Why won't my Suzuki UY125 start?

[DelJanelle]

Common causes include: 1. Overly lean air-fuel mixture. 2. Severe carbon buildup on spark plugs, which weakens spark intensity and causes starting difficulties. Severe spark plug carbon deposits are mainly caused by poor combustion or excessive engine oil. 3. Incorrect spark plug electrode gap (too large or too small), affecting spark intensity. 4. Electronic ignition unit failure. Compare with a known-good unit of the same model for diagnosis. 5. Possible poor contact or leakage in other parts of the ignition system wiring. 6. Faulty magneto ignition coil. 7. If the ignition system works normally but starting remains difficult, the fuel delivery system is likely problematic. For the fuel system, check for water contamination in the fuel tank, fuel line obstructions, and primarily inspect the carburetor. Carburetor issues often stem from excessive debris accumulation in the float chamber or clogged main jets causing poor fuel delivery. 8. Excessive carbon buildup in exhaust ports/pipes or a dirty muffler can also cause starting difficulties.