Originally Posted by Rackarns
Swedish sailer here :-)
I bump this thread, cause it really seems like you guys know 2qm20īs.
I have a 2qm20H in my 36 ft sailingboat. I have the lever control with to arms (one for the gear and one for the throttle). This is killing me, I canīt really live with the way of handling the lever control. I am so near of killing the engine everytime I try to find a working idle when changing gear. And I donīt want any crash to happend beacuse of this.
I have asked a bunch of guys here in sweden
if it is possible to change the lever control to a single one. The 2qm20H seems to have a special wire to kille the engine not only that you pull the idle to zero this wire has to be pulled. That makes me wounder if itīs possible to change to a single lever control and connect the wire for killing the engine to some sort of knob.
Excuse me of bad english
Welcome aboard Linus.
You have raised two seperate issues and I deal with each one separately.
1. Engine stop cable. If your 2QM20H is standard, it should already have a seperate stop cable usually attached to a knob or small lever. Look at the bottom section of the attached picture where I have added some coloured pointers and a circle.
The green pointer shows the throttle cable (also called speed control) and it moves the regulator
handle on the engine accordingly. In the idle position, the regulator
handle seats against the idle adjuster (yellow circle and yellow pointer). The idle adjuster is used (obviously) to adjust idle speed and should be adjusted when the engine is in neutral. The return spring holds the regulator handle against the idle adjuster.
To stop the engine, the stop cable (red pointer) is pulled and this allows the whole idle adjuster body to move against another small spring (red circle) which in turn allows the regulator handle to move further (pulled by the return spring) which cuts the fuel off completely inside the injection pump
The small spring (red circle) may be rusted up and not allowing the mechanism to work
correctly or it may have badly adjusted or even removed by a previous owner.
However you should be able to make it work as described above.
2. Converting two lever (gear and throttle) to a combined single lever operation. This is more difficult to achieve because most single lever setups use two small
size control cables
whereas your exisiting gear lever cable is most likely a large diameter cable. Have a look and if your gear cable is much larger than your throttle cable, then you will have a problem trying to convert to a single lever. However if both cables
are the same size (small) then it will be easier to achieve.
The reason the gear cable is larger is because the force needed to operate the mechanical disc clutch
/ gear is quite high. The small cables usually aren't strong enough to operate a mechanic
on this engine. Newer engines have either a cone clutch or perhaps an hydraulic clutch where the force required is small.
Maybe there is a single lever that will accommodate one large gear cable and one small throttle cable but I haven't seen one in my part of the world.