This page puts the core specifications of Suzuki's four-stroke outboards in two tables: engine figures (output, cylinders, displacement, bore and stroke, full-throttle operating range and idle speed) and rigging figures (gear ratio, alternator output, weight and transom height). Every number is copied from a Suzuki owner's, service or set-up manual, and the notes under the tables say which manual, year and serial range each family's figures come from.
A dash means the manual we have does not print that value; it is not a zero and not a guess. Weights and transom heights change with the variant (tiller, electric, remote, power tilt, high-thrust) and sometimes with a manual revision, so the weight column names the variant and the source. If you are choosing a shaft length, measure the transom first using how to measure for shaft length.
Engine specifications
| Model | Maximum output kW (PS) | Cylinders | Displacement | Bore × stroke | Full-throttle range (r/min) | Idle speed in neutral (r/min) |
|---|---|---|---|---|---|---|
| DF2.5 | 1.8 (2.5) | 1 | 68 cm3 (4.1 cu in) | 48.0 × 38.0 mm (1.89 × 1.50 in) | 5250 – 5750 | 1900 ± 100 |
| DF4A | 2.9 (4) | 1 | 138 cm3 (8.4 cu in) | 60.4 × 48.0 mm (2.38 × 1.89 in) | 4000 – 5000 | 1300 ± 50 |
| DF6A | 4.4 (6) | 1 | 138 cm3 (8.4 cu in) | 60.4 × 48.0 mm (2.38 × 1.89 in) | 4750 – 5750 | 1300 ± 50 |
| DF4 / DF5 / DF6 (earlier carbureted models) | 2.9 (4) / 3.7 (5) / 4.4 (6) | 1 | 138 cm3 (8.4 cu in) | 62.0 × 46.0 mm (2.44 × 1.81 in) | 4000 – 5000 / 4500 – 5500 / 4750 – 5750 | 1300 ± 50 |
| DF8A | 5.9 (8) | 2 | 208 cm3 (12.7 cu in) | 51 × 51 mm (2.00 × 2.00 in) | 4700 – 5700 | 950 ± 50 |
| DF9.9A | 7.3 (9.9) | 2 | 208 cm3 (12.7 cu in) | 51 × 51 mm (2.00 × 2.00 in) | 5200 – 6200 | 950 ± 50 |
| DF9.9B | 7.3 (9.9) | 2 | 327 cm3 (20.0 cu in) | 60.4 × 57 mm (2.38 × 2.24 in) | 4700 – 5700 | 850 ± 50 |
| DF15A | 11.0 (15) | 2 | 327 cm3 (20.0 cu in) | 60.4 × 57 mm (2.38 × 2.24 in) | 5000 – 6000 | 850 ± 50 |
| DF20A | 14.7 (20) | 2 | 327 cm3 (20.0 cu in) | 60.4 × 57 mm (2.38 × 2.24 in) | 5300 – 6300 | 850 ± 50 |
| DF25A | 18.4 (25) | 3 | 490 cm3 (29.9 cu in) | 60.4 × 57.0 mm (2.38 × 2.24 in) | 5000 – 6000 | 850 ± 50 |
| DF30A | 22.1 (30) | 3 | 490 cm3 (29.9 cu in) | 60.4 × 57.0 mm (2.38 × 2.24 in) | 5300 – 6300 | 850 ± 50 |
| DF40A | 29.4 (40) | 3 | 941 cm3 (57.4 cu in) | 72.5 × 76.0 mm (2.85 × 2.99 in) | 5000 – 6000 | 800 ± 50 |
| DF50A / DF50AV | 36.8 (50) | 3 | 941 cm3 (57.4 cu in) | 72.5 × 76.0 mm (2.85 × 2.99 in) | 5300 – 6300 | 800 ± 50 |
| DF60A / DF60AV | 44.1 (60) | 3 | 941 cm3 (57.4 cu in) | 72.5 × 76.0 mm (2.85 × 2.99 in) | 5300 – 6300 | 800 ± 50 |
| DF70A | 51.5 (70) | 4 | 1502 cm3 (91.6 cu in) | 75.0 × 85.0 mm (2.95 × 3.35 in) | 5000 – 6000 | 700 ± 50 |
| DF75 | 55.2 (75) | 4 | 1502 cm3 (91.6 cu in) | 75.0 × 85.0 mm (2.95 × 3.35 in) | 5000 – 6000 | 700 ± 50 |
| DF80A | 58.8 (80) | 4 | 1502 cm3 (91.6 cu in) | 75.0 × 85.0 mm (2.95 × 3.35 in) | 5000 – 6000 | 700 ± 50 |
