1972 Johnson 4HP Outboard Motor Service Repair Manual P/N JM-7202, Page 37Get this manual

1972 Johnson 4HP Outboard Motor Service Repair Manual P/N JM-7202, Page 37

Quality of the image is intentionally reduced!

Since the pistons, with the piston rings, receive the force of combustion in the cylinder head, it is necessary that both the pistons and piston rings be properly fitted to form seal between the pisto

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