2001 SX250 OX66: cooling system bypass valve?

[Robert Louis]

Does a SX250 OX66 have a cooling bypass valve (before thermostats open)?

Is the telltale water spray before or after flowing through the heads?

Where is the best place to find a diagram of the cooling system flow path?

I have the (362 page) service manual, Yamaha LIT186160202, but I don't see a cooling flow diagram in it.

Thanks in advance for any feedback.

[boscoe99]

Does a SX250 OX66 have a cooling bypass valve (before thermostats open)? Yes.

Is the telltale water spray before or after flowing through the heads? Before.

Where is the best place to find a diagram of the cooling system flow path? See below.

I have the (362 page) service manual, Yamaha LIT186160202, but I don't see a cooling flow diagram in it. Not in there.

Thanks in advance for any feedback.

You are welcome.

[Robert Louis]

Thanks Boscoe, answers appreciated.
The Yamaha Service Manuals are great for the diagrams, but doesn't tell you much beyond (but you already know this).
Was your link to the cooling flow diagram attached? I don't believe I saw one 'below'.
Also, I think my overheating problem is due to a thermoswitch or thermosensor problem. If I use an ohm meter on the thermosensor, what should the values read (hot and cold)?.
Thanks, Appreciate any feedback.

[boscoe99]

Photobucket is not working for me at the moment for some reason.

In the general specifications section of your SM you will find specifications for the thermoswitch and the thermosensor. If you can't find it let me know.

[Robert Louis]

Yes, specs on page 2-6, mea culpa, I was looking under general specs (their in the maintenace specs).
I'll check photobucket later. Again. Thanks for your time.

[boscoe99]

Diagram for Robert Louis

I got it to work. See above.