Coolant Flow 2015 AR210 LAT1100B Engine

[Seagar Lounger]

Hello everyone,

I'm looking for a coolant flow diagram or some information on the raw water path through the engine. I'm troubleshooting an overheat on my port motor and I want to make sure I don't miss any passageways. I'm thinking about pulling the head but the cams are intimidating me, about to pull the exhaust manifold to see what I can see.

Any solutions for dealing with engine scale without pulling the head would be appreciated too.

Thanks everyone!!

 

[David Martin]

First thing I would do when embarking on this quest is get yourself a dealers service manual..........they can be had at reasonable prices on line as electronics manuals and most allow you to print out a paper copy..........well worth it if you like doing service work yourself.

 

[Seagar Lounger]

Thanks Dave, do you have a particular website you used?

 

[Seagar Lounger]

Pulled the exhaust manifold, 1 and 4 were pretty blocked up, working on cleaning the head ports now, has anyone back flushed from the thermostat to check flow?

 

[David Martin]

emanualonline.com I think this is the one I used.............4 years ago just before covid.......was a little less costly back then but still not bad if you want to DYI on your own.
Yamaha AR210 SR210 SX210 Boat Complete Workshop Service Repair Manual 2012 2013 2014 2015 2016 (emanualonline.com)

 

[FSH 210 Sport]

You need to pull the thermostat and check it per the service manual, or better yet drop in a new one.

Are you boating in salt water? If so are you flushing with salt away after each outing? How many hours on the engines? Do you wet slip the boat?