If your CB Honda Shine bike continues to accelerate for 3-5 seconds after releasing the accelerator, there may be an issue with the throttle or the throttle cable. Here are a few potential causes for this problem:
Sticking Throttle: The throttle may not be returning to its idle position properly due to dirt, debris, or a mechanical issue. This can cause the bike to continue accelerating even after releasing the throttle.
Throttle Cable Tension: The throttle cable may be too tight, preventing it from returning to its idle position quickly. This can result in delayed deceleration.
Carburetor Issues: If your bike has a carburetor, it could be dirty or clogged, affecting the air-fuel mixture and causing the delayed deceleration.
Engine Idle Speed Adjustment: The idle speed may be set too high, causing the engine to continue revving for a few seconds before returning to a lower speed.
To resolve this issue, it is recommended to take your bike to a qualified mechanic or authorized service center for a thorough inspection and repair. They will be able to diagnose the exact cause of the problem and make the necessary adjustments or repairs to ensure smooth deceleration.