2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 139Get this manual
Cylinder head NOTE: Install the camshaft caps in the proper position as shown and with the stamped numbers facing upside down 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) Timing chain tensioner bolt: 12 Nm (1.2 kgfm, 8.7 ftlb)
4Install the camshaft caps, and then tighten the bolts to the specified torques in two stages and in the sequence shown5Install the timing chain tensioners 1, and then tighten the bolts to the specified torque in the sequence shown