2007 Piaggio Fly 50 intermittent hard starting

Re-set the idle adjustment screw on carb? Also check fuel / air filter.

Try start for about 30 seconds. pull the spark plug and check:
1 - is it wet?

Yes = getting fuel (Go to 2)
No = Not getting fuel

Carb is probably blocked/dirty
vacuum fuel valve faulty

Check carb has fuel in it. Open the drain screw on the bowl of the carb and see if any fuel is released.
If so, the vacuum valve is fine.

2 - Does the plug have spark? It should be a BRIGHT blue spark.
3 - replace the plug with a fresh new plug.

Remove boss washer from CVT, test different variator roller weights, depending on terrain the torque spring can be exchanged:and tuned in with the roller weights for optimum performance, test carb jets, upgrade muffler,...

There should be a tank, usually under the seat or behind the rear side panels. Just fill the 2-stroke tank and don't worry about the mixing, the engine does it on it's own.

There is a plastic knob on the side of the carby that you can adjust to set the idle speed. Start the engine and turn the knob until the idle speed is felt above your throttle setting. Now set the idle speed with no throttle and you feel it is about right ( 500-600 rpm ).

Hi,
Check these parts.....

• spark plug that might already fouled up and needs cleaning.
• spark from ignition coil, if there are no sparks the CDi got problem
• carburetor, check if there is a fuel going into the carb, choke it by hand, fuel moist must be seen on your hand. If not no fuel is flowing into the carb.
• check fuel filter if fuel is coming out continuosly.

Hope that helps you out!