Yamaha 50hp overheating??

[ZodiacFuturaMk2]

I have a 1999 Yamaha 50H 2 stroke outboard

I have a tell tail of water which is warm but not red hot.

The leg of the outboard seems to get very hot and if you splash sea water on it it tends to steam a bit especially after a long run. How hot is the outboard leg supposed to get after its been running for a while??

I also seem to get a lot of steamy exhaust from the point shown on the picture below - what is this outlet as I thought all the exhaust exited though the prop!!??

Many thanks

Gareth

[Nos4r2]

Originally Posted by ZodiacFuturaMk2

I have a 1999 Yamaha 50H 2 stroke outboard

I have a tell tail of water which is warm but not red hot.

The leg of the outboard seems to get very hot and if you splash sea water on it it tends to steam a bit especially after a long run. How hot is the outboard leg supposed to get after its been running for a while??

I also seem to get a lot of steamy exhaust from the point shown on the picture below - what is this outlet as I thought all the exhaust exited though the prop!!??

Many thanks

Gareth

How hot is very hot? Can you hold your hand on it?

The exhaust bypasses the leg at the point you show the gas escaping so that it doesn't have excessive back pressure at low speeds-that's fine.

[ZodiacFuturaMk2]

Its hot but can hot a hand on it - its just when cold sea water hits it it tends to steam. Probably about 40-60 degrees maybe???

G

[Nos4r2]

It's fine then

[prairie tuber]

My Yamaha 40 2 stroke warms up similarly to what you're describing.

[Biggles]

Is this common on engines. I've never seen it before but thats something else to check next time I'm out !!