you've got a thru-hub exhaust if you can find exhaust holes over the engine gearcase across the prop shaft. Non thru-hub is sound around the prop hub. Non Thru-hub Exhaust finish the form below and certainly one of https://rafaelhzyz973600.daneblogger.com/29210980/how-much-you-need-to-expect-you-ll-pay-for-a-good-yamaha-outboard-motor-for-sale