carb settings

[Keir]

just bought a 50cc monkey bike, made by baotian. its a cheap Chinese thing but was cheap so everyones a winner.

except.... it runs great when using anything up to 3/4 throttle. after that it bogs down and pops/bangs. its quite usable as it it but would be nice to be able to go full throttle and see what the machine can do (very little probably)

Not sure if its rich or lean , give me some tips of how to sort this out. please.
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Current : '08 Yamaha FZ1s
Previous: '99 Honda CBR 600FX, 03 ZX636 B1H, 99 Fazer 600 (red), 02 GSX-R 600 K2, 00 SV650s (red), 2008 ZX10R, 97 Bandit 1200N, 04 ZX6RR K1H, 04 GSX-R 1000, 98 Fazer 600 (gold), 05 Madness 110 Pit bike, 04 CR125R, 00 SV650s (black), 06 KTM 625 SMC, 99 SRAD 600 track bike, 03 SV650, 98 Bandit 1200N, Bandit 600SY, 03 GSX-R 600 K3, 01 GSX-R 600, 01 Fazer 600 (black), VFR 400 NC30 x3, 78 Honda Dream, 00 Speedfight 50

[temeluchus]

All hoses unkinked? Fuel tap flowing freely? Tank and carb not full of water? Airbox present and properly fitted?
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Some shite cruiser. Now with guns and FREEDOM!

[RhynoCZ]

You can smell rich mixture, if you are not familiar with the smell, check the spark plug:

RICH (running cold, distinctive smell, black spark plug)
- Clogged air filter
- Stuck choke
- Someone was ''smart'' and put a bigger jet there (why?)

LEAN (running hot, white insulator, probably damaged/baked)
- No air filter
- Missing the air box + fitted a pod filter that lets through way more air than it should
- Air leaks
- Someone was ''smart'' and put a smaller jet there (why?)

https://www.v6z24.com/mods/howto/images/plugs/plugs19.jpg
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[Keir]

solved.

Having been sat for quite a few years the main jet was partially blocked. Had the carb out and plenty of carb cleaner later its running great.

runs right off the clocks now, but they do only go to 40mph!
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Current : '08 Yamaha FZ1s
Previous: '99 Honda CBR 600FX, 03 ZX636 B1H, 99 Fazer 600 (red), 02 GSX-R 600 K2, 00 SV650s (red), 2008 ZX10R, 97 Bandit 1200N, 04 ZX6RR K1H, 04 GSX-R 1000, 98 Fazer 600 (gold), 05 Madness 110 Pit bike, 04 CR125R, 00 SV650s (black), 06 KTM 625 SMC, 99 SRAD 600 track bike, 03 SV650, 98 Bandit 1200N, Bandit 600SY, 03 GSX-R 600 K3, 01 GSX-R 600, 01 Fazer 600 (black), VFR 400 NC30 x3, 78 Honda Dream, 00 Speedfight 50

[RhynoCZ]

Well, 40mph is 11.875mph faster than what an Am friendly bike should be.
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor