1975-76 Merc Outboard 115Hp Inline six,

[charakel]

1975-76 Merc Outboard 115Hp Inline six, Trouble with reverse

Hey Guys, It has been quiet the learning curve with a new old motor this year... Tying to get it in the water soon!! I got new control cables installed, and brought it to the river for testing. Forward gear if fine but when I put it into reverse, it does not go. it clunks like it goes into reverse but when I give it more throttle it just revs and if I give it more throttle it lifts the motor up in the water ore it dies off. Is the any more adjustments needed? When I installed the cable I moved the motor gear selector by hand to natural... Maybe not far enough towards reverse??

 

[charakel]

1975-76 Merc Outboard 115Hp Inline six, Throttling issuse

New old Merc full of Quirks! 1975-76 Merc Outboard 115Hp Inline six, runs great when you punch it at the start in the water but when going and on plane it cuts out, doesn't die but it cuts out like a miss-fire? Ant suggestions on what I can check. I gave it some sea foam, May be gas from last year in tank.

 

[charakel]

Last issue post I hope?? 1975-76 Merc Outboard 115Hp Inline six, What does it mean when the tele tail "pee Hole" water is cold or cooler. When I first got the motor started after acquiring it the pee water ran hot, now it is running cold, steady stream. Is it odd or normal?

 

[GA_Boater]

Hey Guys, It has been quiet the learning curve with a new old motor this year... Tying to get it in the water soon!! I got new control cables installed, and brought it to the river for testing. Forward gear if fine but when I put it into reverse, it does not go. it clunks like it goes into reverse but when I give it more throttle it just revs and if I give it more throttle it lifts the motor up in the water ore it dies off. Is the any more adjustments needed? When I installed the cable I moved the motor gear selector by hand to natural... Maybe not far enough towards reverse??

New old Merc full of Quirks! 1975-76 Merc Outboard 115Hp Inline six, runs great when you punch it at the start in the water but when going and on plane it cuts out, doesn't die but it cuts out like a miss-fire? Ant suggestions on what I can check. I gave it some sea foam, May be gas from last year in tank.

Last issue post I hope?? 1975-76 Merc Outboard 115Hp Inline six, What does it mean when the tele tail "pee Hole" water is cold or cooler. When I first got the motor started after acquiring it the pee water ran hot, now it is running cold, steady stream. Is it odd or normal?

Merged your three threads. You will find that the three issues are related, although you may not think this is the case.

Before offering any advice, more questions for you.

Other than changing cables, what else have you done? Carbs, impeller, lower unit lube check/change? Is the tell-tell temp being checked in the water or on muffs?

 

[charakel]

So Far I have just changed the cables and a Sea Foam treatment for a half hour. The Tell - Tell temp is running on muffs.

 

[jimmbo]

"Originally posted by charakel View Post Hey Guys, It has been quiet the learning curve with a new old motor this year... Tying to get it in the water soon!! I got new control cables installed, and brought it to the river for testing. Forward gear if fine but when I put it into reverse, it does not go. it clunks like it goes into reverse but when I give it more throttle it just revs and if I give it more throttle it lifts the motor up in the water ore it dies off. Is the any more adjustments needed? When I installed the cable I moved the motor gear selector by hand to natural... Maybe not far enough towards reverse??"

If the cable is properly adjusted, you might just be experiencing exhaust gas getting in to the prop. However the engine tilting in reverse means the reverse lock is not working, if it is a manual tilt engine, or the hydraulics are not working correct if engine has power trim.


"Originally posted by charakel View Post
New old Merc full of Quirks! 1975-76 Merc Outboard 115Hp Inline six, runs great when you punch it at the start in the water but when going and on plane it cuts out, doesn't die but it cuts out like a miss-fire? Ant suggestions on what I can check. I gave it some sea foam, May be gas from last year in tank."

Could be blockage or air leak somewhere in the fuel system. Have you ruled out ignition problems?





"Originally posted by charakel View Post
Last issue post I hope?? 1975-76 Merc Outboard 115Hp Inline six, What does it mean when the tele tail "pee Hole" water is cold or cooler. When I first got the motor started after acquiring it the pee water ran hot, now it is running cold, steady stream. Is it odd or normal?"

