Optimum Wide Open Throttle RPM Ranges
Find the horsepower and configuration of your engine to determine the proper WOT RPM value.

EVINRUDE / JOHNSON OUTBOARDS (Direct injection / 4 stroke) HP/Model WOT RPM Gear Ratio 15 4-Stroke 5400-6000 1.92 25 4-Stroke 5000-5600 2.09 30 4-Stroke 5500-6100 2.09 40 4-Stroke 5200-5800 2.27 50 4-Stroke 5900-6500 2.27 60 4-Stroke 4700-5300 2.42 70 4-Stroke 5200-5800 2.42 90 4-Stroke 4500-5500 2.59 115 4-Stroke 5000-6000 2.59 140 4-Stroke 5600-6200 2.38 200 4-Stroke 5000-6000 2.29 225 4-Stroke 5000-6000 2.29 40 E-Tec 5000-6000 2.67 50 E-Tec 5500-6000 2.67 60 E-Tec 5500-6000 2.67 75 E-Tec 4500-5500 2.00 90 E-Tec 4500-5500 2.00 115 E-Tec 4500-5500 2.00 150 E-Tec 4750-5750 1.85 175 E-Tec 4750-5750 1.85 200 E-Tec 4750-5750 1.85 200 HO E-Tec 4500-5800 1.85 225 E-Tec 4500-5800 1.85 225 HO E-Tec 4500-5800 1.85 250 E-Tec 4500-5800 1.85 75 DI 4750-5250 2.00 90 DI 5250-5750 2.00 100 DI 5250-5750 2.00 115 DI 5250-5750 2.00 135 DI 4700-5250 1.86 150 DI 4700-5250 1.86 150 HO DI 4750-5250 1.86 175 DI 5250-5750 1.86 200 DI 5000-6000 1.85 200 HO DI 5500-6000 1.86 225 DI 5500-6000 1.85 225 HO DI 5500-6000 1.86 250 DI 5500-6000 1.86

EVINRUDE / JOHNSON OUTBOARDS (Carbureted 2 Stroke) HP/Model WOT RPM Gear Ratio 15 5500-6500 2.42 25 4500-5500 2.23 30 4500-5500 2.23 35 5200-5800 2.15 40 4500-5500 2.42 50 4500-5500 2.42 60 5000-6000 2.23 70 5000-6000 2.23 90 4500-5500 2.00 115 4500-5500 2.00 135 5000-6000 2.25 150 4500-5500 1.86 175 4500-5500 1.86 200 5000-6000 1.86 225 5000-6000 1.86 250 5000-6000 1.86

Mercury Outboards HP/Model WOT RPM Gear Ratio 6 4000-5000 2.00 6 4-Stroke 5000-6000 2.15 8 4500-5500 2.00 8 4-stroke 5000-6000 2.08 9.9 5000-6000 2.00 9.9 Saltwater 4500-5500 2.42 9.9 4-Stroke 5000-6000 2.08 9.9 BigFoot 5000-6000 2.42 15 5000-6000 2.00 15 4-Stroke 4500-5500 2.00 15 Big Foot 4500-5500 2.42 20 4500-5500 2.25 25 Classic 5000-6000 2.25 25 4-Stroke EFI 5000-6000 1.92 25 Big Foot 5500-6000 2.40 30 4500-5500 2.00 30 4-Stroke EFI 5250-6250 1.92 40 Classic 4500-5500 2.00 40 4-Stroke EFI 5500-6000 2.00 40 EFI BigFoot 5500-6000 2.00 50 Classic 5000-5500 1.83 50 4-Stroke EFI 5500-6000 1.83 50 EFI BigFoot 5500-6000 2.33 60 Classic 5000-5500 1.64 60 Big Foot 5000-5500 2.30 60 4-Stroke EFI 5500-6000 1.83 60 EFI BigFoot 5500-6000 2.33 75 Classic 4750-5250 2.30 75 4-Stroke EFI 4500-5000 2.33 75 OptiMax 5000-5750 2.33 90 Classic 5000-5500 2.30 90 4-Stroke EFI 5000-6000 2.33 90 OptiMax 5000-5750 2.33 115 4750-5250 2.07 115 4-Stroke EFI 5000-6000 2.07 115 OpitMax 5000-5750 2.07 125 Classic 4750-5250 2.07 125 SW 4750-5250 2.07 135 OptiMax 5000-5600 2.00 135 SW OptiMax 5000-5600 2.00 150 XR6 5000-5600 1.87 150 SW 5000-5600 1.87 150 EFI 5000-5600 1.87 150 OptiMax 5250-5750 1.87 150 SW EFI 5000-5600 1.87

