2000-2005 Yamaha F40B Outboard Service Manual, Page 367Get this manual
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UPPER CASE ASSEMBLY
23.6 Nm(2.4 kg!, ,1,7.4 It Ib) ;
JobPart Lower unit Bottom cowling
Remarks Refer to "LOWER UNIT" on page 6-1 Refer to "BOTTOM COWLING" on page 7-7