Tech note; In general engineering design it's allways best to try and position any drive procket or gear as close as possible to a supporting bearing (eg; clutch sprocket near to crankcase bearing on GX160). The further away from the bearing the more bending moment forces can occur resulting in all sorts of nasty high frequency vibrations to the crankshaft at high RPM. Obviously,as mentioned previously,clutch installation may have to take prevalence because of space restrictions. This principle also applies to the rear axle and its components.However we have to remember that we are not dealing with a McClaren F1 engine doing 18k RPM! but every little helps in calming down those 'teeth rattling' GX160 vibes.
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