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Drive sprocket rubbing and DSS coils

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JezzaPeach:
Hi all, very grateful for any thoughts:

I'm replacing the 3 seals in the drive casing area, and noticed the chain is rubbing on the clutch push rod seal and it's surrounding alloy.
The drive sprocket slides a bit on it's shaft, and the 'play' is 1mm.
I have measured carefully and a steel washer/shim 1mm thick and internal diameter 25mm and about 30mm external diameter should stop or reduce the rubbing. The washer will not be subject to anything spinning on it as it remains relatively fixed on the shaft.
Should the sprocket slide in and out like this and should I just leave it? I suspect this is a common problem?

Also while I'm on, I bought a pair of coils on Ebay whose mountings are too close together so I'm returning them.
Has anyone used DSS coils, do the mounting holes match the original, and is the fitting of the 'substitute' wires fairly obvious as the differ to the original?
I will of course ask DSS the same question when I order.

As always, grateful for any comments from past experiences.
Best wishes.

Nurse Julie:
Have you got a standard drive chain fitted or an X ring or O ring chain?

Johnwebley:


  I bought a few DSS coils,

  but I think Boyer ignition burned them out,

 so I bought a pair of Boyer coils,fitted perfectly ,and no trouble

JezzaPeach:
Thanks both.
Julie, I just measured the chain and it looks pretty wide at 25mm. The link plates have a gap between which I guess may be the seals or washers.
It looks fatter than my chain back in the day, which I used to put in a wax/oil bath on the cooker. I'm only doing very low mileage.
If the standard chain (DSS one looks better and is only £19) is narrower, I guess the sideways play of the sprocket could be viewed as normal and/or would not matter. In general parts don't look unduly worn.

Nurse Julie:

--- Quote from: jeremypeachey on February 09, 2020, 03:56:41 PM ---Thanks both.
Julie, I just measured the chain and it looks pretty wide at 25mm. The link plates have a gap between which I guess may be the seals or washers.
It looks fatter than my chain back in the day, which I used to put in a wax/oil bath on the cooker. I'm only doing very low mileage.
If the standard chain (DSS one looks better and is only £19) is narrower, I guess the sideways play of the sprocket could be viewed as normal and/or would not matter. In general parts don't look unduly worn.

--- End quote ---
yes, 25mm sounds too wide, you must have one of these modern day fandangled x ring / O ring chains fitted. There is only just enough room for a standard width chain to run without fouling.

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