Engine Mystery

[Samurai_Dave]

I've bought a 50hp Yamaha engine to go on my boat, its a two stroke with oil injection and power tilt and trim. It seems to have a drive a by wire gearbox as there is no gear lever on the side as normal. I have two questions:

1- Where should the ID plate be as I cant find it? I really need to get an owners manual for the engine. Can anyone suggest what the official model is? The seller believed the engine to be circa 1994.

2- There is no obvious hole for the wire connection cable to go through, should there be an external connector?

Thanks.

 

[lenseman]

Welcome to the YBW forums.

. . . . . Where should the ID plate be as I cant find it? I really need to get an owners manual for the engine. Can anyone suggest what the official model is? The seller believed the engine to be circa 1994. . . . .

The engine number which includes a date code should be found on the left side of the mounting bracket.

Engine Plate:
http://www.marinshopen.se/Motorer/OmMotorer/Yamaha/Fastställmotornummer/tabid/346/Default.aspx
Date Code:
http://www.marinshopen.se/Motorer/OmMotorer/Yamaha/Fastställårsmodell/tabid/366/Default.aspx

If it is not there, it might once have been a stolen engine?

. . . . There is no obvious hole for the wire connection cable to go through, should there be an external connector? . . . .

I believe the engine controls are on the right side and you should find two holes (¼", 6mm) to allow cables. Can you see the engine linkages inside the engine, once the cover is removed. Follow these linkages and try to find where the cables enter the O/B below the cover.

 

[Leonidas]

I've bought a 50hp Yamaha engine
I really need to get an owners manual for the engine. Thanks.

May iI suggest you try www.outboard-engine.com site and www.outboardexpert.com . You may be able to obtain the manual for $14.95.

 

[alahol2]

Check e-bay, you used to be able to find a CD workshop manual for all Yamahas from 84-96 inclusive. Not expensive.