2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 77Get this manual
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Power unit Valve clearance (cold): Intake e: 0.20 0.03 mm (0.008 0.001 in) Exhaust f: 0.34 0.03 mm (0.013 0.001 in) 6 Turn the flywheel magnet 360 clockwise7 Check the intake valve clearance for cylin