I've been feeling a little guilty at not having touched my Lister D since fetching it from the wilds of Macclesfield, but at long last I've made a start.
I was aware that something in the throttle / governor area was seized solid, so I'd taken to spraying the relevant bits with WD40 every time I passed it. Tonight I finally grasped the nettle. I got out my long-neglected non-metric spanners and started at the bottom of the assemblage, by the governor.
The big-nut-with-the-big-threaded-bit-with-a-screwdriver-slot-in-it came undone very easily, enabling the bottom section of the linkage to swing free. On undoing the front of the governor, it struck me quite forcibly how "chunky" the old threads are - I'd forgotten, having seen only metric and BA threads for the last 20-odd years. All was well in here, so it was all reassembled and I headed up to the carb. The butterfly was seized..............
Having (very carefully) detached the fuel pipe from the filter to the bottom of the carb, the float chamber was detached, then the rest of the carb. There was no gasket on the inlet hole.......... The butterfly responded to more WD40 and whilst I was at it, the float chamber got cleaned up. Here, I discovered something I didn't know before. I cleaned up the float chamber using a brass wire brush - the sort that goes into the same sort of holder as a glass fibre brush.These are much used by railway modellers and proved ideal for this job. However, I was surprised that under all the gunge, the chamber was actually painted with aluminium paint. The colour of the faded paint was distinctly different to polished aluminium.
I managed to get the top off the float chamber - all appears to be OK inside - before reassembling everything, except for the throttle return spring, which fell in two! Anybody know where I can get one from?
Brian L Dominic
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