1976 Evinrude 40HP outboards Service Manual, Page 42Get this manual
SAFETY SWITCH
SHIFTER LOCK STOP
Figure 4-37Checking Timing with Engine Running
ARMATURE PLATE ASSEMBLY
oStart engine .and check timing with timing lightEach breaker point setting must be such that, when checked with timing light connected to each high tension lead, the flywheel timing mark must line up between the two index marks on the armature plateOperate engine at 1000 RPM for this testSee Figure 4-37
BOSS ON CYLINDER FOR GUIDING SHIFTER LOCK