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General Discussion / Re: Sento 50 underseat security code
« on: March 03, 2025, 12:54:00 PM »
Thanks appreciate your advice. Will just keep it unplugged and keep working on the no spark issue.
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General Discussion / Re: Sento 50 underseat security code
« on: March 02, 2025, 03:40:28 AM »
No manual unfortunately. New one on me too! Can't even find that part on the parts diagrams for Kymco Sento!
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General Discussion / Sento 50 underseat security code
« on: March 02, 2025, 02:18:17 AM »
I recently bought a Kymco Sento 50 4 stroke which someone tried to steal and broke the seat lock.
It was running but would stop intermittently. Next day it would start but then die after about 10 seconds.
Now it wont start at all and I have noted it has no spark.
Before I go down a rabbit hole on coils, CDI etc I am concerned about the three digit underseat security code and if that might be the issue.
I have no idea what the code might be and how the three wires coming out of it might affect the spark - but the manual says if the codes not right it will not start.
Even though it did run for a while I am not sure if I may have pushed one of the knobs around mistakenly or if this device may just have failed and then just acts like a kill switch?
Any advice would be appreciated.
It was running but would stop intermittently. Next day it would start but then die after about 10 seconds.
Now it wont start at all and I have noted it has no spark.
Before I go down a rabbit hole on coils, CDI etc I am concerned about the three digit underseat security code and if that might be the issue.
I have no idea what the code might be and how the three wires coming out of it might affect the spark - but the manual says if the codes not right it will not start.
Even though it did run for a while I am not sure if I may have pushed one of the knobs around mistakenly or if this device may just have failed and then just acts like a kill switch?
Any advice would be appreciated.
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Technical | How To / Re: No power on pronto 50cc
« on: January 19, 2017, 11:01:06 AM »
Finally discovered it is a clogged exhaust.
I am going to try to cook my exhaust to get the rubbish out so will see how we go.
However also trying to see what is available for an aftermarket exhaust/muffler
Can anyone tell me what motor the 2009 Kymco Yup 50 two stroke motor is based on?
My model is actually called a Kymco Bug pronto in Australia but as far as I can see it's a Yup 50 in Asia. No idea what its called in the US?
Anyway if I know what the motor is cloned from I will know what I am looking for muffler wise. Also what its called in the US would be useful.
Thanks.
I am going to try to cook my exhaust to get the rubbish out so will see how we go.
However also trying to see what is available for an aftermarket exhaust/muffler
Can anyone tell me what motor the 2009 Kymco Yup 50 two stroke motor is based on?
My model is actually called a Kymco Bug pronto in Australia but as far as I can see it's a Yup 50 in Asia. No idea what its called in the US?
Anyway if I know what the motor is cloned from I will know what I am looking for muffler wise. Also what its called in the US would be useful.
Thanks.
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Technical | How To / No power on pronto 50cc
« on: January 17, 2017, 12:17:46 PM »
Hi everyone I am a newby from Oz and recently bought my son a 50cc Bug pronto (Yup50?)
It starts first time and idles smoothly but at full throttle won't get more than 20kph and can't even make it up the smallest hill.
So far I have:
-replaced drive belt
-checked rollers (but didn't check diameter just for flat spots)
-New fuel filter
- checked air cleaner
- cleaned carby
- New spark plug
Still no luck! Any ideas where I should go from here?
My thoughts are to do a compression test next and also check the rollers for diameter.
Your suggestions welcome.
It starts first time and idles smoothly but at full throttle won't get more than 20kph and can't even make it up the smallest hill.
So far I have:
-replaced drive belt
-checked rollers (but didn't check diameter just for flat spots)
-New fuel filter
- checked air cleaner
- cleaned carby
- New spark plug
Still no luck! Any ideas where I should go from here?
My thoughts are to do a compression test next and also check the rollers for diameter.
Your suggestions welcome.
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