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I've recently acquired an ES2 as a project to complete.
I have struggled to find a diagram to help me re-assemble the primary drive - which had been assembled using washers as spacers - leaving the inner primary case on the piss.
Andover Norton have some diagrams for much of the bike but not that section.
So does anyone have any diagrams that they can share?
Remove the offending washer
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Or add others to equalise the position. Don't know of any diagrams other than the spares book diagrams which shows the relevant components and seals. Requirements are that it fits clear of the sprockets/ chains and sits up against crankcase. The gearbox shaft comes through a felt washer trapped under a sliding disk that you position to accommodate the shaft and provide a "seal". Once your happy with the rear. Fit the front. Rubber seal to inner case on silicone type seal then heavy grease on the rubber to outer cover. Deep G clamp on rubber pads to press together then fit the nut.