1978 Johnson 4HP outboards Service Manual, Page 53Get this manual
SECTION POWERHEAD
T ABLE OF CONTENTS
PAGE DESCRIPTION THEORY OF OPERATION TROUBLE ISOLATION CHART CHECKING MOTOR TEMPERATURE REMOVAL OF POWERHEAD DISASSEMBLY OF POWERHEAD CLEANINGINSPECTION, AND REPAIR REASSEMBLY OF POWERHEAD REASSEMBLY OF POWERHEAD TO EXHAUST HOUSING BREAK-IN 5-2 5-2 5-3 5-5 5-5 5-6 5-8 5-10 5-12 5-13