2 Yr Old Fino spluttering then stopping?

[JeffersLos]

My son bought a Fino 125 two years ago and has put 65000 km on it. His GF does Grab delivery in the evenings, so it has high mileage. 

 

After riding it for 5 minutes, it starts to splutter when applying throttle and then stops. 

 

A small smell of burning. 

 

I thought it was out of coolant, but apparently it doesn't use any coolant. The closest repair guy came to it and topped it up with oil, saying that was the issue.

 

Rode it maybe 2 or 3 km and it started losing power and spluttering again, but didn't cutout when going easy on the throttle, and the burning smell wasn't noticeable. 

 

It seems to happen when it gets hot, after 5 minutes or so of riding.

 

Obviously will take it for a service, but they will just change the oil and oil filter, spark plug, brake pads and brake fluid, and pump up the tires without using a gauge. 

 

Any ideas on what the culprit could be?

 

TIA.

Edited 17 hours ago by JeffersLos

[KhunLA]

fuel filter

[harryviking]

12 hours ago, KhunLA said:

fuel filter

 

12 hours ago, KhunLA said:

fuel filter

check air filter too. need to change sometimes.

[thaibeachlovers]

My first thought was contaminated fuel, but the burning smell complicates things.

 

I'd contact the manufacturers. I had a problem with a camera that the repair guys couldn't fix, but the manufacturers came up with a solution a day after I e mailed them.

[watchcat]

12 hours ago, KhunLA said:

fuel filter

 

The bike is 2 years old, most people never change it.

[Ganoga]

Have the valves ever been checked properly?