I was always under the conventional wisdom that most 2 strokes required a 50:1 premix ratio.
Two years ago, I bought a 1988 yamaha 4 hp outboard and it had a sticker on it 100:1 which always made me nervous so I mixed at 75:1 to be safe.
I have the carcass of a 1985 evinrude 15hp and just noticed it also has a 100:1 sticker near the fuel hook up.
I just bought a 1996 Evinrude 9.9 2 stroke and there are no stickers on it and I don't have the manual. What is the correct premix? I bought it from a guy who had never used it because it came with a sailboat as an emergency motor. He cleaned the carbs and I hooked up fresh 50:1 mix and it started on the 3rd pull.
I ran it in a test tank and it starts and idles excellent, but falls flat at about 1/2 throttle. it goes full throttle with the choke on.
I am not very mechanical, so I will bring it in to have it serviced. However, I know if I mix the oil too rich, I will have similar fouling and rough running issues. If anyone can point me to the correct place, I would appreciate it.
Two years ago, I bought a 1988 yamaha 4 hp outboard and it had a sticker on it 100:1 which always made me nervous so I mixed at 75:1 to be safe.
I have the carcass of a 1985 evinrude 15hp and just noticed it also has a 100:1 sticker near the fuel hook up.
I just bought a 1996 Evinrude 9.9 2 stroke and there are no stickers on it and I don't have the manual. What is the correct premix? I bought it from a guy who had never used it because it came with a sailboat as an emergency motor. He cleaned the carbs and I hooked up fresh 50:1 mix and it started on the 3rd pull.
I ran it in a test tank and it starts and idles excellent, but falls flat at about 1/2 throttle. it goes full throttle with the choke on.
I am not very mechanical, so I will bring it in to have it serviced. However, I know if I mix the oil too rich, I will have similar fouling and rough running issues. If anyone can point me to the correct place, I would appreciate it.