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  1. K

    Auction purchase 1973 18hp evinrude issues

    Yea I'm thinking it's an air leak somewhere and I'm ok with that. Half the fun is taking a rough looking non running old motor and bringing it back to life. The only thing I haven't gone through yet is the power head and I'll have less than $300 into it and that's adding electric start taken...
  2. K

    Vintage Johnson dual line gas tank - fit Evinrude 5.5?

    I have 2 of the 50's Evinrudes that take the pressure tanks and like you I thought about converting them to single line and actually did on the 1958 7.5hp. But after almost running it on a 50/1 mix I unhooked the pump and went back to pressure tanks this way I know if its a pressure tank it's...
  3. K

    Auction purchase 1973 18hp evinrude issues

    I've cleaned the carb 3 times the last time I blew a lot of cleaner and compressed air through the low speed circuit. I do have a 1965 18hp carb I can try on it, although not the same if it requires the same 3-4 turns out it will confirm if there is an vacuum leak before the carb Thanks for the...
  4. K

    Auction purchase 1973 18hp evinrude issues

    I picked up a nonrunning 1973 18hp evinrude cheap at auction after cleaning the carb, replacing the water pump changing the oil in the lower end, new spark plugs, replacing one ignition coil and the pickup coil resetting the points and changing the condensers I now have a running motor. Only...
  5. K

    1958 Evinrude 7.5hp 7524 Poor Idle

    The 1958 now purrs like a kitten. I'm not 100% sure but when I changed the water pump I noticed the lower crank gasket was bad I made a new one and reassembled it and it now runs perfect
  6. K

    1981 Mercury 25hp No Top end power

    On the way in from fishing the 1981 Mercury 25hp suddenly started to run very badly above 1/2 throttle at first I thought it just fouled a plug But it didn't. So far I've installed new plugs cleaned the coil terminals cleaned the carburetor and fuel pump and replaced all the gaskets changed the...
  7. K

    What is the best repair manual for a 1981 mercury 25 hp

    I have a 1981 mercury 25hp electric start motor that I've been working on that runs great at idle and mid range but has no top end at all. I have gone through the carb and fuel pump replaced the gaskets and cleaned it, it has 125 psi compression I noticed it has replaceable main jets but I...
  8. K

    1958 Evinrude 7.5hp 7524 Poor Idle

    Picked up a very nice 1958 7.5hp Model 7524 at auction today. After checking it all out 92psi compression on both cylinders new champion plugs gaped at .028 It runs very smooth anywhere above the start position, less than that not at all. I cleaned the carb and all the passages not much change...
  9. K

    1955 evinrude fleetwin 7.5 parts source and interchange-2

    Hi I'm still looking for a piston with rings and rod for a 1955 Evinrude 7518 I did find a crankshaft If anyone knows what other years or models used the same piston and rod it would be greatly appreciated. I do have a parts list for 7518-7519 models but not for any others Thanks Mike
  10. K

    Part numbers needed for 1955 evinrude 7.5 fleetwin 7518

    Hi looking for part numbers for the powerhead Rods,crank and pistons at a minimum Thanks Mike
  11. K

    1955 evinrude fleetwin 7.5 parts source and interchange

    I have a 1955 fleetwin 7.5 that's been in the family since new that I'd like to put back into service. Last used by me 35 years ago. It has seen very limited use over the years but has no spark at the moment. I took the side covers off for a look see at the pistons and cylinders, they look...
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