Keeway Superlight 125 Problems

For motorcycle enthusiasts, the Keeway Superlight 125 is a stylish choice that’s easy on the wallet. However, there have been numerous reports of stalling issues with the bike, particularly when starting from 1st gear. This article dives into the problems reported by riders, potential causes, and suggested remedies.

The Problem

A user who purchased the Keeway Superlight 125 in October 2018 highlighted a persistent issue: the bike stalls randomly when initiating from 1st gear. This is not limited to just one scenario, though, as the bike can also stall while idling between 1500 to 2000 revs.

Potential Causes and Solutions

1. Clutch Switch

Problem: The clutch switch might not be functioning correctly. If it believes the clutch is engaged when it isn’t, or vice versa, this can impact the fuel feed to the bike and result in stalling.

Solution: Ensure the clutch switch is cleaned and functioning as expected.

2. Kickstand Switch

Problem: A faulty or gummed up kickstand switch might be causing the issue. The bike may sense the kickstand is down due to vibrations at low revs, triggering a stall.

Solution: Checking and cleaning or replacing the kickstand switch can alleviate this issue.

3. Cold Engine

Problem: In some cases, the stalling may be related to a cold engine.

Solution: Allow the engine to warm up properly before initiating. Some users even suggested letting the bike run with the choke for an extended period before riding.

4. Carburetor vs. Fuel Injection

Problem: The 2018 model of Keeway Superlight 125 may either be carbureted or fuel-injected. Keeway transitioned to fuel injection in 2019 models due to reported issues. The stock carburetor in the 2018 model, in particular, could be causing the stalling issues.

Solution:

• For carburetor issues, the idle jet might be the culprit. Owners could opt to clean the carburetor thoroughly or replace it with a more reliable Japanese carburetor.
• For those with the fuel-injected model, the issue might lie in a sensor problem. It would be best to get this checked by a mechanic.

5. Fuel Filter

Problem: The fuel filter may be clogged or old, restricting fuel flow and causing the engine to stall.

Solution: Check and possibly replace the fuel filter.

6. Spark Plug and Shuddering Issue

In a subsequent update, the same user mentioned changing the spark plug and servicing the bike. Despite these efforts, the stalling persisted. Additionally, a noticeable shuddering was reported when maintaining a constant speed.

Solution: For the shuddering, it could be related to fuel delivery, a misfiring cylinder, or even transmission issues. It would be advisable to have a detailed diagnostic run on the bike.

Conclusion

While the Keeway Superlight 125 offers aesthetic appeal and affordability, it’s not without its challenges. Those experiencing issues should consult with a trusted mechanic to troubleshoot and address the problems effectively. Additionally, potential buyers should be aware of these concerns when considering the Keeway Superlight 125.