I am looking for a bit of info for a 76 Johnson 115 outboard. I have posted about this before, but that was a while back and slightly different questions. At that point it was not running, but now it does run. My questions are as follows.
1. What battery do I need for this engine and is my starter bad? I hear around 500-600 CCA, but when I try to start the engine it needs way more than that. My truck has a 700 or 730CCA battery, and it took it running at 2200 RPM to crank the engine with 2 plugs in (was checking spark at the time). With 4 plugs it takes a running diesel truck (2 730CCA batteries) to crank and fire. Maybe it is my jumper cables at 20ft (4AWG), but that still seems a bit much for a 115. I hook up strait to the starter, so I don't know how that would be different from running a 1500CCA battery.
2. What is the charging capability of the engine? From what I understand it is 6A as there is not proper alternator, but I just want confirmation. I would like to run a small stereo on the boat, but I don't know if that is possible with such little amperage to charge the battery and run radio. I am not an expert in this field, but it looks to me like you can run speakers strait off of a head unit without an amp. If that's the case, could I do that, or would that overwhelm the limited power?
3. If my starter is bad and I lack power, could I switch to a starter generator, or would it be better to try and replace the starter and add an alternator? I do not know much about this, if I hadn't made that clear by this point
4. Is there a wiring diagram for this engine? I would like to know where all the wires tie back without having to tear it all apart and/or guess as to what they do. I think I figured out the key pinout, but I am not entirely sure.
5. Is there a way to test the temperature sensors, and a replacement horn for the control center?
6. This is getting a bit less electric related, but still questions I need answered. Is there a specific throttle cable I need for this engine, or is a generic Johnson/Evinrude/OMC throttle cable good enough? The plastic bits that connect on the engine broke on my cables. That's near 50Y/O plastic for you.
7. There is a linkage that attaches to the throttle on the engine, and goes up under the flywheel. Is this a timing advance, or something else?
8. While trying to run this engine, I was having trouble getting water up into the water pump using muffs. Maybe it was a lack of water as I did not turn the hose all the way on to try and save water, or a lack of pressure as the muffs are not sealing really great. I was going to run it in a large bucket of water so it is filled to the point of the pump and a bit more, but I just wanted to know if this engine need a lot of water to push through the pump and if I am on the right track.
I really appreciate any information, even if it only answers 1 question. Thank you
1. What battery do I need for this engine and is my starter bad? I hear around 500-600 CCA, but when I try to start the engine it needs way more than that. My truck has a 700 or 730CCA battery, and it took it running at 2200 RPM to crank the engine with 2 plugs in (was checking spark at the time). With 4 plugs it takes a running diesel truck (2 730CCA batteries) to crank and fire. Maybe it is my jumper cables at 20ft (4AWG), but that still seems a bit much for a 115. I hook up strait to the starter, so I don't know how that would be different from running a 1500CCA battery.
2. What is the charging capability of the engine? From what I understand it is 6A as there is not proper alternator, but I just want confirmation. I would like to run a small stereo on the boat, but I don't know if that is possible with such little amperage to charge the battery and run radio. I am not an expert in this field, but it looks to me like you can run speakers strait off of a head unit without an amp. If that's the case, could I do that, or would that overwhelm the limited power?
3. If my starter is bad and I lack power, could I switch to a starter generator, or would it be better to try and replace the starter and add an alternator? I do not know much about this, if I hadn't made that clear by this point
4. Is there a wiring diagram for this engine? I would like to know where all the wires tie back without having to tear it all apart and/or guess as to what they do. I think I figured out the key pinout, but I am not entirely sure.
5. Is there a way to test the temperature sensors, and a replacement horn for the control center?
6. This is getting a bit less electric related, but still questions I need answered. Is there a specific throttle cable I need for this engine, or is a generic Johnson/Evinrude/OMC throttle cable good enough? The plastic bits that connect on the engine broke on my cables. That's near 50Y/O plastic for you.
7. There is a linkage that attaches to the throttle on the engine, and goes up under the flywheel. Is this a timing advance, or something else?
8. While trying to run this engine, I was having trouble getting water up into the water pump using muffs. Maybe it was a lack of water as I did not turn the hose all the way on to try and save water, or a lack of pressure as the muffs are not sealing really great. I was going to run it in a large bucket of water so it is filled to the point of the pump and a bit more, but I just wanted to know if this engine need a lot of water to push through the pump and if I am on the right track.
I really appreciate any information, even if it only answers 1 question. Thank you