| DF90A | 66.2 (90) | 4 | 1502 cm3 (91.6 cu in) | 75.0 × 85.0 mm (2.95 × 3.35 in) | 5300 – 6300 | 700 ± 50 |
| DF100B | 73.6 (100) | 4 | 1502 cm3 (91.6 cu in) | 75.0 × 85.0 mm (2.95 × 3.35 in) | 5700 – 6300 | 700 ± 50 |
| DF100A | 73.6 (100) | 4 | 2044 cm3 (124.7 cu in) | 86 × 88 mm (3.39 × 3.46 in) | 5000 – 6000 | 700 ± 50 (service manual); 650 – 750 factory setting (owner's manual) |
| DF115A / DF115AS | 84.6 (115) | 4 | 2044 cm3 (124.7 cu in) | 86 × 88 mm (3.39 × 3.46 in) | 5000 – 6000 | 700 ± 50; 650 – 750 factory setting |
| DF140A | 103 (140) | 4 | 2044 cm3 (124.7 cu in) | 86 × 88 mm (3.39 × 3.46 in) | 5600 – 6200 | 700 ± 50; 650 – 750 factory setting |
| DF115B (DF115BG / DF115BZG) | 84.6 (115) | 4 | 2045 cm3 (124.8 cu in) | 86.0 × 88.0 mm (3.39 × 3.46 in) | 5000 – 6000 | 700 ± 50 (specifications table); 650 – 750 factory setting (idle adjustment page) |
| DF140B (DF140BG / DF140BZG) | 103.0 (140) | 4 | 2045 cm3 (124.8 cu in) | 86.0 × 88.0 mm (3.39 × 3.46 in) | 5700 – 6300 | 700 ± 50 (specifications table); 650 – 750 factory setting (idle adjustment page) |
| DF150A / DF150AZ | 110.3 (150) | 4 | 2867 cm3 (174.9 cu in) | 97.0 × 97.0 mm (3.81 × 3.81 in) | 5000 – 6000 | 600 – 700 |
| DF175A / DF175AZ | 128.7 (175) | 4 | 2867 cm3 (174.9 cu in) | 97.0 × 97.0 mm (3.81 × 3.81 in) | 5500 – 6100 | 600 – 700 |
| DF200A / DF200AS / DF200AZ | 147.0 (200) | 4 | 2867 cm3 (174.9 cu in) | 97.0 × 97.0 mm (3.81 × 3.81 in) | 5500 – 6100 | 600 – 700 |
| DF150AP | 110.3 (150) | 4 | 2867 cm3 (174.9 cu in) | 97.0 × 97.0 mm (3.81 × 3.81 in) | 5000 – 6000 | 600 – 700 |
| DF175AP | 128.7 (175) | 4 | 2867 cm3 (174.9 cu in) | 97.0 × 97.0 mm (3.81 × 3.81 in) | 5500 – 6100 | 600 – 700 |
| DF200AP | 147.0 (200) | 4 | 2867 cm3 (174.9 cu in) | 97.0 × 97.0 mm (3.81 × 3.81 in) | 5500 – 6100 | 600 – 700 |
| DF225 | 165.5 (225) | 6 | 3614 cm3 (220.5 cu in) | 95.0 × 85.0 mm (3.74 × 3.35 in) | 5000 – 6000 | 650 ± 50 |
| DF250 | 183.9 (250) | 6 | 3614 cm3 (220.5 cu in) | 95.0 × 85.0 mm (3.74 × 3.35 in) | 5500 – 6100 | 650 ± 50 |
| DF250AP | 183.9 (250) | 6 | 4028 cm3 (245.7 cu in) | 98.0 × 89.0 mm (3.86 × 3.50 in) | 5500 – 6100 | 650 ± 50 |
| DF300AP | 220.7 (300) | 6 | 4028 cm3 (245.7 cu in) | 98.0 × 89.0 mm (3.86 × 3.50 in) | 5700 – 6300 | 650 ± 50 |
| DF300B / DF300BMD | 220.7 (300) | 6 | 4390 cm3 (267.9 cu in) | 98.0 × 97.0 mm (3.86 × 3.82 in) | 5300 – 6300 | 600 ± 50 (specifications table); 550 – 650 factory setting (idle adjustment page) |
| DF350A / DF350AMD | 257.4 (350) | 6 | 4390 cm3 (267.9 cu in) | 98.0 × 97.0 mm (3.86 × 3.82 in) | 5700 – 6300 | 600 ± 50 (specifications table); 550 – 650 factory setting (idle adjustment page) |
The full-throttle range is the band your tachometer should reach at wide-open throttle with a normal load; if it does not, the propeller pitch is usually the reason. How to use the range to choose a prop is on the full-throttle RPM range and propeller guide, and the sizes Suzuki lists for each family are on the propeller chart.
