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  1. rookie456

    complete rebuild 17ft bluefin s170

    Originally I was just going to replace the plywood transom on my boat, as I started taking it apart, I realized everything was rotted, and some mice had been living under my floor. I gutted the whole boat. My plan is to redo the interior of the boat, I am fine with what the exterior looks...
  2. rookie456

    80hp Merc gray sludge from prop

    I have a 1980 80hp Mercury that I have rebuilt. I have been running the motor trying to link and sync and getting the carbs adjusted. The first three times a ran the motor in a tub, after I finished there was a black ring in the tub from unburnt fuel I'm guessing. The last time I ran it on...
  3. rookie456

    1980 80hp mercury tilt and trim blows main fuse going down

    I have a new to me 1980 mercury 80hp ser# 5773499. The tilt and trim was not hooked up when I bought the motor. When I hooked up the tilt and trim, i found out that the motor didnt work, cause it was all rusted inside. I removed the motor and the top of the reservoir and replaced it with a...
  4. rookie456

    1980 80hp Merc carbon build up in exhaust

    I have been rebuilding a 1980 80 hp 4 cylinder Merc. Serial #5773499. I bought it used. Low compression on cylinder 3. The previous owner was able to start the motor when I went to pick it up. A lot of the wiring was corroded and exposed. I could see sparks all over the motor from exposed...
  5. rookie456

    merc 80 hp 1980 ss prop stuck on shaft

    I bought a used 1980 80hp merc. I cannot get the prop off. I have been soaking it with pb blaster, and using a modified wheel puller with chain and hooks around the blades. Today I bought a hydraulic gear puller from harbor freight, hooked it up to the chains, started pumping the handle and...
  6. rookie456

    72 johnson 50hp should I use this cylinder head

    I have a 1972 50 hp johnson, model 50esl72, on a 1987 17' blue fin s170. I bought the boat 2 years ago. Right after I bought the boat I saw the same engine for sale on craigslist for parts, it had a burnt piston, but I bought it for parts. A few weeks ago I was checking my compression on my...
  7. rookie456

    72 johnson 50hp what happened?

    I was doing a spark test today on my 72 johnson 50 hp electric start. I hooked the tester up and then had my son work the starter while I would check to see if the spark would jump 7/16 gap. Top cylinder tested good. When my son turned the key so we could test bottom cylinder, the top nut on...
  8. rookie456

    72 johnson 50 hp spark plug thread repair

    I did a compression check yesterday. Top cylinder 128#, bottom 130#. After reading posts about compression checks I decided to check again with engine warmed up. Couldnt get tester to thread in top cylinder so I checked bottom, bottom cylinder 140#. Then I notice the reason I cant thread...
  9. rookie456

    1972 johnson 50hp tach

    I would like to add a tach onto my 72 johnson 50 hp electric start. It seems that there are a lot of tachs to choose from and they range in price. Can someone tell me if I need a certain type of tach for my engine?
  10. rookie456

    72 johnson 50 hp power tilt parts prestolite

    i have a power tilt on my outboard. the model # on the pump is 105519, and the number stamped on the motor casing is etf 4003. it is a single cylinder lift, just for tilting the motor. I wanted to get some parts and at one time i remember seeing a schematic breakdown of the motor and pump, i...
  11. rookie456

    trailer axle bent, pics included

    I bought a used 17 foot blue fin with a continental trailer back in July. I pull the trailer with a Pontiac Montana. It trailers nice, doesn't wag. A few weeks ago I noticed the tread on the tire was worn on the inside of the tire, kind of in a saw tooth pattern. After investigating more, I...
  12. rookie456

    is my trailer too short for my boat

    I bought a 1985 17 foot bluefin. It came with a 1982 continental trailer, which makes me think it wasnt the original trailer for the boat. The hooks on the transom are about 3-4 inches rearward of the hooks for the trailer. Should the hooks line up so that the transom and the trailer line up...
  13. rookie456

    1972 50hp johnson is shift diode required

    I have a 72 johnson 50hp. 50ESL72 is the model number. I am trying to figure out the wiring, it is not wired correctly. it is missing the shift diode, and missing the safety switch. The motor runs in forward only. I know the shift switch in the remote is good, the shift solenoids are bad. my...
  14. rookie456

    72 johnson 50 hp shift solenoid ohms and continuity

    I have a 72 johnson 50hp. I am testing the shift solenoids. No results from using a jumper to run 12v to the blue or green wire while cranking engine over, prop still turns. I tested the solenoids with ohm meter, I thought I read it should read 5-6 ohms, should it stay at 5-6 ohms, or just...
  15. rookie456

    72 johnson 50hp shifting and wiring problems

    Took my first boat out last weekend, only to find out the boat will not shift into neutral or reverse. I read some of the past posts and started trouble shooting. The switch inside of the remote control works, 12 volts on green and blue wires. I then noticed that the green and blue wires...
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