The instructions are very clear (I think our own Ian Savage added a few pointers during its compilation) it is all very straight forward. I, however have just had to pull mine apart again. It is totally my fault but worth noting. I have a crankshaft seal (just in case you thought that would not be compatible its not a problem) but I did not seal around the crankcase to inner chaincase joint or the central boss well enough and I had developed an annoying leak which I initially thought was the normal outer chain-case joint. Other than that no problems. Bearing in mind I am very naughty as I have used a brand new 14Ah battery I already had rather than the higher-rated recommendation.
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