Honda BF75, BF100, BF8A Outboard Motors Shop Manual, Page 112Get this manual
CONSTRUCTION AND FUNCTION
POWER TRANSMITTING SYSTEM
A 4-cycle, water cooled, 2-cylinder, 197 cc overhead camshaft gasoline engine is installed on the BF75, BF100, and BF8A motorsThe turning effort of the crankshaft (1) is transmitted to the propeller shaft (5) through the vertical shaft (2)pinion shaft (3), and bevel gears (4)
1Power flowFORWARD: When the shift lever (6) is placed in FORWARD, the shift rod (8) is moved in direction "A" through the shift shaft (7) This causes the spring to move the clutch shifter in direction "B" and into engagement with the forward bevel gear (10) Power from the engine is then transmitted through the bevel pinion (11)forward bevel gear, clutch shifter (9)and propeller shaft (5) to the propellerThe propeller rotates clockwise2Power flowNEUTRAL: In NEUTRAL, effort on the shift lever causes the shift rod to move the shifter out of engagement with the bevel gearsSince the shifter is disengaged, no power can be transmitted to the propeller shaftThe bevel pinion is placed midway between the two bevel gears3Power flowREVERSE: When the shift lever is placed in REVERSEthe shift rod is moved in direction "0 "The movement is transmitted to the clutch shifter, causing it to move in direction "E" Rotation is reversed since the shifter is in engagement with the reverse bevel gear (12) FORWARD NEUTRAL REVERSE