About the Yamaha SR250
Carburetor and chassis service parts for the early SR250 Exciter.
The early SR250 Exciter I combines a small single-cylinder engine with a road-going chassis. Its CV carburetor uses a slide diaphragm, a separate component from the float needle and seat that control fuel entering the bowl. The service parts below focus on identifying those carburetor components and maintaining the forks and rear brake.
Match the diaphragm or float valve to the actual repair
The slide diaphragm is part of the carburetor’s slide arrangement; the float needle and seat regulate fuel entering the bowl. They are separate repair items, both with 1980–1982 SR250 applications here. Compare the fitted carburetor and component before choosing parts for poor slide operation or a fuel-level problem.
Know your SR250 before choosing partsSR250 repair checkpoints
Carburetor service: 1980–1982
The featured slide diaphragm and float needle with seat share this range, but they are different components. Match the part to the condition found during inspection.
Chassis versus clutch coverage
The listed fork seals and rear shoes cover 1980–1982. The individual clutch friction plate names 1982 only; earlier-year coverage needs separate confirmation.
Identify your motorcycle before orderingSR250 identification checklist
Use the motorcycle’s identification and the fitted component together. A registration year or family name can leave important application details unresolved.
- Match the motorcycle’s model year to each product application.
- Read the fitted carburetor markings and compare the diaphragm shape and inlet-valve arrangement.
- Confirm the rear brake and fork are original or identify their replacements before selecting wear parts.
Contact PartsNMore with the model year, frame and engine markings, and clear photos of the component being repaired.