Mercury Outboards HP/Model WOT RPM Gear Ratio 175 EFI 5000-5600 1.87 175 OptiMax 5250-5750 1.87 200 Classic 5000-5600 1.87 200 SW 5000-5600 1.87 200 EFI 5000-5800 1.87 200 EFI SW 5000-5600 1.87 200 OptiMax 5000-5750 1.75 225 EFI 5000-5800 1.75 225 4-stroke EFI 5000-6000 2.00 225 OptiMax 5000-5750 1.75 225 XL OptiMax SW 5000-5750 1.75 225 XL 4-stroke 5000-6000 2.00 250 XL EFI SW 5000-5800 1.75 135 Verado 5200-6400 2.08 150 Verado 5800-6400 2.08 175 Verado 5800-6400 2.08 200 Verado 5800-6400 1.85 225 Verado 5800-6400 1.85 250 Verado 5800-6400 1.85 275 Verado 5800-6400 1.85

MERCRUISER STERNDRIVES Model HP WOT RPM Gear Ratio 3.0 L 135 4400-4800 2.00 4.3 L 190 4400-4800 1.81 4.3 MPI 220 4400-4800 1.62 4.3 L EFI 210 4400-4800 1.62 5.0 L (A1) 220 4400-4800 1.62 5.0 L (B1) 220 4400-4800 1.65 5.0 L MPI (A1) 260 4600-5000 1.62 5 0 L MPI (B1) 240 4400-4800 1.65 5.7 L (A1) 250 4400-4800 1.62 5.7 L (B1) 250 4400-4800 1.65 5.7L EFI 260 4400-4800 1.47 5.7L EFI 260 4400-4800 1.65 350 Mag MPI (A1) 300 4600-5000 1.47 350 Mag MPI (B1) 300 4800-5200 1.50 350 Horizon 300 4600-5000 1.50 MX 6.2 MPI Horizon 320 4800-5200 1.65 MX 6.2 MPI 320 4800-5200 1.65 496 Mag 375 4400-4800 1.50 496 Mag HO 425 4600-5000 1.50

HONDA OUTBOARDS   HP/Model WOT RPM Gear Ratio 2 5000-6000 2.40 5 4000-5000 2.08 8 4500-5500 2.33 9.9 5000-6000 2.33 15 4500-5500 2.08 20 5000-6600 2.08 25 5000-6000 2.08 30 5700-6200 2.08 40 5000-6000 2.08 50 5500-6000 2.08 75 5000-6000 2.30 90 5000-6000 2.30 115 5000-6000 2.00 130 5000-6000 2.00 135 5000-6000 2.14 150 5000-6000 2.14 200 5000-6000 1.86 225 5000-6000 1.86

SUZUKI OUTBOARDS HP/Model WOT RPM Gear Ratio 5 4500-5400 1.91 6 4500-5500 1.91 DF9.9 4500-5500 1.91 DF15 5400-6000 1.91 DT25 4500-5500 1.91 DF25 4700-5300 2.09 DF30 5500-6100 2.09 DF40 5200-5800 2.09 DF50 5500-6500 2.09 DF60 4700-5300 2.42 DF70 5200-5800 2.42 DT85 5000-5600 2.08 DT100 5250-5750 2.08 115 EFI              5500-6000 2.08 140 EFI 5250-5750 2.08 150 EFI 5200-6000 1.86 225 EFI 5000-5600 1.86 DF90 4500-5500 2.59 DF115 5000-6000 2.59 DF140 5600-6200 2.59 DF200 5000-6000 2.29 DF225 5000-6000 2.29 DF250 5500-6100 2.29 VOLVO PENTA STERNDRIVES Model HP WOT RPM Gear Ratio Drive 3.0 GS 135 4200-4600 1.97 SX 4.3GL 190 4800 1.66 SX 4.3 GXi 225 4800 1.66 SX 5.0 GL 220 4800 1.51 SX 5.0 GXi 270 5000 1.51 SX 5.7 GS 260 4800 1.43 SX 5.7 GSi 280 5000 1.43 SX 5.7 GXi 320 5000 1.43 SX Diesels D3-110 105 3000 2.30 SX D3-130 125 4000 2.30 SX D3160 157 4000 2.30 SX AD31L 122 3800 2.30 SX AD31P 141 3900 2.30 SX

