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  1. J

    Checking trim fluid level

    1987 johnson 175. Model j175tlcua. Wanted to check my trim fluid level. Book says to check level with rams fully extended. Then also says motor should be verticle. So way I read, makes me think opposite positions. So should rams be fully out to check level?looks like only way to even access...
  2. J

    Gear ratio

    Wondering gear ratio on a 1987 johnson 175. Model number J175tlcua?! Was curious what is was.
  3. J

    1987 lower unit driveshaft

    looking for a rebuilt lower unit. been on ebay and other places. mine is a 1987 Johnson 175. model is j175tlcua. I have seen a lot of lower units without upper driveshaft. says have to be transferred. is my driveshaft removable and able to be transferred? what years will fit mine? thanks!!!
  4. J

    1987 johnson 175 lower unit

    Got myself a 1987 johnson 175. Model is j175tl175cua. Believe that's model. Hard to read label. Anyways, been metal in lower unit. Pulled off and reverse gear. Forward gear missing teeth and starting to fail in a bad way. I don't have the special tools to set new gears properly. Any tricks to...
  5. J

    Anti freeze necessary for winterize?

    Got a 1987 johnson 175. Seasons over here in iowa. I have put motor straight up and down to drain water. Is it necessary to pump rv antifreeze in motor or waist of time and effort?! Thanks
  6. J

    Only max rpm 4,000

    Got a all weld 20 ft boat. Flat bottom. Has had a lot of aluminum added to front. She's def heavy. Have a 1987 johnson 175 hp. Model is j175tlcua. Have about 14 inch by 24 pitch prop on it. Motor runs great. I can't get much over 4200 rpms out of it with some gear in boat. Had about 50 gallons...
  7. J

    Engine case half sealer?

    Got a 1987 johnson 175hp. What do you guys recommend for sealing the case halfs with?
  8. J

    1987 johnson 175 cut my loss?!

    Got a johnson 175. Model number is j175tlcua. Rebuilt motor. Ran it and ran great. Was on water and smoked number 5 piston. Suspecting Lack of fuel. Cylinder turned out good after quick hone. Installed new piston. Suspecting water in fuel. Back together and only ran for 10 min in driveway...
  9. J

    Exhaust manifold gasket instructions?!

    Got a 1987 Johnson oem exhaust manifold gasket. It's the inner one. Model is j175tlcua. Got a oem one. Said instruction sheet necessary. Part number of gasket is 0393561. Want to know if more to instructions is just cutting gasket for the 2 orings?! Thanks.
  10. J

    Manuel primer bulb ok on a 175 hp?

    Read in Manuel that electric primer pump is necessary for larger motors like the 175 rather than primer bulb.. It's a 1987 johnson 175. Vro removed. I really don't wanna use electric pump. Is a nice quality primer bulb ok to run? Believe looked at silver star 5/16 and/ or 3/8 one.
  11. J

    1987 johnson 175 float height

    Know there's a special tool. Rebuilt carbs and all floats were around same height. So installed floats at same height and put drop at correct level. Anyone have a measurement process or spec? Thanks
  12. J

    Smoke piston after rebuild

    So I rebuilt this motor over winter. Rebuilt carbs also. Set base ignition timing. Set high speed timing. Was out on river running it. Prob got 10 hrs on rebuild running 25/1 mix fuel. Got into it about 3/4 throttle for about 2 minutes. Motor rattle some and stalled. Wouldn't crank. After...
  13. J

    Looking for a oem or aftermarket flywheel. Help please.

    Got a 1987 johnson 175. Model j175tlcua. Looking for a good flywheel or aftermarket. Oem seems gone. Aftermarket out there? I can't find. Maybe someone knows something I don't know. Had two magnets come unglued. Believed preignition cylinder 5 and smoked a piston. So looking for a reliable one...
  14. J

    Lower gear oil weight?

    1987 johnson 175hp. What weight and brand of gear oil recommend for lower unit?! Thanks
  15. J

    Think this prop is fitting?

    Got a 20 ft flat bottom boat. 8 ft wide. Commercial boat. Not sure on weight. 30 gallon fuel tank. Will have total of 90 gallon live wells. It's a weldbuilt boat. Has a 1987 johnson 175 hp on the back. Motor had no prop. Was told had a 14.5 by 24 15 spline on it before. Think this would be fine...
  16. J

    Rod to crankshaft clearance?

    1987 johnson 175. Anyone have ball park clearance with feeler guage from big end of rod to crank side?
  17. J

    Thumping noise when turning motor over by hand

    Rebuilding a 1987 johnson 175. Got all together but the intake. Waiting on reeds. All went smooth. Noticed when turning over by hand I get a thumping noise at certain points from the top 2 cylinders. Noticed if I put some upward pressure on the rod by crank, noise gone. Got rods aligned very...
  18. J

    Exhaust gasket 1987 crossflow 175

    Rebuilding 1987 johnson 175. Model number j175tlcua. Between block and exhaust manifold has two orings and then the gasket around them(gasket is cut so relying on orings ) The gasket set I got don't have orings and the gasket appears to go around the two oring holes as old was cut out around...
  19. J

    1987 johnson head gasket

    Rebuilding a 1987 johnson 175. Bored .040 over. The head gaskets I got seem like maybe could hang over little bit into cylinder. Surprise no dowels to keep gasket 100% square. Do I need to worry about or there oversized gaskets available?
  20. J

    1987 johnson 175 jetting

    Rebuilding a 1987 175. Bored .040 over. Rejetting carbs necessary? If so, any idea how much? Thanks.
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