Just bought this boat with mariner 40 hp about 10yrs old seller said its a 4 stroke I think its a 2 stroke Is there a foolproof way of telling difference Telboy
Im assuming that its an inline four. either way i can almost guarentee you that its a 2-stroke especially if its of that vintage. theres a real easy way to check...take off the engine cowl and take a look at the engine. 2 stroke= simplicity...
