Suzuki DF2.5 – Outboard
Photo: Isles Yacht Club, CC BY 2.0, via Wikimedia Commons

Suzuki · Outboard

Suzuki DF2.5

The DF2.5 is Suzuki’s smallest four-stroke outboard: a 68 cc single-cylinder OHV engine with carburettor, recoil start, battery-free CDI ignition and a 0.9 litre fuel tank on top, weighing about 13.5 kg. Sold since the 2006 model year as the DF2.5S (15 in shaft) and DF2.5L (20 in shaft), it is a common tender and inflatable motor; it shifts forward and neutral only and swivels 360° for thrust astern. For the 2012 model year (engine number 00252F-21xxxx on) Suzuki fitted a new carburettor, added a fuel pump, revised the water pump case and plate and replaced the shear-pin propeller with one held by a stopper and nut, so many service parts exist in two versions; the 2017 change was only a new colour. In Japan the same engine is sold as the 2 PS DF2, and the US names DF2.5S3/L3 and DF2.5A are the same motor.

Manuals & documents

The links go to Suzuki’s own documents — some as archived copies of pages the maker has since taken down. We host no manuals or drawings.

Wear parts & part numbers

PartOEM numberAlso fitsNote
Service kit17400-978101,2—Model year 2012 on (engine number from 00252F-21xxxx). Contents: impeller 17461-97JM0 with drive pin 09202-02006, pump plate 17471-97JL0 and gasket 17472-97JL0, pump case O-ring 09280-33005, spark plug 09482-00406 (NGK CR6HSA), anode 55321-87J01, oil drain washer 09168-10022, two gear oil plug gaskets 59178-97J00 and the propeller nut cotter pin 09204-03003.
Service kit17400-978201,2—Model years 2006–2011: the same kind of contents as the later kit, but with the earlier water pump plate and gasket.
Raw water pump impeller17461-97JM01,3,4—The same impeller for every model year from 2006; it comes in the maintenance kits.
Impeller drive key09202-020061,3,4—Pin, 2.9 × 14 mm, that drives the impeller; all years, also in the maintenance kit.
Pump cover O-ring09280-330051,3,4—O-ring 1.9 × 32.7 mm for the water pump case; all years, also in the maintenance kit.
Water pump plate17471-97JL01,5,4—Plate under the water pump, model year 2012 on; also in the maintenance kit. Motors from 2006–2011 take the earlier plate 17471-97J00 (one source, Brown’s Point), and their kit 17400-97820 brings the earlier plate.
Water pump gaskets17472-97JL01,5,4—Gasket under the water pump plate, model year 2012 on; also in the maintenance kit. For 2006–2011: 17472-97J00 (one source, Brown’s Point).
Spark plug09482-004061,7,8,9NGK CR6HSA1,6All years; gap 0.6–0.7 mm. One is in the maintenance kit.
Anode (lower unit)55321-87J011,10,11—Aluminium anode on the gear case, held by bolt 09103-06281; all years, one is in the maintenance kit.
Anode (engine)55321-95J0012,13—Anode inside the cylinder block, fixed with screw 09126-05011; the dealer checks it. All years. One source (Brown’s Point).
Drain plug gasket09168-100221,12,13—Washer 10 × 17 × 1.5 mm for the engine oil drain plug; fit a new one at every oil change. Also in the maintenance kit.
Drain plug09248-100081,12,13—Engine oil drain plug; all years.
Oil change kit99MAR-PITBX-00114—Suzuki Canada’s oil change box for the DF2.5 from 2006 to 2026: ECSTAR V7000 10W-40 and a drain plug washer. The DF2.5 has no oil filter.
Gear oil plug gaskets59178-97J001,10,11—Two per gear oil change, for the drain and the level screw; both are in the maintenance kit.
Thermostat17670-91J0212,13,15—50 °C (122 °F) thermostat in the cylinder block, under cover 17681-97J21 (2010 on); all years.
Thermostat gasket17685-97J0112,13,16—Gasket for the thermostat cover; all years.
Propeller58110-97JA0-01917,18,11—Model year 2012 on: 3-blade aluminium, 7-3/8 × 5-3/8 in, right-hand, per Suzuki Canada (Brown’s Point labels the same number 7-1/2 × 6 in). Held by a stopper, nut and cotter pin instead of a shear pin.
Propeller nut58130-91JL0 · 09204-030031,18,11—Propeller nut and its cotter pin, model year 2012 on; a new cotter pin comes in the maintenance kit.
Propeller58111-97J00-01910,19—Model years 2006–2011, shear-pin type: 3 blades, 188 mm diameter × 135 mm pitch. One source (Brown’s Point).
Shear pin09202-04002 · 09204-0200110,20,19—Shear pin and cotter pin for the 2006–2011 propeller. Two spare shear pins clip into a holder (61521-91J00) on the lower engine cover: check they are still there and carry a spare cotter pin too. One source (Brown’s Point).
Fuel filter (engine)66100-97JL121,22replaces 66100-97JL0—Fuel cock with the fuel filter built in, model year 2012 on. One source (Brown’s Point).
Fuel filter (engine)66100-97J0123,24—Fuel cock with the fuel filter built in, model years 2006–2011. One source (Brown’s Point).
Carburettor13200-97J5025,26—Complete carburettor, model year 2012 on. One source (Brown’s Point).
Carburettor13200-97J4127,28—Complete carburettor, model years 2006–2011. One source (Brown’s Point).

