THE PILOT REPORTED THAT HE LOST ENGINE POWER DURING INITIAL CLIMB AT 200 FEET AGL. HE FURTHER REPORTED THAT DURING THE FORCED LANDING, THE AIRCRAFT STRUCK SOME TREES AND HE LOST CONTROL. EXAMINATION OF THE AIRCRAFT BY A FEDERAL AVIATION ADMINISTRATION INSPECTOR REVEALED THAT THE REAR FUEL LINE WAS PLUGGED. THE RIGHT FUEL TANK CONTAINED 10 GALLONS OF FUEL.