Hi, Yorkie and the usual suspects are: 1. Low coolant level. Restricted radiator air flow. Faulty thermostat.

1. Haynes Workshop Manual

Coolant pump or fans inoperative. Vent hose crimped. Air in the coolant and needs bleeding. Engine idling too long or bike moving too slow. Coolant too old needs to be replaced. Faulty radiator cap.

Haynes Workshop Manual

For more information about your issue and valuable 'FREE' downloads that you will need please click on the blue links below. Good luck and have a wonderful day. Btw, I’m available to help over the phone in case u need at Jun 25, 2017. Hi, Faris1234567 nice novella you may have carburetor issues and the usual suspects are: 1. Inlet system air leak. Enrichener valve not seated or leaking. Damaged or restricted fuel tank vent system.

Restricted fuel supply tract. Dirty or damaged air cleaner element. Plugged bowl vent or overflow. Worn or damaged needle or needle jet. Vacuum piston assembly malfunction. Loose or plugged main jets or passages.

Improper float level. Accelerator pumps inoperative.

For more information about your issue and valuable 'FREE' downloads that you will need please click on the blue links below. Good luck and have a wonderful day.

Btw, I’m available to help over the phone in case u need at Mar 10, 2017. I also own one (4 years old). Assuming it drives strongly enough at speed the problem will be your belt drive/variator transmission. If you are OK mechanic-wise remove the left side panel (you have to remove the small rear panel near the lights first) and then all the txmission case screws to have a look. If the belt is OK (and they last forever) it could be you need new roller weights in the front variator. They wear flat spots afet a couple of years that ruin acceleration. (Special tool needed - I made one though), or new clutch shoes in the rear variator - or maybe they are just sticking and need a good clean.

Spin everything by hand to check for noise/slop/ wobbliness and check the oil in the tiny rear gearbox (see owners handbook. You need a measuring cup and a paint syringe to get the exact amount right. If you aren't confident use a good bike garage. Weights are inexpensive and probably clutch shoes too so if you can do any labour yourself it won't break the bank. Google for a free SYM Joyride workshop manual by the way.

Happy scootering Jul 18, 2009.