Numbers checked against the sources below on 13 October 2026. Always confirm against your serial number and exact type before ordering.

Service intervals

TaskInterval
First serviceRunning-in over the first 10 h: 2 h at no more than half throttle (the first 15 minutes at idle in gear), 1 h up to three-quarter throttle, then 7 h with full throttle for at most 5 minutes at a time. At 20 h or after the first month: change engine and gear oil; at 20 h also check anodes, carburettor, propeller, nut and pin and the valve clearance (dealer), and grease all points6
Engine oil changeEvery 100 h or every 6 months, first time after 20 h6
Gear oil changeEvery 100 h or every 6 months, first time after 20 h6
Spark plugClean, check and re-gap every 100 h or 6 months and before laying up; replace when worn (a new plug comes in the maintenance kit)6
Fuel filterFilter in the fuel cock: check every 100 h or 6 months and before laying up (dealer)6
Raw water impellerCheck every 200 h or yearly and before laying up (dealer); Suzuki USA’s chart for all its portable motors says replace every 300 h or 3 years6,29
ThermostatCheck every 200 h or yearly and before laying up6
Valve clearanceCheck at 20 h, then every 200 h or yearly (dealer)6
CarburettorCheck at 20 h, then every 100 h or 6 months and before laying up6
AnodeGear case anode: check at 20 h, then every 100 h or 6 months and before laying up; replace it once worn to about two thirds of its size, and never paint it. The dealer checks the anode inside the cylinder block every 100 h or 6 months6
PropellerCheck propeller, nut and pin at 20 h, then every 100 h or 6 months and before laying up; retighten the nut6
LubricationGrease at 20 h, then every 100 h or 6 months and before laying up6
Full serviceFit Suzuki’s maintenance kit every 100 h or yearly, whichever comes first (Suzuki USA parts catalogue)1

Hours or months, whichever comes first, from Suzuki’s Japanese owner’s manual for the DF2 (99011-97JA0, July 2023), the 2 PS version of the same 68 cc engine; the English DF2.5 manuals are view-only downloads and were not compared. That manual sets 6 months for engine oil, gear oil and most checks, while Suzuki USA’s quick reference for all its portable motors says 100 h or 12 months; the impeller replacement at 300 h or 3 years also comes from that general chart, not from a DF2.5 manual. Jobs marked “dealer” are workshop jobs in the manual.

