OK, pull start right? It doesn't start when you pull? Do you have a 'glow igniter'? Is the glow igniter charged?

Try this...

Fill the tank (obviously), make sure transmitter and receiver batteries are full/charged. Make sure the glow igniter is charged. Now put your finger over the exhaust tip and pull the starter, the fuel should start winding it's way toward the engine, keep doing this until the fuel reaches the engine. now place the glow starter on the glow plug, and pull! It may take a while if it has not been started in some time. If the glow plug itself is good, the igniter is charged and the fuel is ok (as in not too old), it should fire straight up...