2009 Yamaha F40 Outboard Service Manual, Page 213Get this manual

2009 Yamaha F40 Outboard Service Manual, Page 213

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Power unit
10 11 12 13 14 12

18 20 23 22
Remarks

13.5 Nm (1.35 kgfm, 9.96 ftlb)

No1 10 11 12 13 14 15 16 17

Part name Intake valve Exhau