Honda BF50 (5HP), BF5A Outboard Motors Shop Manual 2014, Page 47Get this manual
BF50BF5A
Follow Valve Seat Cutter Manufacturer's Instructions
SOLID PILOT BARS 5.50 mm No07781-P03010A 5.52 mm No07781-P03020A 5.55 mm No07781-P03030A T-WRENCH #505 No07782-P010l0A T-WRENCH ADAPTER #5031 No.07782-P01020A ACCESSORY PACKAGE #246 No.07782-P01030A VALVE SEAT CUTTERS 600
3) Using 45 cutter, remove enough material to produce smooth and concentric seatTurn the cutter clockwise, never counterclockwiseContinue to turn the cutter as you lift it from the valve seat
NO.07780-P01050A
NO.07780-P01040A
No.07780-P01030A
4) Use the 31 and 60 cutters seat so that it contacts the 31 cutter removes material cutter removes material from the width of the finished valve
to narrow and adjust the valve middle of the valve faceThe from the top edge The 60 the bottom edgeBe sure that seat is within specification