Search results

  1. S

    Compression

    Hi Forum, I own a 90hp 3 cylinder 1988 Mercury outboard, the serial number is: 0B302485. I did a compression check on the 3 cylinders and got 89psi on top, 90psi on middle and 89psi on the bottom cylinder. Dont think my gauge is the top of the line so can someone give me some insight as to...
  2. S

    1988 Mercury 90hp Switchbox voltage readings

    Dear Forum, Im hoping some of you can give me your interpretations of these switchbox readings. These I took with a DVA meter I recently purchased. I set the meter on the 400 Volt setting for the DVA and this is what I got with the motor running at around 1000rpm on my onboard tachometer. All...
  3. S

    Switchbox Voltage readings

    Dear Forum, I just bought a DVA meter, I have a 1988 Mercury 90hp, 3 cylinder outboard serial number 0B302485. My question is the trigger has a brown, purple and white wire hooked to the switchbox, I assume this ties into the 3 coils that are on my outboard. I have 4 posts on the bottom of...
  4. S

    Testing Switchbox

    Dear Favorite Forum, I have a question which I am sure someone will say it has been answered before, but here it goes, and I bet someone will direct me to CDI's troubleshooting website which I have been to many times, IM JUST SLOW I GUESS, in learning and sensibility that is! Anyways here it...
  5. S

    Direct Voltage Adapter

    Dear Forum, I found on here where someone posted how to make a DVA Adapter, but I am unsure of the best size of the Capacitor, the diode and the resistor to use. I have a 1988 Mercury 90hp 3 cylinder outboard and want to make sure when I head to Radio Shack I purchase the correct materials to...
  6. S

    Still NO spark

    Dear Forum, I initially checked my stator on my 1988 90hp Mercury outboard because I had NO spark. The stator checked bad between the red and blue wire on the switch box. However each wire checked OK to ground. The two yellow wires for the charging/rectifier checked OK also. I replaced the...
  7. S

    Rectifier test

    Dear Forum, I read on CDI's website that to check my rectifier for my 9 amp charging system I disconnect the two yellow wires from the stator and see if I have spark then??? My problem is I have lost spark to all three cylinders as I noted in a previous post. I checked the red and blue wire...
  8. S

    Flywheel and Stator removal

    Can someone give me directions on pulling the flywheel on a 1988 90hp Mercury outboard, serial number 0B302485? I dont want to go out and spend a ton of money on tools after I will drop $200 on a new stator. Will it be necessary for me to buy the puller etc....? I just want to get a feel for...
  9. S

    No spark!

    Dear Forum, Every once in a while I have to go through this ritual to start my 90hp Mercury outboard, 3 cyl. The serial number is: 0B302485. The engine turns over beautifully but has no spark to any of the cylinders. For whatever reason, at times it has spark and will start and run fine all...
  10. S

    Tachometer

    Dear Forum, My 1988 90hp Mercury outboard, 0B302485 serial number has a tach problem. I have the simple 9amp charging system which only consists of the ac off of the stator feeding a rectifier, no voltage regulator, and one grey sender wire going up to the tachometer. I removed the rectifier...
  11. S

    Neutral Start switch

    Dear Forum, Can someone tell me how to jumper past this switch or how to do a thorough check on this switch? If this switch is defective will the motor even turn over when in the neutral position on the remote control? Also, will this switch allow the coils to not fire if bad? I am unsure of...
  12. S

    Boat Tachometer

    Hi Forum, I own a 1988 Mercury 90hp outboard, 0B302485 serial number. It has a 9amp charging system thus just the rectifier block for charging. Yesterday my tach stopped working. Can someone give me a detailed troubleshooting to figure out where to begin troubleshooting this issue? I do...
  13. S

    Motor turns over, but wont start

    Dear forum, I own a 1988 mercury 90hp 3 cylinder outboard. The other day I went out to start my motor with the ears attached for a water supply. The motor would turn over great, but would not start, sounded like no spark. I put a spark tester on each cylinder and had no spark, but then I...
  14. S

    1988 Mercury 90hp

    Dear Forum, I own a 1988 Mercury 90hp 3cylinder outboard, serial number 0B302485. I have a simple rectifier to charge my battery, no voltage regulator. Would it be possible to replace the rectifier block with a voltage regulator instead and if so which voltage regulator do I purchase...
  15. S

    1988 Tracker Windshield

    Dear Forum, I need some advice. I own a 1988 Bass Tracker Magna 17 ski/fish boat. It has a 90hp Mercury on it. My question is the windshields, 3 piece with center walk through, are in bad shape, it has lexan in the frames and the lexan is all cracked and looks terrible. The side pieces are...
  16. S

    Fuel line kit with primer bulb

    Dear Forum, Can someone tell me where I can purchase a fuel line kit with the primer bulb and engine plug in for my 1988 Mercury Outboard 90hp. The fuel tank is built in on my boat so I only need the end that plugs into the engine on the new hose line kit. I think mine is 3/8" fuel line. My...
  17. S

    1988 Mercury 90 horsepower water pump replacement

    Dear Forum, Can someone give me specific directions for replacing my water pump and related gaskets and seals on my 1988 Merc. 90hp motor? The serial number is: OB302485 if this helps. I am not sure if I should have the motor in forward or reverse or neutral when removing the lower unit...
  18. S

    Clinton K505 Outboard

    Dear Forum, If anyone has a service/repair manual for a Clinton K505 5.5hp outboard motor please contact me at rfschmid@wi.rr.com. Im looking for this manual as I just came across this motor. Want to use it on a square back canoe. Thank you guys and gals, Rick S.
  19. S

    Evinrude 40 hp

    Dear Forum, My cousin has an Evinrude 40hp outboard motor. Its around a 1998 and it has an oil tank mounted seperate on the floor of the boat and from there it feeds up to the motor. The warning beeper kept sounding a series of beeps indicating that the oil was low, I think thats what it...
  20. S

    1984 Mercury 50hp Outboard

    Dear Everyone, Can someone please tell me what Remote Control is on my 1984 Smokercraft boat. I have a 50hp Mercury 4cylinder outboard, serial number 6539992. I had a small plastic piece break inside the remote control that would not allow me to shift into reverse. Your help with this would...
Top