C100 Carburetor PZ19

C100 Carburetor

🔧 Carburetor · Fuel System · Universal Type

For Moped, Cub & ATV · Fits 139FMB, 147FMD, 147FMF, 150FMG engines

This is the C100 Carburetor, a standard model widely used in the small motorcycle, moped, and ATV industry. This carburetor is suitable for Mopeds, Cub series, and ATVs (All-Terrain Vehicles), and fits engines including 139FMB, 147FMD, 147FMF, 150FMG, and similar models.

The carburetor is the core component of the engine's fuel system, responsible for mixing fuel with air in the correct proportion to form a combustible mixture for the cylinder. The C100 carburetor features a proven design with simple construction, reliable operation, and easy maintenance, making it an ideal choice for these small engines.

This C100 carburetor fits the following engine models:

And most 50cc-150cc engines using the same carburetor mounting interface.

• Mopeds - Various 50cc-150cc moped models
• Cub Series - Honda Cub and clone models
• ATVs - Small-engine quad bikes / kids ATVs
• Mini Moto / Pocket Bikes
• Go Karts - Small recreational karts
• Other vehicles using 139FMB, 147FMD, 147FMF, 150FMG engines

• Hard Starting: Engine difficult to start cold or hot, requires multiple attempts.
• Rough Idle: Engine vibrates at idle, RPM fluctuates, stalls easily.
• Poor Acceleration: Sluggish throttle response, hesitation, or stumbling during acceleration.
• Backfiring/Popping: Backfire through intake or exhaust popping, indicating lean or rich mixture.
• High Fuel Consumption: Significantly higher fuel usage than normal, black smoke from exhaust (rich mixture).
• Fuel Leaks: External fuel leakage from carburetor or float bowl overflow.

If you experience these symptoms, the carburetor may be clogged, float stuck, or needle worn. Try cleaning the carburetor or replace it directly.

• Before Installation: Clean the intake manifold interface, inspect and replace aging vacuum hoses and fuel lines.
• Throttle Cable: Ensure proper cable installation with appropriate free play and smooth throttle operation.
• Choke: Verify choke operation works correctly for cold starts.
• Idle Adjustment: After installation, warm up engine for 3-5 minutes, adjust idle screw to stable idle speed.
• Mixture Adjustment: If needed, adjust mixture screw (usually on carburetor side) to optimize idle and transition performance.

💡 Note: Carburetors may need fine-tuning for optimal performance at different altitudes and temperatures. If you lack tuning experience, professional assistance is recommended.

🔧 Quick Installation Steps

1. Remove old carburetor, noting throttle cable, vacuum hose, and fuel line positions (take photos for reference).
2. Install new C100 carburetor onto intake manifold, tighten mounting bolts.
3. Connect throttle cable, ensure slide moves freely and throttle operates smoothly.
4. Connect vacuum hoses and fuel line, ensure secure connections with no leaks.
5. Start engine after installation, warm up, and adjust idle to normal range.

⚠️ Important Notice: This is a C100 carburetor suitable for Mopeds, Cubs, ATVs, and vehicles using 139FMB, 147FMD, 147FMF, 150FMG engines. Minor variations may exist between different models and production batches. Please verify your engine model or original carburetor interface before purchasing. Images are for reference only. The actual product may vary.