Search results

  1. O

    1990 Mercury 2.4 175 - water diverters

    Does anyone have an image of the placement of the diverters in the cylinder water jackets - had one but can't find it
  2. O

    Help - just bought on a whim a 1980 (maybe) Mercury 175 hp - need help on release of the clam shell cowl and cant find a serial number to verify it

    The engine at least one side lol - I got one side of the cowl off - looks clean and maybe maintained - the tilt and trim is a single ram with the motor mounted outside the probably inside the transom - the motor is in an up position which I will have to deal with to put it on my stand to start...
  3. O

    1990 Mercury 175 Overheat warning possible causes?

    Put the boat back in the water after being out for nearly a year. Had to put in a new trim and tilt unit. Put the engine on muffs and started it up and was okay - but didn't see it peeing - but water was coming out of the prop - ran it for less than a minute. Next day I put her in the water...
  4. O

    1990 Mercury 175 front cowl release mechanism - spring reinstall

    finally getting my boat and motor back in the water - however, am having a difficult time reinstalling the front cowl release mechanism - can't figure out how to set up and install the spring ie where does the flange go to set up the tension for the release - has to go somehow to the part that...
  5. O

    Merc Trim and Tilt Bench Test

    Took me almost 3 months to knock out the tri lobe pin - finally got it out. Ordered a second hand Merc Trim and Tilt unit and wasn't able to even test it for 6 1/2 months. Finally got to do a test on it and it works but there is a problem. Just had it upright on the ground by the trailer and...
  6. O

    Mercury Spanner wrench for tilt and trim

    Ok bought this used tilt and trim replaced motor need to check pump one screw (always one) seized but think I get it out - maybe lol - think the orings in the ram trims need replacing tried a cheap spanner - cap no move - watched a video using the mercury Spanner a socket wrench and a 3 ft...
  7. O

    Mercury Tilt and Trim units

    Have a 1990 Mercury 175 with a design 1 trim and tilt unit - has been a battle due to release valve being seized and actually deteriorated ( probably original as in black plastic if anyone remembers) - motor was dead and replaced it and pump changing to a 2 wire vice 3 - got a new stainless...
  8. O

    1990 Black Max 175 PTT replacement odyssey

    Okay started with motor trimmed mid per trim gauge - pump verified as dead - release valve has proven useless - got a screw driver imbedded in the head but could not get it to budge - trying to get starboard transom bracket unstuck - everything I've seen on here and web talks about steering...
  9. O

    Jack Plate for a 1990 Mercury black max 175

    Okay since I have to pull the motor checked out jack plates. My shaft puts the cavitation plate at or just above bottom of transom with prop at 21 inches. It's mounted on a 1990 Ranger 375v and performance seems good. Looked at 4 in manual aluminum Jack plate but not sure how much benefit I...
  10. O

    1990 175 BLK Max on 1990 Ranger 375v - transom bracket lower bolts

    Help - replacing the PTT motor need to slide right transom bracket - alls done except lower transom bolt - do I have to pull the gas tank to get to it or is there another solution - hopefully. The bolt head on the outside turns.
  11. O

    1990 Mercury Black Max 175 2 stroke carb - trim pump is dead - need advice before proceeding

    Tilt and trim went out intermittently appeared to be electrical - then it quit on me while fishing luckily engine was in mid standard tilt position - powered back to my slip - tilt then worked fine. Next day tilt and trim worked fine on run out but when stopped to fish - no tilt - powered back...
  12. O

    Bad trim and tilt motor

    1990 Mercury 175 2 stroke carb - tilt and trim stopped operating sporadically - appeared electrical and checking adjusting fuse connections/also twice it stopped and then was fine at next attempt. Thought it was relays since was getting strong click on on activating at both remote throttle arm...
  13. O

    Trim gauge wiring

    I installed a trim gauge on my 1990 Ranger 375V - and it worked okay. However, at times I sensed a variation/slight fluctuation between my tach and adjusting the trim on my controller handle. I wired my console gauges all sharing the purple ignition power wire and ground from the wiring...
  14. O

    Timing on 1990 Merc Black Max Carb 2 strk 175 - hope Fast Bullet weighs in

    Engine was running before repair - exhibited symptoms of bad stator. Have replaced stator and trigger - engine started on first key turn but but at high rpm - shut down immediately - checked carbs butterflies closed - trying to set timing according to Maintence manual which says go to TDC 0...
  15. O

    2 Strk Carb 1990 Merc 175 - not starting when hot - warm - 30 min wait starts fine

    Motor starts fine when cold - runs great on way out - when I stop I idle her for a min or so then turn her off and on - fires immediately. Then after fishing for 1/2 hr to hr - I move she fires up and runs great stop idle for a min turn off and hit key fires up immediately - fish for 10 to 15...
  16. O

    1990 Mercury 175 outer switch box with unidentfiable wire

    My outer switch box has a wire coming in from the right hand side attaching to the 3rd from the bottom pin with a green and white wire from the left. I have found no mercury wiring diagram with any wire except the single green and white connected. Picture of switch box attached - any ideas or...
Top