40hp Yamaha hard to start when hot

[Baza]

On a recent service of my 40hp 2001 model outboard the service mechanic found that the thermostat had been removed and a flat washer put in place of . The mechanic replace the washer with the correct thermostat for that motor and advised me of what he had found .
Since this has been replaced I had trouble starting my outboard when the moter is hot .
I have found if I remove the fuel line and bleed off the fuel I can prevent the problem from occuring .

Has any one heard of this happening before ?

Baza

[Ken]

Baza,
I would check the fuel line to the fuel filter, from the filter to the pump, and from the pump to the carbs - make sure the fuel line is not touching the engine block anywhere. Sounds like you are experiencing vapor lock.
Good luck [img]smile.gif[/img] ,
Ken K