Hello Lockstock
I do not have a parts list, but I can help with the terminology.
A primary chain is the first chain used from the engine.
A secondary chain must run in sequence from that.
In your first image I guess the belt is from the engine.
This would mean the sprocket [LH in your image] is the
first driven chain - the primary. It drives the secondary chain
[RH in your image] to the rear axle.
Hope that helps.
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Jack