Gear ratio, alternator, weight and transom height
These figures are printed in the service manuals (which stop at the DF140A) and, for transom height, in the dealer set-up manuals. Weight is "without engine oil" as Suzuki prints it; the cell names the lightest variant in the table and the heavier ones where the manual lists them. S, L and X are Suzuki's 15, 20 and 25 inch shaft lengths; XX is 30 inch.
| Family | Gear ratio | Alternator (battery charge coil output, 12 V) | Weight without engine oil | Transom height |
|---|---|---|---|---|
| DF2.5 | 13 : 28 (2.15); printed 13 : 28 (2.154) from serial 210001 | — | 13.0 kg (28.7 lb), 2006 – 2009 models; 14 kg (30.9 lb) from serial 410001 | S 435 mm (15 in) |
| DF4A / DF6A | — | — | — | S 441 mm (17.4 in), L 568 mm (22.4 in), 2017-model set-up manual |
| DF4 / DF5 / DF6 (earlier) | 12 : 23 (1.92) | None standard; optional charge coil 80 W | S 26.0 kg (55.1 lb), L 27.0 kg (57.3 lb); serial 110001 tables print S 25 kg (55.1 lb), L 26 kg (57.3 lb) | S 442 mm (15 in), L 569 mm (20 in) |
| DF8A / DF9.9A | 12 : 25 (2.08) | 80 W manual start; 120 W electric start | Manual-start tiller: S 39.5 kg (87 lb), L 42.0 kg (93 lb). Electric (AE): S 43.0 kg (95 lb), L 45.5 kg (100 lb). Remote (AR): S 41.0 kg (90 lb), L 43.5 kg (96 lb) | S 422 mm (15 in), L 549 mm (20 in) |
| DF9.9B / DF15A / DF20A | 12 : 25 (2.08) | 72 W manual start; 144 W electric start | Manual-start tiller: S 44 kg (97 lb), L 45 kg (99 lb). Electric (E): S 48 kg (106 lb), L 49 kg (108 lb). Remote (R): S 47 kg (104 lb), L 48 kg (106 lb). Power tilt: DF9.9BT S 52.5 kg (115.7 lb), L 54.5 kg (120.2 lb), X 57.0 kg (125.7 lb); DF9.9BTH/DF15ATH/DF20ATH L 55.5 kg (122.4 lb) | S 422 mm (15 in), L 549 mm (20 in). Power tilt models: S 426 mm (15 in), L 553 mm (20 in), X 680 mm (25 in) (service manual); the set-up manual prints S 427 mm (16.8 in), L 554 mm (21.8 in) |
| DF25A / DF30A | 11 : 23 (2.09) | 168 W | Manual-start tiller (DF25A/DF30A): S 62 kg (137 lb), L 63 kg (139 lb). Heaviest, ATH: S 73 kg (161 lb), L 74 kg (163 lb) | S 422 mm (15 in), L 549 mm (20 in); no X |
| DF40A / DF50A / DF60A | 11 : 25 (2.28), DF60AT/ATH; the AV high-thrust gearcase ratio is not in our manual | 228 W (DF60) | DF60AT: S 102 kg (225 lb), L 104 kg (229 lb), X 107 kg (236 lb). DF60ATH: L 108 kg (238 lb), X 111 kg (243 lb). DF40A/50A weights not in our manual | Service manual (DF60): S 403 mm (15 in), L 524 mm (20 in), X 651 mm (25 in). 2022 set-up drawings: DF40AT/DF50AT S 401 mm (15.8 in), L 522 mm (20.6 in); AV models L 525 mm (20.7 in), X 636 mm (25.0 in) |
| DF70A / DF75 / DF80A / DF90A / DF100B | 12 : 25 (2.08); total reduction 2.59 | 324 W (12 V 27 A at 3000 r/min) | DF70AT/80AT/90AT remote: L 156 kg (344 lb), X 160 kg (353 lb). DF75 (serial 340001 on): L 155 kg (342 lb), X 159 kg (351 lb). DF100BT: L 157 kg (346 lb), X 161 kg (355 lb). Tiller DF70ATH/90ATH: L 162 kg (357 lb), X 166 kg (366 lb). DF90AWQH: L 158 kg (348 lb), X 162 kg (357 lb) | L 511 mm (20 in), X 638 mm (25 in) in the base manual; the DF75 supplement prints L 514 mm (20 in), X 641 mm (25 in) |
