2000 50 HP ELPTO Cooling bypass

[joey nathan]

3 cylinder, 3 carburetor 2-stroke
Intermittent warning buzzer; have eliminated oil reservoir as it is full. Strong stream from tell-tale of warm water. Pulled, inspected thermostat, temp sensor and nothing apparent. Is there a bypass water valve on this engine? Should I just replace 'stat and sensor as they're 18 years old? Thanks in advance...

 

[joey nathan]

Also, the link to the service manuals in the stickies is broken - I could use a service manual for this as well...

 

[schematic]

did you bypass the low oil sensor?
Does it have a "water in fuel" sensor?

 

[joey nathan]

No, how would I bypass low oil level? Oil res is full to the top. Does not have water in fuel sensor. Warning is coming on after 30-40 minutes of running.

 

[schematic]

is it a constant beep or intermittent beep?

 

[joey nathan]

constant beep

 

[GA_Boater]

Did you drop the thermostat in a pot of heated water to see if it's actually working? Good and bad stats look the same.

How long since impeller service?

 

[joey nathan]

Doh! Thanks GA Boater It is the impeller after all. Can someone help me with a kit part number? 2000 50HP ELPTO / Serial number 0T097810 - 3 cylinders, two-stroke, with three carburetors

 

[GA_Boater]

Here ya go, all the OEM parts - http://ww2.iboats.com/Gear-Housing-...552808--session_id.124724140--view_id.1696628

 

[joey nathan]

Shout out to all who responded. This task not too bad really, I did it standing along the shoreline in water maybe 1 1/2 feet deep! The ladder on this pontoon served to hold the leg while I actually swapped out the impeller. Everything went according to Hoyle, and it took me around 90 minutes - with the gasket parts $27. BTW, 1 fin of the impeller compromised which no doubt contributed to the over heating symptom. No idea how long / number of hours service on it but confident this was the problem. Thanks all y'all...Jon