Product Parameters
| Specification Item | Description |
|---|---|
| Compatible Models | 2500 series, 25cc chainsaws, Zenoah Komatsu, Ozito G2500 |
| Screw Types Included | L (Low-speed) + H (High-speed) + LA/T (Idle speed) |
| Thread Size (Typical) | M4 × 0.7mm or M5 × 0.8mm (varies by carburetor model) |
| Screw Head Type | Slotted / "D" shaped / Splined / Pac-Man |
| Material | Brass / Zinc-plated Steel |
| Application | Carburetor air-fuel mixture tuning and idle speed adjustment |
| Included Components | 3 adjusting screws + springs (where applicable) |
Product Description
Product Details
1. Complete Tuning Screw Set
Includes all three essential adjustment screws for full carburetor tuning capability - L screw for idle and low-speed mixture, H screw for high-speed mixture, and LA/T screw for idle speed control .
2. Corrosion-Resistant Construction
Manufactured from durable brass or zinc-plated materials that resist corrosion from modern ethanol-blended fuels, ensuring long-term reliability and consistent adjustment retention .
3. Direct Replacement Fit
Engineered to match OEM carburetor specifications for 2500 series small engines, providing drop-in compatibility without modification for Walbro, Zama, and compatible carburetor models .
Products Package
About Us
Production
Quality control
FAQ
Q: How do I identify which adjusting screw I need?
A: The L screw controls idle/low-speed mixture, the H screw controls high-speed mixture, and the LA (or T) screw adjusts idle speed . Many carburetors have these markings stamped next to each screw location.
Q: What's your MOQ?
A: Different products have different MOQ, depends on your quantity .
Q: Do you have any other products to recommend to us?
A: We have various product lines and can recommend the most suitable products based on your requirements.
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