1978 Johnson 4HP outboards Service Repair Manual P/N JM-7803, Page 57Get this manual

1978 Johnson 4HP outboards Service Repair Manual P/N JM-7803, Page 57

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CHECKING MOTOR TEMPERATURE The motor checked for overheating with the use of the Markal Thermomelt StikThis is heat sensitive stick, similar towhich melts contact with surface at specific temperatureT