1976 Johnson 4HP 4R76, 4W76 Outboards Service Repair Manual P/N JM-7603, Page 30Get this manual
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CLEANING, INSPECTION, AND REPAIR ARMATURE PLATE 1nspect busl1ing (Fi gure 4-7) for evidence of wea rIf worn, slight will appear upper ei1d of bushig Excessive wear affects breaker it adjustmel1tReplac