1972 Johnson 2R72 2HP Outboard Motor Service Repair Manual P/N JM-7201, Page 23Get this manual

1972 Johnson 2R72 2HP Outboard Motor Service Repair Manual P/N JM-7201, Page 23

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engine at full throttleUsing tachometer, adjust high-speed best higll-speed setting is obtained
slow speed (700-750 low-speed kn until highest reading and smoothest performance obtainedAllow 15