16pcs Brass Main Jet Kit 80 118 for GY6 49cc 50cc 80cc 100cc 139QMB 139QMA PZ19 Carburetor Carb Main Nozzle Replacement Compatible with 80 118(as Shown)

16pcs #80-#118 Brass Carburetor Main Jet Kit Fit for GY6 49cc 50cc 80cc 100cc 139QMB 139QMA PZ19 Carburetor Carb Main Nozzle Fitment: Aftermarket speed jet fit for GY6 49cc 50cc 80cc 100cc engine, fit for CVK 139QMB 139QMA PZ19 carburetor.Compatible with most made , ATVs, and Go Karts, including models from Jonway, JMSTAR, Roketa, Sunl, and Peace.Installation: Turn off the fuel switch, disconnect the fuel pipe, remove the carburetor, and take out the float component.Locate the main jet, carefully unscrew the existing low speed nozzle using a screwdriver, and replace it with the desired size from the kit.Material and Construction: The carburetor main jet kit is constructed from copper for and resistance to corrosion.Components are machined on a CNC lathe for precise dimensions and smooth surfaces.The cleaning needles and stainless steel bristles are made from 304 stainless steel, offering flexibility and resistance to rust.The brush handles are made of density nylon with good elasticity and no shedding.Kit Contents: The set includes 16 main jets, 5 cleaning needles, and 5 cleaning brushes, all stored in a small plastic case.Each main jet is engraved with its size.Main jet sizes included: #80, #82, #85, #88, #90, #92, #95, #98, #100, #102, #105, #108, #110, #112, #115, #118.Function: The main jet regulates fuel flow in the main oil and affects the air-fuel mixture concentration.Symptoms such as black smoke from the exhaust, fuel consumption, carbon buildup on the spark plug, loss of power, engine overheating, or backfiring may indicate a blocked or damaged main jet requiring replacement.Main Jet Specifications: - Quantity: 16 pcs - Length: 7mm - Thread: M4 x 0.7mm - Sizes: #80, #82, #85, #88, #90, #92, #95, #98, #100, #102, #105, #108, #110, #112, #115, #118 Cleaning Brush Specifications: - Overall Length: 110mm - Brush Length: 30mm - Brush Diameter: 3mm, 4mm, 5mm, 6mm, 7mm - Wire Diameter: 0.5mm, 0.6mm, 0.6mm, 0.7mm, 0.7mm Cleaning Wire Needle Specifications: - Overall Length: 110mm - Wire Diameter: 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm Application: Designed for use with GY6 49cc, 50cc, 80cc, 100cc engines and CVK 139QMB, 139QMA, PZ19 carburetors.Suitable for a wide range of , ATVs, and go karts manufactured in.Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.

• Model compatibility includes GY6 49cc 50cc 80cc 100cc 139QMB 139QMA PZ19 carburetors a precise fit for various scooter and small engine applications
• Constructed from brass material for enhanced and resistance to corrosion during extended use
• Kit contains 16 pieces ranging from #80 to #118 allowing fine-tuned fuel delivery adjustments for engine performance
• Designed as a direct replacement for carburetor main jets to restore proper air-fuel mixture and improve throttle response
• Suitable for use in motorcycles, bikes and other small engines requiring carburetor maintenance and tuning