DURING APPROACH TO HIS HOME AIRPORT, THE PILOT EXPERIENCED A COMPLETE POWER LOSS AS HE APPLIED 20 DEG OF FLAPS. HE DETERMINED THAT HE COULD NOT MAKE THE RUNWAY AND ELECTED TO EXECUTE A FORCED LANDING TO A DIRT ROAD. ON SHORT FINAL, THE PILOT SPOTTED POWER LINES AND ENTERED A SHALLOW CLIMB TO CLEAR THEM; HOWEVER, THE RESULTANT LOSS OF AIRSPEED INDUCED A STALL AND THE AIRPLANE IMPACTED THE GROUND. THE PILOT STATED THAT HE BELIEVED A TANK UNPORTED WHEN HE LOWERED THE FLAPS. 5 GALS OF FUEL WERE DRAINED FROM EACH WING TANK DURING RECOVERY. THE FLIGHT MANUAL INDICATED 2.5 GALS PER SIDE IS UNUSABLE.