THIS WILL NOT WORK WITH ELECTRIC START CLONE ENGINES AND YOU MUST USE YOUR OLD PULLSTART AND LEFT SIDE CASE SOME OF THE ENGINES THIS WILL WORK ON ARE THE LIFAN, ZONGSHEN, AND JIALING 50CC 70CC 90CC 100CC 110CC 120CC 138CC 140CC KICK START ONLY ENGINES (sorry won't work on the lifan 150's) THIS WILL REQUIRE YOU TO MAKE MODIFICATIONS TO THE ORIGINAL ATC70 LEFT SIDE CRANKCASE COVER, SEE SOME INSTRUCTIONS BELOW ON THIS PAGE. BC1001/FW&CAGE/99E/3EA6X25PH @ REMOVE THE NEW FLYWHEEL COVER FROM NEW ENGINE @ PULL THE FLYWHEEL OFF WITH SAME PULLER AS ANY ATC70 TAKES,, ALSO ON THIS PIC SEE THE PROBLEM CAUSING CDI PICK UP UNIT @ REINSTALL THE NEW CAGE/FLYWHEEL @ THIS PICTURE SHOWS WHERE ALUMINUM NEEDS TO BE REMOVED WITH DREMMEL OR 4" DISK GRINDER, SO THE CASE WILL CLEAR THE NEW CDI PICKUP UNIT @ THIS PICTURE SHOWS WHERE TO ADD SOME POP OR BEER CAN FLAT ALUMINUM AND SEALER , TO SEAL OUT DIRT AND WATER FROM FLYWHEEL CAVITY @ ADD THE SPACER PLATE,, GASKETS IF YOU WANT THEM AND YOUR OLD PULLSTART, AND BOLT BACK ON NEW ENGINE @ THESE ARE NEW FLYWHEELS AND CAGES FOR THE ATC70 PULL START, THEY ARE MACHINED FLAT,, THEN DRILLED AND THE HOLES FILLED WITH WELD IN 2 PLACES @ (15) OEM NOS PULLY BOLTS TO FLYWHEEL FOR STARTER ATC70'S 28430-957-014 1/19B (99B) these are discontinued, but we found a few 099B @ *GASKET_PULL START_ATC70 28440-937-306 7/20A (99E) 99E @ Z86'd*(1) ATC70 RECOIL_STARTER COMPLETE_ASSY (oem_Honda) 1981_to_1985 (73_to_80_READ) (99F) EXED sorry discontinued 099F @ 6MM X 20MM PAN HEAD SCREW 337804 @ HERE IS A KIT IN ACTION ON A CUSTOM ATC70