

Brief info: Carburetor - Installation, Adjustment & Tuning

Installation: Mount carburetor without stress, check intake manifold and gaskets for air leaks, adjust throttle cable smoothly, ensure fuel supply (gasoline, oil and vacuum).

Basic setting: Mixture screw usually open 1.5 - 2.5 turns, adjust idle screw for stable idle, always tune engine when warm.

Tuning:

• Main jet = full throttle / high load
• Needle position = partial load & acceleration
• Pilot jet = idle & starting (usually does not need to be changed)

Check: Check spark plug image

• white = too lean
• black = too rich
• brown = optimal

Important: After changes to air filter, exhaust or cylinder, a new carburetor tuning is absolutely necessary.

About the manufacturer MXT

MXT is the powerful in-house brand of Heavy Tuned and stands for high-quality replacement and tuning parts for motorcycles, scooters and mopeds.

As a reliable alternative to OEM parts, MXT offers a wide range of cylinder kits, carburetors and crankshafts to variator components, fairing parts and batteries. The products convince by solid workmanship, accurate quality and a strong price-performance ratio.

Ideal for drivers looking for durable spare parts and tuning parts for many vehicle models.