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Year

70 Evinrude problems

fireman1146 I've got a 1975 70 hp Evinrude. When i took the boat out the engine would run,but only with the warm up leaver up, then when I tried to throttle up it would die. I'm new to working on outboards, dont know much.Help!! 2002-03-30
djohns19 Fireman,

We'd like to help. Give us a little history and engine info. Mod# Ser#, etc. The numbers will be located on the engine bracket that attaches to the boat. Usually on the left side, looking from rear.
2002-03-30
fireman1146 The model # is 70573F serial # J0015462. Had the boat a little over 1 year. Ran pretty good last year to me. Felt somewhat slugish on takeoff and takes a few min to plane out. The boat is a 12 ft. Norris Craft bass boat. 2002-03-30
J.B. Cornwell Howdy, Fireman.

There must be a misprint here. I read a 12 foot bass boat with a 70hp engine on it. That sounds more like a rocket sled than a bass boat. Even with only 2 cylinders firing it ought to jump out of the water when you open her up.

Your symptoms are classical fuel starvation.

Set us straight on the details of your boat and some history.

Red sky at night. . .
JB [Smile]
2002-03-30
fireman1146 Sorry, I went back and checked it agian. Its a 1975 16' Norris Craft with a 70 hp Evinrude outboard. The boat is rated up to an 80 hp. Sorry agian. Im still new to boating, about all I know about boats is how to fish out of them:) If there is anything else you need to know just ask. 2002-03-31
fireman1146 Dont know much history of the boat. Only had it a little over a year. It was my grandfathers, he baught it about two years ago and im left to get it ready this year and he is not around to tell me any history. sorry. 2002-03-31
novacane sounds likes shes runnin lean garbage in the carb ill bet a parshall block of a main jet or air bleed rip off the top air horn of the carb clean it out real good bugs love to crawl thru these tunnels in your carb if it sits for some time ck float leval for get spec if it aint handy, rule of thumb that it be some what level,
comon sence thing, have fun, easy on runnin it till
its repair lean engine will lead to dead engine
youll fry it in a heartbeat
2002-03-31
J.B. Cornwell Okay, Fireman, I have a better picture now.

Your engine needs a complete physical exam.

1. Get a service manual that covers it. Clymers has a good one for about $35. It is #B736.

2. Run a compression check. All cylinders s
2002-03-31
fireman1146 many thanks guys. Ill try that and let yall know when i get it fixed and how it does. [Smile] 2002-03-31
fireman1146 thanks guys. It worked. Cleaned carbs and installed new plugs, throttle linkage ok. Have not taken her to the lake yet but she ran great on the muffs, no more idle problems. Hope to get to the lake later this week. Let yall know how she does in the water. Again many thanks. Know a little more now. 2002-04-02

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