Bosun's mate 1st class

[Bosun's mate 1st class]

I have a 1996 vintage 75 hp Honda outboard. Is there a way to get the carburetors off of the engine without removing the intake manifold? I can't get to one cap screw that holds the flame arrestor/air box (black plastic can) on front of carbs. so, in the past I have removed manifolds (which always screws up gasket), to get to the carburetors. I have to clean them from time to time. I've been blaming the rough running on fuel problems following long term (6 mo's) storage. I clean carbs and engine runs again. I'm not sure what my current rough running problem is caused by, but I have been using ordinary (87 oct.) gas which I pick up at filling stations near where I use my boat. One mechanic told me the fuel pump diaphragms have been ruined by the ethanol in gasoline, another told me , "no", the ethanol is screwing up your carburetors. So now I'm buying "boat gas" at the gas station. But I'm afraid that I closed the barn door after the horse got out. It's cheaper to clean carbs. than buy those two fuel pumps, so that's where I want to start. Whats the best way to get those carbs pulled off the engine?

 

[Sea Rider]

Re: Bosun's mate 1st class

Change fuel pump diaphragms as suggested, are very important parts that deals with fuel and doesn't last forever; strip carbs and clean is real dip cleaning solution. Removing carbs is another story...

Happy Boating

 

[Bosun's mate 1st class]

Re: Bosun's mate 1st class

I'm unfamiliar with "dipping" carburetors for cleaning purposes. My method involves using aerosol can of carb cleaner. I dissassemble carbs on table with clean cloth under all pieces and go to work. Never have been quite confident that I was doing a good enough job, though. What do I look for when I go to the store for a carb cleaner for dipping?
Regarding fuel pumps. My Honda 75 has two. From what I have read in the past, and can't recall right now, there are two styles of fuel pump for this engine. Are these pumps rebuildable....or do you replace with new?

thankyou for your insight on these carbs. It is winter here...my boat sits under a tarp with snow piled on top and around it. So when the weather breaks (in about six weeks) I'll be digging into the engine to get it ready for spring boating activities.

 

[pvanv]

Re: Bosun's mate 1st class

The Buffalo weather will be nearly 50 today, nearly 60 tomorrow, so now is the time. You can drop by any Advance or AutoZone, or Napa, etc., around Buffalo and pick up a gallon of real carb dip. The generic aerosols are not aggressive enough to do a thorough job in the small passages. You completely disassemble the carb, and submerge all non-rubber parts in the bath for about 4 hours at room temperature. Then blow it out with carb spray. Then carefully reassemble, paying particular attention to float height. If you need a kit, Ancor on Grand Island is the local parts dealer.