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Anyone more than familiar with the Edson single lever engine controls, as in know them inside out?
Posts by PaulinVictoria
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It's in my "runaway diesel" thread, I am now 100% sure the issue is down to the control itself, and if you don't have a diesel you might not have looked in there.
Symptoms:
- Run the engine in gear at cruising/high throttle, it'll be fine for a while.
- There is then a banging from the transmission, as if the cone in the gearbox is being slightly disengaged
- If you throttle back, it might slow the engine, you can go into neutral, back into gear and all is fine again (until next time)
- Alternatively, you can throttle back, nothing happens and if you happen to knock it out of gear, you then have an engine racing with no load at full throttle despite the lever being in the idle position.
- If you bang it back into gear (tried it today as a last resort) and waggle the lever around a bit, full throttle, idle, full throttle etc then you might get control back
Yes I have had the cover off, no it not all grunged up in there, yes I gave it all a squirt of oil, no the cables are not pinched, crooked, turning too tight, resting on anything etc.
The only thing I could see was a screw (which I think is for friction adjustment) had been tightened too much in the past and was actually burring the corners off the gear. I adjust, de-burred etc.
Am I looking at some sort of adjustment needed in the control itself? I cannot get my head around why if it was the adjustment at the transmission end, that would also affect the throttle. I can understand it trying to jump out of gear, but why would that then affect the throttle not shutting off unless there is something stuck/catching etc in the control itself.
I can't find any sort of parts diagram, or a clue as to how the thing goes together.
So, I wonder if anyone is an expert on these controls
Symptoms:
- Run the engine in gear at cruising/high throttle, it'll be fine for a while.
- There is then a banging from the transmission, as if the cone in the gearbox is being slightly disengaged
- If you throttle back, it might slow the engine, you can go into neutral, back into gear and all is fine again (until next time)
- Alternatively, you can throttle back, nothing happens and if you happen to knock it out of gear, you then have an engine racing with no load at full throttle despite the lever being in the idle position.
- If you bang it back into gear (tried it today as a last resort) and waggle the lever around a bit, full throttle, idle, full throttle etc then you might get control back
Yes I have had the cover off, no it not all grunged up in there, yes I gave it all a squirt of oil, no the cables are not pinched, crooked, turning too tight, resting on anything etc.
The only thing I could see was a screw (which I think is for friction adjustment) had been tightened too much in the past and was actually burring the corners off the gear. I adjust, de-burred etc.
Am I looking at some sort of adjustment needed in the control itself? I cannot get my head around why if it was the adjustment at the transmission end, that would also affect the throttle. I can understand it trying to jump out of gear, but why would that then affect the throttle not shutting off unless there is something stuck/catching etc in the control itself.
I can't find any sort of parts diagram, or a clue as to how the thing goes together.
So, I wonder if anyone is an expert on these controls
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My controls are in a separate box, like this, so there are no chains to catch.
I may have to try getting in touch with Edson as well, having zero confidence in the engine/gearbox on the boat is not a good thing. Actually, I am quite confident in the engine and gearbox, after the abuse they have had with the control problem they are still fine, but you know what I mean.
I may have to try getting in touch with Edson as well, having zero confidence in the engine/gearbox on the boat is not a good thing. Actually, I am quite confident in the engine and gearbox, after the abuse they have had with the control problem they are still fine, but you know what I mean.
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Gears engage fully in both forward and reverse, and throttle gives me full range of motion too. The shift lever at the transmission end has a kind of spring block attached, it is supposed to hold it fully in gear. I can try adjusting that to add a bit more spring tension.
What's still confusing me is why if the gear is partially disengaging does it also affect the throttle? I get that it is going to rev higher with less or no load, but why does throttle stop responding? If it was just jumping out of gear that would be one thing, but jumping out of gear and jamming the throttle wide open is another.
What's still confusing me is why if the gear is partially disengaging does it also affect the throttle? I get that it is going to rev higher with less or no load, but why does throttle stop responding? If it was just jumping out of gear that would be one thing, but jumping out of gear and jamming the throttle wide open is another.
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I already confirmed that the lever is operating things as it should at the engine end, the full throw of the lever on the transmission is used, as is the full travel of the throttle arm on the engine.
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