Honda BF75, BF100, BF8A Outboard Motors Shop Manual, Page 30Get this manual
MAINTENANCE
THROTTLE GRIP FRICTION ADJUSTMENT
Engine serial number 10000041299999: Adjust the friction by turning the throttle grip end screw (A) Turn RIGHTto tighten (8) Turn LEFT: to loosen
Engine serial number 1300001subsequent: Adjust the friction by turning the throttle grip end adjuster (A) Turn RIGHT: to tighten (8) Turn LEFT: to loosen