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Hello
I recently bought a second hand boat with a Yamaha F80 4 stroke outboard engine with 105 hours.
I asked the mechanic to change oil and spark plugs but he somehow proceeded to remove and clean the carburetors - he said the engine was not running smoothly.
After that it seems the engine is not revving smoothly but it backfires through the carbs when revved. We started to mess with the fuel mixture adjust screws and also with the throttle screws with varying results.
I have read elsewhere that the proper procedure is to use a carb synchronization kit (some sort of pressure gauges) but we have no such tools here.
Is there a way to adjust the carbs so we get a smooth running engine even if not 100% perfect using basic tools ?
Many thanks
I recently bought a second hand boat with a Yamaha F80 4 stroke outboard engine with 105 hours.
I asked the mechanic to change oil and spark plugs but he somehow proceeded to remove and clean the carburetors - he said the engine was not running smoothly.
After that it seems the engine is not revving smoothly but it backfires through the carbs when revved. We started to mess with the fuel mixture adjust screws and also with the throttle screws with varying results.
I have read elsewhere that the proper procedure is to use a carb synchronization kit (some sort of pressure gauges) but we have no such tools here.
Is there a way to adjust the carbs so we get a smooth running engine even if not 100% perfect using basic tools ?
Many thanks
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