Old evinrude 7.5 fleetwin

NitroBoy543

Seaman Apprentice
Joined
Mar 30, 2002
Messages
40
Hi, i have a old evinrude 7.5 hp 2 clylinder engien. i am not at my house now but ill get the serial # when i get home, my question is, where are the water intake for the water cooling system? thanks
 

NitroBoy543

Seaman Apprentice
Joined
Mar 30, 2002
Messages
40
Re: Old evinrude 7.5 fleetwin

i forgot, i dont have a manual, where can i get one? and can i run it on a leaner oil, i am currently running it on a 16 to 1 ratio, i was thinking maby jump to 32 or 40? thanks
 

62_Kiwi

Lieutenant Junior Grade
Joined
Jan 20, 2002
Messages
1,159
Re: Old evinrude 7.5 fleetwin

Hi Nitro Boy<br /><br />For manuals click on the link above called "Manuals" (always support our sponsors).<br /><br />Another place to look is http://www.evinrude.com and click on "Docktalk". In there you will find how to source manuals and you can also look up the year of your motor once you have the model number.
 

humblechoice

Seaman
Joined
Feb 12, 2002
Messages
66
Re: Old evinrude 7.5 fleetwin

all models are equipped with a rubber impeller which is mounted on and driven by the drive shaft in the lower unit, water enters the lower unit gearcase through an opening in the rear of the antiventilation plate
 

NitroBoy543

Seaman Apprentice
Joined
Mar 30, 2002
Messages
40
Re: Old evinrude 7.5 fleetwin

Allrighty, i got the serial number, it is,7518-39034 :) <br /><br />edit: i got the date, its a 1955 ( wow, thats old) and i cant find any manuals...., where is the antiventalation plate located? what dose it look like? how much would it be worth?
 

62_Kiwi

Lieutenant Junior Grade
Joined
Jan 20, 2002
Messages
1,159
Re: Old evinrude 7.5 fleetwin

Hi Nitro Boy<br /><br />7518 must be the model number, which makes the year 1955. The rest is the serial number.
 

Chinewalker

Fleet Admiral
Joined
Aug 19, 2001
Messages
8,902
Re: Old evinrude 7.5 fleetwin

Hi NitroBoy,<br /> Your 1955 Fleetwin is a good little motor. The water intake is through a screen in the rear of the lower unit, on the leading face of the exhaust outlet.<br /> Most of the water exits through the exhaust, but some will come out the exhaust relief hole, about midway up the rear of the leg of the motor. You should have a good solid spray, like a faucet without an aerator.<br /> Make sure you run that motor at 25:1 on the fuel/oil mix. I just rebuilt a similar motor with a new block due to the old block having been "ventilated" by flying connecting rod chunks - caused by running it at 50:1.<br /> As for worth, I recently picked up a complete one in need of a tune-up for $75.00. Evinrude built a lot of them - the serial number portion of yours being over 39,000. Let me know if you need any parts for it, as I have some leftover odds and ends from my recent project...<br />- Scott
 

NitroBoy543

Seaman Apprentice
Joined
Mar 30, 2002
Messages
40
Re: Old evinrude 7.5 fleetwin

do you have any of the original spark plugs? mine all have the bar bent out of shape..., also you know the intake pipes on either side of the engien? are there air filters in there? when i test ran it in a garbage pail, i ran it for like 30 minuets, then i hosed the thing off, and ran it in a bucked wiht clean water for like 5 seconds to wash out the water intake. am i better off running it and tunig it in my garbage pail, or running it wiht a hose attachment? thanks again
 

alcan

Commander
Joined
Dec 14, 2001
Messages
2,505
Re: Old evinrude 7.5 fleetwin

Hi NitroBoy<br />The spark plugs you can get at any good auto parts store. Champion J4C is the new # this replaces the J4J. Those intake pipes are Air silencers, they are basicly mufflers. They are to make the motor more quite. They filter nothing, and unless you can see a blockage they do not require service. Making final adjustments is always done in a tank,etc. The water creates back presure you will need for proper adjustment.
 
Top