Yamaha F100B F100C Outboards Factory Service Manual, Page 247Get this manual

Yamaha F100B F100C Outboards Factory Service Manual, Page 247

Gear pump (F100B) Checking the gear pump
1Check the gear pump assembly for damage or excessive wearReplace if necessary4Install the balls (3.18 mm [0.125 in]) 9, shuttle pistons 0, and balls (4.76 mm [0.187 in]) into the gear pump
S60C7490

Assembling the pump housing
1Install the new O-ring 1, up-relief valve seat 2, ball (3.18 mm [0.125 in]) 3, absorber valve pin 4, and spring into the pump housing
CAUTION:

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