1973 Evinrude 9.5hp

[LakeCityYankee]

Hello all, <br /><br />Just found this site and have been searching through for something that may help me. This one sounds close:<br /><br /> http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=28;t=014515#000000 <br /><br />However Im not too sure how to proceed. I just bought the boat and the guy I bought it from never put stabilizer or ran the engine dry before putting it up for the winter. It wont stay running but if ya drip gas in the carb it runs fine. He has a new "fuel pump?" on it, a little square box with a big thumb screw in the middle of it... he called it a fuel box... Ive called around to a few shops and they say that, to clean the gunk from sitting, outta it removing and rebuilding the carb is the best way to go. Ive rebuilt Holleys and Rochesters, 1, 2 and 4 barrels in the past. Im thinking this carb shouldnt be any more difficult. Am I right? Should there be anything I need to be aware of? Is it possible for me to remove the carb and clean it out without purchasing a rebuild kit for the time being? I'd just like to clean the gunk/build up outta the carb to get it running. Any and all help would be greatly appreciated. <br /><br />Jared

 

[OBJ]

Re: 1973 Evinrude 9.5hp

Hello Jared and welcome to iboats!<br /><br />If you've rebuilt Holley's and Rochesters, the little 9.5 should be a walk in the park.<br /><br />Go over to the local neighborhood John/Rude dealership and get a rebuild kit. It'll have all ya' need to to redo the carb. We've found the best procedure is to soak the carb, hit the passages with choke & carb cleaner in a can then follow up with compressed air.<br /><br />Shooting fuel into the throat is the give a way. Probably the high speed jet and lift tube are gunked up.<br /><br />As with all things mechanical, a service manual would be a big help to you.<br /><br />If you have any other questions, don't hesitate to post.<br /><br />By the By, get the kit.....it'll have up to date gaskets and such so the rebuild will last for a while.

 

[LakeCityYankee]

Re: 1973 Evinrude 9.5hp

Thank you so much Obj! I feel so relieved to hear that it shouldnt be too big of a job. I'll let ya know how it goes. <br /><br />Jared

 

[LakeCityYankee]

Re: 1973 Evinrude 9.5hp

Help again please. I removed the carb. There wasnt much gunk in it really. As clean as it appeared it should have run fine. Atleast from what I can check, the float bowl and spraying carb cleaner through the passages. <br />I removed the needle and it looks fine, tho is a rubber tipped one, which I have never seen in a carb, tho Ive only rebuilt car carbs. The float looks to be made out of cork with some sort of coating on it. Also when I unhooked the fuel line (the one with the bubble in it from tank to motor) I realized it had a lot of water in it. The gas in the can seems ok tho (I filled a glass up using the bubble after I cleaned the line out thoroughly and saw no water in it after letting it sit for 30 minutes)Think I should dump all 5 gals anyway? <br />Anyway, I put it all back together and it still doesnt seem to want to run unless I put gas in the carb. Am I missing something? Or could air be being sucked in through a gasket be causing this? Ive got a manual on the way via USPS but I just cant bring myself to just looking at it and not trying to see if I can get it running before hand.

 

[LakeCityYankee]

Re: 1973 Evinrude 9.5hp

Oh and... I almost forgot... when I have rebuilt car carbs in the past we had a rule of thumb which was to set the lean rich adjustment all the way in and then back it out 2 1/2 turns. Whats the best way to set the lean rich adjustment to start off on my motor (73 Evinrude 9.5)? <br /><br />Thank you Jared

 

[20/20]

Re: 1973 Evinrude 9.5hp

if you you redid the carb did you make sure the pump was also good? Just because someone said they put something new on doesn't mean they did it right? I once bought a 4hp from a shop the guy said it was rebuilt and ran great. Well it did look real good and even ran for a few minutes then poof it died. Come to find out he had forgot to tighten the bolts in the head which caused the gasket to blow. Mistakes can happen even with the best of the best. If your working with a fuel problem then start with A and clean{replace what is needed} everything till you get to Z. It doesn't do any good to fix Z if A was the problem to begain with. Check any filters lines gaskets, check for water and dirt in gas. Hope this helps it's hard to fix a problem without seeing the engine. good luck.

