1976 Johnson 2HP 2R76 Outboard Motor Service Repair Manual, P/N JM-7602, Page 39Get this manual
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ring landsSee Figure 5-13 Check piston for size and rOW1dness, using ll1icrometerCorrect sizes given in Section 2 Before installing l1ew pistOI1 rings, check gap between ends of ring placing ring in c