I have a 50hp Deto Yamaha engine (90's model- not sure of age) and when you start the engine it runs perfect and will take the revs for the first minute-minute and half then you can hear the engine change tone, after it changes tone it will not take the revs and usually stalls. When you start it back up it runs fine, once again for the 60-90 secs then goes lumpy.
Any ideas? it has had the carbs striped and cleaned, all new plugs.
Also anyone know where I can get a workshop manual for this?
Any ideas? it has had the carbs striped and cleaned, all new plugs.
Also anyone know where I can get a workshop manual for this?
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