| DF100A / DF115A / DF140A | 12 : 25 (2.08); total reduction 2.59 | 480 W | L 182 kg (401.3 lb) and 179 kg (395.7 lb); X 187 kg (412.3 lb) and 184 kg (406.8 lb). Two values are printed across the three models and our copy does not show which model takes which | L 534 mm (20 in), X 661 mm (25 in) |
| DF115B / DF140B | — | — | — | L (20 in) and X (25 in) shafts; the set-up drawing is labelled L 534 mm (21.0 in), X 661 mm (26.0 in) |
| DF150A / DF175A / DF200A | — | — | — | L (20 in) and X (25 in) shafts |
| DF150AP / DF175AP / DF200AP | — | — | — | L (20 in), X (25 in) and XX (30 in) shafts |
| DF225 / DF250 | — | — | — | — |
| DF250AP / DF300AP | — | — | — | L 508 mm (20 in), X 635 mm (25 in), XX 762 mm (30 in), set-up drawing |
| DF300B / DF350A | — | — | — | X (25 in) and XX (30 in) shafts |
Notes by family: which manual, which serial
- DF2.5. Owner's manual 99011-97J70-03B (2019) for the engine row; service manual 99500-97J01-01E, compiled on the 2006 model with supplements, for weight, gear ratio and transom height. The service manual also records the change from transistorized ignition to digital CDI.
- DF4A / DF6A. Owner's manual 99011-97L60-03B (September 2019, 2020 – 2024 models). It prints no weight, gear ratio or alternator figure. The transom heights are from the 2017-model set-up manual. The DF4/DF5/DF6 row is the earlier carbureted engine (service manual 99500-91J03-01E, 2002 base with supplements to serial 210001) with a different bore and stroke, listed for owners of those motors.
- DF8A / DF9.9A. Owner's manual 99011-99J40-03B (May 2014) and service manual 99500-99J00. Note the DF9.9A is a 208 cm3 carbureted twin; the DF9.9B is the 327 cm3 fuel-injected engine shared with the DF15A/DF20A. The service manual's bore and stroke print as 51 mm (2.01 in), the owner's manual as 2.00 in.
- DF9.9B / DF15A / DF20A. Owner's manual 99011-89LA0-03B (August 2019; the 2014 edition prints the same engine figures) and service manual 99500-89L00-01E with supplements for serial 310001 (adds DF9.9B and R models), 410001 (power tilt T models), 910001 (2018) and 440001 (2024). The service manual prints displacement as 327 cm3 (19.9 cu in); the owner's manual prints 20.0 cu in. Power-tilt weights and transom heights are from the 410001 supplement.
- DF25A / DF30A. Owner's manual 99011-94L60-03B (October 2018) and service manual 99500-94L10-01E (May 2014 production, serial prefixes 02504F and 03003F). Weights are printed for seven versions each: DF25A, AE, AR, AQ, AQE, ATH and AT (S 62 / 65 / 63 / 69 / 72 / 73 / 71 kg; L 63 / 66 / 64 / 70 / 73 / 74 / 72 kg), same table for the DF30A. The ECM is different for DF25A and DF30A.
