Some time ago I bought this mower on the popular auction site and as so often happens it proved to be in worse condition than I had hoped. In fairness I don’t think the vendor realised the extent of this and indeed I did not pay a large sum for it.
It has a Villiers Mk VI C engine with an H prefix, which I think, dates it to 1923 and therefore is an early model. Even more reason to try to recover it. It has clearly been left very exposed out in the open for many years so that just about all the parts have rusted solid, including the engine. Some of the parts have rusted and deteriorated way past my skills of renovation but we’ll not worry about these at the moment.
After many weeks of working on the engine I have at last got it free enough to revolve.
Now for a few of what I think will be many questions. I have made some attempt to find answers by searching the forum but haven’t found exactly what I am looking for, however if answers already exist please do direct me to them.
1. As you can see from the picture the spark plug lead has disintegrated and I need to replace this. On the rear of the magneto back plate and passing in front of the spark plug lead connection there is a curved piece of wire which is attached to the backplate by a screw at each end. What is this?
2. On the other side of the backplate is what appears to be another connection to the magneto, see the picture below. What is this? The only things I can think of are a connection for lights but this seems pretty unlikely for a lawnmower! or some form of ignition cut-out.
3. The original Atco carburettor was still attached, see the picture below, but unfortunately is missing its float needle and float clip; the float itself is dented but useable I think. I’ve read somewhere on this forum (but now can’t find it) that unlike the clips on most Amal floats the clip on these is a separate part sitting on top of the float and upside down to the way they are fitted to Amal floats. Interestingly, inside the float chamber was the small brass ring, is this some part of the carb? What I’d especially like of course is another float needle but maybe one can be made. In order to get one made I need to know the diameter of the straight section (at the bottom of which is a cone shaped section which sits through the bottom of the float chamber to control the flow of fuel). Also the overall length of the needle (including cone section) and the distance of the groove (for the clip) below the top of the needle. The needle it seems protrudes through the top of the float chamber and is used to ‘tickle’ the carb. Incidentally, as a completely unrelated and nonsense question, why, when we tickle the carb do we keep pressing and releasing the tickler rather than simply holding it down until the carburettor floods?
4. The disc clutch plates are completely seized on the countershaft and I’ve not been able to find a drawing or picture of how the various parts are assembled. I’ve removed the outer collar by drilling through the retaining pin but I still can’t get anything to move, I guess I simply have to persevere with penetrating fluid etc or is there something I’ve not realised? Presumably the outer disc (the fixed disc) should now simply slide off the shaft? Also presumably the inner (sliding) disc should slide along the countershaft on a Woodruff key? I’ve poured diesel oil onto the friction plate (yes, I know it’s oil) but have been reluctant to try to drive a wedge between the two discs in order to help free them. Can someone tell me please which metal disc is the friction disc attached to?
Many thanks very much to anyone who can provide any help.