2009 Yamaha F40 Outboard Service Manual, Page 355Get this manual
Maintenance 3Tilt the outboard motor to the fully up position, and then support it with the tilt stop lever to check that the lock mechanism of the tilt stop lever works properly
3Check that the pin is aligned with the alignment mark on the shift bracket b
Checking the hydro tilt system
1Check that the outboard motor tilts up and down smoothly when the tilt lock lever is in the release position a