- DF40A / DF50A / DF60A. Owner's manual 99011-88LB0-03B (April 2022, 2022 – 2024 model years). The service manual we have is the DF60AT/ATH manual 99500-88L01-01E (2010 model), so weight, gear ratio and alternator are DF60 figures. The DF50AV/DF60AV have a larger gearcase (1.05 L of gear oil against 0.61 L) and their transom heights differ, as the set-up drawings show. Set-up manual 99505-88L40-01E applies from serial 340001.
- DF70A / DF75 / DF80A / DF90A / DF100B. Owner's manual for the DF75/DF90A (prepared July 2023) and service manual 99500-87L10-01E (base serial 810001) with supplements for 140001 (2020), 240001 (2021), 340001 (2022, adds the DF75) and 440001 (2024). Weight and transom height moved by a few millimetres and a kilogram between the base manual and the supplements, which is why both are shown.
- DF100A / DF115A / DF140A. Owner's manual 99011-90J70-03B (June 2016) does not include the specification page in our copy; engine figures come from service manual 99500-92J00-01E (August 2012 production, revised 2016). The set-up manual gives the mounting bolt figures but no transom-height table or dry weight.
- DF115B / DF140B, DF150A – DF200A, DF300B / DF350A. Engine rows are from the current owner's manuals: 99011-99L20-03B (DF115BG/BZG and DF140BG/BZG, July 2021 print, 2022 – 2023 models), 99011-96LM0-03B (DF150A/AZ, DF175A/AZ, DF200A/AS/AZ, June 2023 print) and 99011-98L60-03B (DF300B/BMD and DF350A/AMD, July 2022 print, 2023 models). Each prints an idle figure on the specifications page and a slightly different "factory adjusted" range on the idle-speed adjustment page; both are shown. These owner's manuals print no weight, gear ratio or alternator figure, so those cells stay blank until the service manuals for these families are added. Shaft lengths are from the 2022 set-up manuals (99505-99L40-01E, 99505-96L60-01E, 99505-96L70-01E, 99505-98L40-01E) and the 2021 DF250AP/300AP manual 99505-98J40-01E.
- DF150AP – DF200AP, DF225 / DF250, DF250AP / DF300AP. Engine rows are from the 2020 and 2021 owner's manuals, which print the full specification table but no weight, gear ratio or alternator figure.
Fluid capacities are deliberately not repeated here; they are on the oil capacity chart and the gear oil capacity chart, and battery minimums are on the battery requirements chart.
Parts for this job
If you are shopping rather than servicing, Boat Max Online sells complete Suzuki outboards from 2.5 to 30 hp and parts for the whole range; the family service guides, from the DF2.5 to the DF300B/325A/350A guide, list the maintenance parts for each engine in this chart. We are an authorized Suzuki, Honda and Yamaha dealer; motors ship free and orders over $149 ship free to the lower 48.
Sources: Suzuki owner's manuals for DF2.5, DF4A/6A, DF8A/9.9A, DF9.9B/15A/20A (2014 and 2020), DF25A/30A, DF40A/50A/60A, DF75/90A, DF100A/115A/140A, DF115B/140B (99011-99L20-03B), DF150A/175A/200A (99011-96LM0-03B), DF150AP/175AP/200AP, DF225/250 (99011-93JL0-03B), DF250AP/300AP and DF300B/350A (99011-98L60-03B); Suzuki service manuals 99500-97J01-01E, 99500-91J03-01E, 99500-99J00, 99500-89L00-01E, 99500-94L10-01E, 99500-88L01-01E, 99500-87L10-01E and 99500-92J00-01E; Suzuki set-up manuals 99505-88L40-01E, 99505-87L50-01E, 99505-99L40-01E, 99505-96L60-01E, 99505-96L70-01E, 99505-98J40-01E and 99505-98L40-01E, plus our notes from the DF4A/6A, DF8A/9.9A, DF9.9B/15A/20A and DF25A/30A set-up manuals. Figures are Suzuki's published values; confirm against the manual for your model year and serial number.