Yamaha F100B F100C Outboards Factory Service Manual, Page 128Get this manual
Power unit
4Install the camshaft caps in the proper position as shown and with the stamped numbers facing upside down2 7
5Tighten the camshaft cap bolts to the specified torques in two stages and in the sequence shownNOTE: Apply engine oil to the camshaft cap bolts before installationCamshaft cap bolt: 1st: Nm (0.8 kgfm, 5.8 ftlb) 2nd: 17 Nm (1.7 kgfm, 12 ftlb)