 

[LakeCityYankee]

Re: 1973 Evinrude 9.5hp

Im not sure where the fuel pump is... I believe I know where it is but cant say Im positive... <br />Here is a picture of what the guy I bought the motor from called a fuel box... is that the pump? The tan & black thing with the 4 silver screws? <br /><br /> http://img.villagephotos.com/p/2005-2/957522/sideview.jpg

 

[20/20]

Re: 1973 Evinrude 9.5hp

Yes that is it, it works off of a bunch of diaphrams{sp}. If they were taken out and put in wrong, riped, dirty, etc... then you will have troubles. You will want to get a diaghram of how everything fits.

 

[fireman57]

Re: 1973 Evinrude 9.5hp

You will want to get rid of the cork float. Dealer should have a new plastic one for it.

 

[LakeCityYankee]

Re: 1973 Evinrude 9.5hp

oh ok cool thank you. where can I get a diaphram? will a basic evinrude manual have one? <br /><br />Yeah I was thinking that the cork float was way out of date. Thank you.

 

[wayne h]

Re: 1973 Evinrude 9.5hp

from the pic it looks to me like u only took half the carb off the motor.u have to make sure u take of the float bowl drain screw and make sure its all clean in there. there is a jet behind that bolt. take the hole carb off not just the top half.also the fuel lines look old and i dont see any clamps on them. replace them and use plastic wire ties

 

[Timbertim]

Re: 1973 Evinrude 9.5hp

Looks like you are having the same problems I had. Thanks to the fellas here I got mine running. I had to soak my carb twice to get the junk out of it. Make sure you get the jet out that is behind the drain plug. You have to take the whole thing off to get this done. Mine runs great while I pump the bulb and I'm waiting for a new kit for the fuel pump, which you had pictured.

 

[hornlake]

Re: 1973 Evinrude 9.5hp

I believe the setting for the low speed jet is 1.5 turns counterclockwise.

 

[LakeCityYankee]

Re: 1973 Evinrude 9.5hp

Thank you for the help all. I got her running and she seems to run great. One thing though, It seems more often than not I need to spray starting fluid into the carb to get it to crank over easy. Once I do that, one pull and its running until I kill it. If I dont do that then it could take a dozen+ pulls to ge started. What would cause this?

 

[wayne h]

Re: 1973 Evinrude 9.5hp

decarb the engine it should help. try not to use starting fluid because there is no oil in that and u are running cylinders dry even for a second its not good.... decarb and make sure your neighbors have there windows closed

 

[LakeCityYankee]

Re: 1973 Evinrude 9.5hp

what do you mean by "decarb the engine"? I'm new to this stuff

 

[wayne h]

Re: 1973 Evinrude 9.5hp

there is a decarb spray that u get at the local outboard dealer all dealers have it u spray it in the carb when the engine is running untill the can is almost gone then u spray it really heavy untill the engine stalls out. let it sit for about 10-30 mins this is a good time to bring her to the lake then run her like u stold it. changing rpms and running her out. this will get all the cardon off the rings pistions and out of the exhuast. after does that its a good idea to change the plugs with some fresh new 1ns. this will help raise the compression works well on old motors. they tell u to decarb every 500 hours i think but no 1 ever does that. i have had old motors where it has never been done at all. remember to run her in a barrel when doing this also remember she will smoke like crazy but thats what u want. i usually do mine every season before my first trip to the lake.u will be surprized what an 8 $ can of spray and some fresh plugs will do for u enging

 

[20/20]

Re: 1973 Evinrude 9.5hp

I agree with Wayne try not to use starting fluid not good for 2 stroke engines. Glad to here you got it running.