2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 101Get this manual
Power unit
6Install the camshaft caps in the proper position as shown and with the stamped numbers facing upside down7Tighten the camshaft cap bolts to the specified torques in two stages and in the sequence shown
NOTE: Apply engine oil to the camshaft caps and camshaft cap bolts before installationCamshaft cap bolt: 1st: Nm (0.8 kgfm, 5.9 ftlb) 2nd: 17 Nm (1.7 kgfm, 12.5 ftlb)