2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 15Get this manual
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Specifications
168 (370) 172 (379) 66.2 (90) at 5,500 rmin 5,0006,000 33.0 (8.72, 7.26) at 6,000 rmin 700 50 In-line, 4-stroke, DOHC, 16 valves 1,596 (97.39) 79.0 81.4 (3.11 3.20) 9.6 Rem