Outboard. Very new at this

dscott99

Recruit
Joined
Jun 25, 2002
Messages
4
I have a 75 HP chrysler outboard that is been siitting for a long time. What should I do to it before I atempt to start it. Plus how is it done. Thank you and sorry for the stupid questions. oh one more thing. What is the oil gas mix ratio for this engine
 

MGuckin

Senior Chief Petty Officer
Joined
Jun 10, 2001
Messages
760
Re: Outboard. Very new at this

You should be posting this topic in the engine trouble section.
 

Brew

Petty Officer 2nd Class
Joined
Jun 9, 2002
Messages
121
Re: Outboard. Very new at this

Hi DScott,<br /><br />I'm fairly new to the outboard world as well, but since no one else has replied yet, I figured I throw in my 2 cents worth. If nothing else, it will get your post back to the top of the list.<br /><br />For starters, make sure you are using fresh gas and oil. The standard gas/oil ratio is 50:1 and I assume that this engine would fall into the "standard" catagory.<br /><br />I'd follow the fuel line through the engine and locate a fuel filter/bowl (typically they are a see through plastic). If gas is evident within, remove the filter/bowl and get rid of old gummed up gas or replace filter.<br /><br />I'd change the plugs too. You can use the numbers on the existing plugs to get the appropriate new ones, but a better solution is to track down a repair manual and look up the proper plugs. Manuals are usually only about 20-30 bucks and can make life way easier when doing simple repair/maintenance.<br /><br />I'd change the oil in the lower unit (leg) of the motor. There will be two screws about a foot apart near the bottom of the motor (see manual). Remove both, drain old oil, fill with fresh gear oil from bottom hole until comes out top hole. Replace top screw, then the bottom (with top screw in, little oil should come out bottom before you get the bottom screw in). Depending on the condition of the screws/washers, you might want to replace those while you are changing the oil. If the oil you drain out is a milky colour, you definitely want to get new washers as water has leaked into oil.<br /><br />When you try to start it, make sure the engine is either in the water or hooked to a set of muffs (they look like ear muffs that you hook a hose to and supply the motor with water while on land). :) <br /><br />If she don't go after the above, repost with more details about what happened and I'm sure someone with more experience will be able to help.<br /><br />Good Luck!!<br /> :)
 

MGuckin

Senior Chief Petty Officer
Joined
Jun 10, 2001
Messages
760
Re: Outboard. Very new at this

I stand corrected your post was transferred here by the forum administrator.<br />First and most important buy a manual or try your local library. Do some research on the motor and become familiar with it.<br />I would make sure the motor turns easily first by hand with spark plugs out. Squirt some wd40 in each cylinder while turning will help lube the cylinder walls. It won't hurt and when fired up will just blow out.<br />Everything Brew said sounds good so no reason to repeat.<br />You most likely will end rebuiling the carbs as they do tend to varnish after sitting but you can still try to start the motor first.
 

hltenterprises

Petty Officer 3rd Class
Joined
Jan 18, 2002
Messages
93
Re: Outboard. Very new at this

One of the first things to do is find a manual for your engine. I got my on Ebay. Kencook marine is another good source. I am going througn the same thing on my Envinrude. If you have a tech school in your area that offers marine repair consider take the course. You must realize that you are dealing with a 2 cycle engine vs a 4 cylcle auto engine. <br /><br />As far as the engine itself if possible do a compression check to see if you need to do a complete rebuild. <br /><br />You may want to read JB,s post on guides for posting <br /> http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=17;t=009035 <br /> <br />Also there is no need to post the ame message in both places. Welcome and Good luck
 
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