1971 Evinrude 40HP outboards Service Manual, Page 77Get this manual
cWith gearshift in neutral, turn speed control grip until magneto stop butts against shifter lock SPECIAL TOOL #378774
d, Push the lock link collar up against the locking lever just far enough to cause the end of locking lever to clear the stop lugs on the starter pulleySee Figure 8-2 337 4