5th Service Update:
Good morning TAI, yesterday I received Motul Scooter LE 10w30 oil and went to get Jupiter serviced. First time it is serviced outside service centre.
The current odo stands at 11500 km. The mileage has dropped to 42 now maybe because I am revving it upto 60kmph when I get a chance or because it was due for service. Took it to a known mechanic and stood there when work was being done.
He cleaned the carburettor with petrol and cleaned air filter. Checked Spark plug and it didn't need replacement for now. Couldn't take photos because my phone battery was very low.
Front visor was making noise when going over rough patch of road so asked him to open it and the culprit was loose nuts which hold the visor. Tightened them and now noise is gone. Set carburettor and Jupiter does not stall now at low speeds. Overall I am satisfied with his work.
After changing oil I can feel the difference. Engine sounds sweet now, there are vibrations at idle but very less than earlier. The engine runs smoothly now. It's just been one day since I changed oil so yet to check mileage with new oil, hope it will increase.