Well it could mean the water your boating in is very cold, or the engine is not under much load an has little heat to shed. If some cylinders are not firing the engine will not warm up either. There is no thermostat in that engine so it will take some time to warm up. The Tel-tale gets its feed from either the top of the block, or part way up the water jacket cover, so it is getting water from inside the block

 

[charakel]

Thanks Jimmbo for the insight. I am replacing a trim line tomorrow. I was wondering where the leaking oil was coming from and I had a cut in the line on the big fitting for the trim. Will post more once I can get the trim up, down to work, and bring it to the river again to test.

 

[Faztbullet]

Cool water is normal at idle on hose.....

 

[charakel]

"Originally posted by charakel View Post Hey Guys, It has been quiet the learning curve with a new old motor this year... Tying to get it in the water soon!! I got new control cables installed, and brought it to the river for testing. Forward gear if fine but when I put it into reverse, it does not go. it clunks like it goes into reverse but when I give it more throttle it just revs and if I give it more throttle it lifts the motor up in the water ore it dies off. Is the any more adjustments needed? When I installed the cable I moved the motor gear selector by hand to natural... Maybe not far enough towards reverse??"



Alright... Adjusting cable for reverse... Mind you motor is not started or running when trying to adjust cable for reverse. Every time I find the sweet spot in neutral on the motor close to reverse spot and install cable I am unable to shift freely from R to N to F. The control arm either gets stuck in R or in F gear. I am working with brand new cables. Help

I am trying to move the N gear on motor by hand as close to reverse as possible before engaging, then installing cable.. Is this not correct? Should there be a little wiggle room from N to R

Thank you for everyone's help and suggestions. I hope to be using the boat this weekend.

 

[jimmbo]

Disconnect the throttle cable, if it then shifts fine, the throttle preload is not correct

 

[charakel]

Disconnect the throttle cable, if it then shifts fine, the throttle preload is not correct

When I am doin this I do have the throttle cable disconnected.

 

[charakel]

Can someone tell me if this is correct? Maybe I am doing the cable install totally wrong. When I find the sweet spot on motor between N and R, install cable, install throttle and start the motor with muffs and see if I can put it in F-N-R??

So far When I do this I only have the motor off, and I am not spinning the prop as I try the shifter to see if it goes into gears all of the way. What I am finding from others is that when you have all cables installed, you need to run the motor to see if you have the remote control synced up with the motor gears????

 

[charakel]

No luck in the water! I was able to shift in F gear and in N but in R it only rev's up the motor and will not go to N. Its almost like the control shifter is hitting something cause I can't budge it! When I look at the cable on the motor there is more room to go in either direction back into reverse and in forward gear. Again I am working with new cables. Its gotta be an adjustment out of wack?

 

[jimmbo]

Will it shift properly if the shift cable is not anchored by the brass barrel nut? If so you might have a control box problem

 

[Chris1956]

Neutral gear will be approximately in the center of the shift slide travel. Anyplace else and the upper shift rod is misaligned.

Make sure the gearcase "clicks" into neutral and stays there, while you adjust the cable barrell nut. MerControl should be set in neutral, cold start lever down. Adjust barrel nut to center the shift slide in neutral detent.

Shift cable is first to move, when throttle handle is pushed forward or back. Make sure you are using correct cable.

Now use the throttle cable to push the throttle closed, MerControl in neutral, and adjust the barrell nut to add some preload.

 

[charakel]

Thanks for all of your input Jimmbo and Chris 1956. I ordered a new Face cam and Shift lever for the control. Seems to shift a lot better and does not get stuck!! I believe I found the correct adjustment, took it to the river and now I am dealing with a flooded motor. Now we sit until tomorrow.. I squeezed the prime bulb till hard, lifted the cold start lever and choked it. No fire.. So I think I flooded it, though when you say preload the throttle what do you mean?? I may have not done that step.

 

[Chris1956]

Gee, those motors are hard to flood. I would check your spark to make sure you still have some.

Adjust the throttle cable to push the throttle closed. Then turn the barrel nut to put a bit of extra pressure to close the throttle. That is preload.

 

[charakel]

I got it started and running on the landing.. controller not mounted, shifted fine. Take it home, mount the control and the damn thing locks in reverse and can't move the control to N or F gear. This is starting to **** me off.. Any advice?? I guess pull the control once again and take it apart.

 

[charakel]

Yup just as suspected, the Mercury CONTROL BOX LEVER in the control the little notch end is broke.