H0306B80C, H0306H80C, H0307H80C 1980 SPECIAL TOOLS - TUNE-UP Parts on group SPECIAL TOOLS - TUNE-UP: Pos. Part No Qty Parts name Comments  . FT2910 [0] KNOCK-OFF NUT TO REMOVE FLYWHEEL  . FTA2937-1 [0] TIMING TOOL TO ADJUST SPARK ADVANCE Parts catalog : SPECIAL TOOLS - TEST EQUIPMENT SPECIAL TOOLS - POWER HEAD SPECIAL TOOLS - LUBRICANTS AND SEALANTS SPECIAL TOOLS - LOWER UNIT REED PLATE POWER HEAD SWIVEL BRACKET GROUP