How to Clean the 125cc Scooter Carburetor and Start-Up [Bikebro Intermediate DIY]
We'll explain the tools for cleaning the carburetor, how to drill holes, and how to connect hoses. -
Please watch the video to learn how to clean the carburetor and throttle body, as they are different. -
How to start a scooter after cleaning the carburetor if it won't start even after replacing the battery. *
(Is drilling a hole in the slow jet difficult? Buy the thinnest needle you can find at your local oriental medicine clinic!)
1. If your scooter won't start even after replacing the battery, check the carburetor! 2. Symptoms of a clogged carburetor
(Hesitation to start, gasoline flowing backwards)
3. Chinese 125cc carburetors and engines manufactured between 2000 and 2015 are nearly identical
(The carburetor is a DENI copy of Keihin, and the engine is a GY6 copy of Honda.)
4. Detailed explanation of the differences between carburetors and throttle bodies and how to distinguish them
Carburetors have only one electrical device: an auto choke. The throttle body is almost entirely operated by electronic sensors (injection scooters).
5. If the carburetor is completely clogged, gasoline will flow backwards and outward.
(If disassembling and cleaning the carburetor doesn't improve the problem, replace it.)
6. Detailed instructions for disassembling a carburetor from the engine.
(If the insulator pipe is also cracked, compression will be low and the engine will not start properly.)
(Be sure to check the hoses connected to the carburetor carefully when disassembling.)
7. Tools for cleaning the carburetor.
8. Instructions for disassembling and cleaning a carburetor.
(A torn carburetor piston rubber can cause RPM problems.)
(When loosening the carburetor bolts, always loosen them accurately in one go.)
(A brief explanation of the function of a gasoline oil dipstick.)
9. Brief explanation of the main jet and slow jet.
10. All holes for the main jet and slow jet must be drilled using carburetor-specific tools. 11. Clean all holes in the carburetor body with cleaner.
12. Final cleaning with an air gun.
13. Reassemble the carburetor.
(Gas will leak if not properly assembled.)
(Caution when assembling the carburetor piston rubber.)
14. Detailed instructions for assembling the carburetor to the engine.
Instructions for adjusting the RPM.
Important! Do not touch the air adjustment screw unless absolutely necessary!
Connect the air cleaner nozzle correctly!
Important! Never bend any hoses, as this will cause a stall during starting.
You can adjust the grip clearance while assembling the throttle cable!
15. If the engine starts without any issues, it's a success! (The scooter in the video had its engine cranked out after starting.)
Failure to change engine oil on time can cause this malfunction.*
00:00 Carving 125 Won't Start
01:23 How to Distinguish a Carburetor and Throttle Body
02:50 Symptoms of a Clogged Carburetor
03:30 Disassembling a Carburetor from a Scooter
05:44 How to Disassemble and Clean a Carburetor
09:57 Cleaning the Main Jet and Slow Jet
17:01 Don't Touch This Part of the Carburetor
17:59 Assembling a Carburetor on a Scooter
21:04 Starting and Finishing Instructions
Classic Scooter: KNC Carving 125 -
#CarburetorCleaning#CarburetorDisassembly&Assembly#ScooterWon'tStart