johnson '75 50hp won't idle

[rfelk]

Outboard has not been started in two years. I do not know any other history. Good compression of 136. Installed new water pump, new coils, new plugs. Engine started right up with choke and warm-up idle set. Ran smooth for 45 min with warm-up throdle, but would not run at lower idle. Plan on replacing fuel pump. What are the chances that carb needs a good cleaning? Is that a difficult task? What about low idle adjustments? It is a dual carb system. I know I need a manual. Any other advice is greatly appreciated. Thanks in advance, <br />Roger

 

[steam_mill]

Re: johnson '75 50hp won't idle

Throughout last season (I boat every weekend at the cottage) I was having major idle issues with my '72 50 hp 'rude. I rebuilt the carbs myself and guess what? It runs like new. I got a manual and purchased OMC kits for the 2 carbs including float. Took about 3 hours start to finish. As long as you follow the manual, you should not have any problems. Make sure that the throttle and choke butterfy is in perfect sync.<br /><br />Let me know if you want anymore details. jferreira@kronos.com