NISSAN / TOHATSU OUTBOARDS HP/Model WOT RPM Gear Ratio 2.5 3800-5200 1.85 3.5 4300-5200 2.15 4 4-Stroke 4500-5500 2.15 5 4500-5500 2.15 5 4-Stroke 4500-5500 2.15 6 4-Stroke 5500-6000 2.15 8 4500-5500 2.08 9.8 50005800 2.08 9.9 4-Stroke 4500-5500 2.08 15 4-Stroke 5000-6000 1.85 18 4750-5500 1.85 25 4800-5500 1.92 30 4800-5500 1.92 25 4-stroke 5000-6000 1.92 30 4-stroke 5250-6250 1.92 40 4500-5500 1.85 50 5000-5700 1.85 70 4900-5600 2.30 90 5000-5500 2.30 120 5200-5700 2.00 140 5200-5700 2.00

Yamaha Outboards HP/Model WOT RPM Gear Ratio 2 4000-5000 2.08 3 4500-5500 2.08 4 4-Stroke 4000-5000 2.08 5 4500-5500 2.08 6 4-Stroke 4500-5500 2.08 8 4500-5500 2.08 8 4-Stroke 5000-6000 2.08 8 4-Stroke HT 5000-6000 2.92 9.9 4500-5500 2.08 9.9 4-Stroke 4500-5500 2.92 9.9 4-Stroke HT 4000-5000 2.92 15 4500-5500 2.08 15 4-Stroke 4500-5500 2.08 25 4500-5500 2.08 25 4-Stroke 5500-6000 2.08 25 4-Stroke HT 5000-6000 2.42 30 4500-5500 1.85 30 4-Stroke 5000-6000 2.00 40 4500-5500 1.85 40 4-Stroke 5000-6000 2.00 50 4500-5500 1.85 50 4-Stroke 5000-6000 1.85 50 High Trust 5000-6000 2.33 60 4500-5500 2.33 60 High Thrust 5000-6000 2.33 60 4-Stroke 5000-6000 1.85 70 5000-6000 2.33 70 4-Stroke 5000-6000 2.31 80 4-Stroke 5000-6000 2.31 90 4500-5500 2.00 90 4-Stroke 5000-6000 2.31 100 4-Stroke 5000-6000 2.31 115 4500-5500 2.00 115 4-Stroke 5000-6000 2.15 130 5000-6000 2.00

Yamaha Outboards HP/Model WOT RPM Gear Ratio 150 SW EFI 4500-5500 1.86 150 HPDI 4500-5500 1.86 150 4-Stoke 5000-6000 2.00 150 V Max 4500-5500 2.00 150 V Max HPDI             4500-5500 2.00 150 V Max TRP 4500-5500 2.00 150 V Max EFI 4500-5500 2.00 175 HPDI 4500-5500 1.86 175 V Max 4500-5500 1.86 200 4-Stroke 5000-6000 2.00 200 SW EFI 4500-5500 1.86 200 HPDI 4500-5500 1.86 200 V Max HPDI 4500-5500 1.81 200 V Max 3.1 EFI 4500-5500 1.81 225 4-Stroke 5000-6000 2.00 225 SW EFI 4500-5500 1.81 225 V Max 3.1 EFI 4500-5500 1.81 225 V Max HPDI 4500-5500 1.75 250 4-Stroke 5000-6000 2.00 250 SW EFI 4500-5500 1.81 250 V Max 3.1 4500-5500 1.81 250 V Max HPDI 4500-5500 1.75 300 HPDI 4650-5650 1.75 300 V Max HPDI 4650-5650 1.75