Yamaha F100B F100C Outboards Factory Service Manual, Page 187Get this manual

Yamaha F100B F100C Outboards Factory Service Manual, Page 187

Quality of the image is intentionally reduced!

Propeller shaft housing (F100C) 2 Check the teeth and dogs of the reverse gear for cracks or wearReplace the gear if necessary
1 Remove the spring 1, and then remove the cross pin 2, dog clutch