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I also have an 89 100hp merc. with a bad t/t motor. I found out today that the motor is no longer made and you have to buy a retro fit kit for the low low price of $546. I think i found a used one in New Orleans. Right now I can not get the old one off. I cannot get to the back allen head bolt out. I'll figure it out! Thanks. [links]
Re: 1989 100 hp Mariner Tilt Trim pump replacement
Re: 1989 100 hp Mariner Tilt Trim pump replacement [links]
I don't know how much this will help, but here goes. I tried till I was blue in the face to get my entire assembly out from between the ob motor brackets. I finally got it out and was able to get another assembly. Getting the new (to me) assembly into place was another bear all together. I finally removed the bolts holding the OB motor bracket to the transom. I loosened the Port side nut on the steering tube,almost off. I used a wedge to work the bracket over to the port side, this created enough space to get the tilt/trim assembly out. I don't know if this helps, but I do know that your chances are a heck of alot better in getting a replacemnt assembly if you have the old one in your hand.
Here's what I know. On the OB Mariner you have to remove the motor from the transom to do properly. Plan on about 5-6 hrs labor [links]
Re: 1989 100 hp Mariner Tilt Trim pump replacement more
gerald ford (Sunday, 07 March 2021 21:27) here
I down loaded your mariner 115 service manual but I didn't get the part 115 hp 4 cylinder engines powerhead part 4 b for 115 hp motor. do you have that one. I have a 4 cylinder and need those papers. thanks my email address is auntielor50@aol.com here
Need manual for Mariner 8M, #677S 044319
looking for a marina 9.9 4 stroke manual.engine number,0h0015 more
Garret Faverty (Friday, 21 May 2021 18:56) more
Hey CharlieB
Just letting you know your thread is still solving problems. Thanks for your reply to the thread here as it has also helped me. Now I just have to fix my outboard.
If the rapid beeping continues/begins immediately as the key is turned ON but the motor not started, it could be an adhesive failure, the magnet on the bottom of the oil tank float falls off, triggering the constant beeping oil alarm. If this is the case, unplug the two blue wires under the oil tank to see if the alarm quits. If so, order a new oil tank.
If this is not the case and it is the oil alarm, add oil to the fuel to a 50 to 1 mix to protect the motor until this is figured out and repaired. more
Thanks all, turns out it was the oil tank, the 3 inch sensor mounted in the bottom of the oil tank was loose, meaning i could pull it down and push it up, the oil tank was about 3/4 full , when i pulled it down and pushed it back up the alarm stopped and started ( stopped when i pulled it down). I pulled it all the way out with oil in the tank and it has a rubber cover on it that had a cut in it, i took a razor blade and cut the rubber away to see what was inside and it was a glass tube with a wire in it and the glass tube was broke, i ordered a new tank and sensor(sold seperately) and ordered a new oil control module as well. I replaced the water pump and thats working great. Only thing i didnt like about the repair manual was that it didnt explain how to replace the bottom of motor with the drive shaft(the short spined shaft) in neutral instead of in gear, turns out just turn it until the prop spins free in both directions. Do i need to do anything speacial after removing old tank and replaing it with the new ( bleed the oil line, etc) ? I decided to replace both the tank, it's sensor and the oil module and then after running it remove the oil hose from the outlet of the oil pump to verify it's pumping, and the see what beeps i get when all is working correctly, does anyone know the series of beeps that should sound?
do you have a water pressure gauge and does the alarm only sound at slower speeds and goes off at a faster pace. I had this proplem and it was low water pressue (bad water pump) [links]
Re: beeping alarm inside throttle box, overheat alarm? 1989 Mariner 115 HP here