Dual-engine binnacle trim and tilt switch, typically used on 2006 and newer 704 twin-engine binnacle control boxes to control both outboards from a single thumb switch.
Part Supersession Warning
If you are having trouble sourcing the exact 704-82563-51-00 part, keep in mind that Yamaha has officially superseded this part number twice in its catalog chain:
Old Part Number: 704-82563-50-00
Sought Part Number: 704-82563-51-00
Current/Newest Part Number: 704-82563-52-00 (Listed as \"Trim & Tilt Switch A\")
Designed to fit 2006 and newer Yamaha 704 Twin-Engine Binnacle Control Boxes.
Controls Both Engines: It is the main, thumb-operated switch built into the side of the port control lever handle. Clicking this switch trims both outboards simultaneously.
What it does NOT fit: It will not fit single-engine 704 control boxes (which use a different handle grip/switch shape), and it will not physically fit older style \"round-top\" 704 binnacles made in 2005 or earlier (which use switch part number 704-82563-31-00).
Engine Compatibility (The Electrical Wiring)
Electrically, the switch connects directly to the trim/tilt relay harness. Because it controls the main trim circuit, it is compatible with a wide range of twin-rigged Yamaha outboards from 2005 to 2017, including:
F115 (2005–2017)
F150 (2005–2017)
F200 (2005–2017)
F225 (2005–2016)
F250 (2005–2016)
F300 (2005)