Specifications

TypeFour-stroke, single cylinder, OHV with 2 valves (pushrods); carburettor; recoil start30
Displacement68 cc (4.15 cu in)30
Bore × stroke48 × 38 mm; Suzuki USA’s 2019 product sheet prints 2.38 × 1.89 in, which are the DF6A’s figures30,31
Power1.8 kW (2.5 hp); the Japanese DF2: 1.49 kW (2 PS) at 5000 rpm30,6
Full-throttle range5250–5750 rpm30
CoolingRaw-water cooled: rubber-impeller pump, 50 °C thermostat in the cylinder block6
LubricationPressure lubrication by a rotor-type oil pump; no oil filter6
Engine oil capacity0.38 l, up to the upper mark in the sight window; the 2006 brochure and Suzuki USA’s spec table give 0.3 l29,6,30,32
Engine oil gradeFour-stroke oil API SG or higher, SAE 10W-40 (all year) or 10W-30, SAE 5W-30 below −5 °C; Suzuki recommends its ECSTAR FC-W marine oil6
Gear oil capacityapprox. 70 ml6
Gear oil gradeSuzuki outboard gear oil or hypoid gear oil SAE 90, API GL-56
Spark plugNGK CR6HSA6,1
Spark plug gap0.6–0.7 mm6
IgnitionDigital CDI; runs without a battery and has no alternator32
FuelUnleaded petrol, at least RON 91 (AKI 87), up to 10 % ethanol, no E1529
Fuel tank0.9 l tank built into the top of the motor, with fuel cock; the fuel filter sits inside the fuel cock6
Shaft lengthS 15 in (381 mm), L 20 in (508 mm)30
Weight13.5 kg (S) / 14 kg (L) in Suzuki’s global catalogue; Suzuki USA’s documents give 29 to 30.8 lb30,33,31
GearboxForward and neutral only, 2.15:1; no reverse gear, the motor swivels 360° for thrust astern; exhaust above the propeller31
Propeller3-blade aluminium, 7-3/8 × 5-3/8 in, right-hand (Suzuki Canada, 58110-97JA0-019, 2012 on); other Suzuki documents give 7-1/2 × 5-1/2 in (2006 brochure) or 5-3/8 × 6 in (2019 product sheet)17,32,31
TiltManual, tilt pin with 4 positions33
VersionsDF2.5S (15 in shaft) and DF2.5L (20 in shaft), tiller and recoil start; the US model codes DF2.5S3/L3 (2021) and the current US name DF2.5A are the same engine. Model year 2012 (engine number 00252F-21xxxx on): new carburettor, added fuel pump, revised water pump case, plate and gasket, propeller on stopper, nut and cotter pin instead of a shear pin. 2017: colour change only (painted parts from code -0EP to -YAY, Nebular Black). Japan: DF2, 1.49 kW (2 PS), the same 68 cc engine1,34,6
ModelsThe engine number begins with 00251F (2006–2009) or 00252F (2010 on); the serial number shows the model year, e.g. 00252F-21xxxx = 2012, 00252F-64xxxx = 202634
Years builtFrom the 2006 model year (launched as “new for 2006”), still in Suzuki’s 2025/2026 range32,30

Good to know

  • Read the engine number before you order parts: from 00252F-21xxxx (model year 2012) on, the motor takes maintenance kit 17400-97810, the later pump plate and gasket, the newer carburettor and the propeller on a nut; older motors need the 2006–2011 versions.1,34
  • New motors leave the factory without engine oil. Fill about 0.38 l of 10W-40 until the level reaches the upper mark in the sight window, and check it with the motor upright before every trip.29,6
  • The fuel filter sits inside the fuel cock. Before transport or storage, close the cock and run the carburettor dry or drain it at the float bowl drain screw: its tiny jets gum up quickly with stale or ethanol fuel.6
  • If the motor has to lie down, drain the carburettor and close the fuel cock and the tank vent first, then lay it with the shift lever facing up and the powerhead higher than the propeller, cylinder-head side slightly raised. Laid any other way, oil from the sump can run into the cylinder.6
  • The gear case holds only about 70 ml. Fill from the lower drain hole until oil comes out of the level hole, fit new gaskets (59178-97J00) on both screws, and see a dealer if the old oil looks milky: that means water in the gear case.6,1
  • The DF2.5 has no flushing port: after salt water, run it in neutral for about five minutes in a tank with the water about 13 cm (5 in) above the anti-ventilation plate, then stand it upright to drain.29

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Sources

  1. assets.suzukimarine.com/wp-content/uploads/2026/10/02165300/Suzuki-PARTS-Catalog-SEP30202…
  2. suzuki.ca/product/marine-maintenance-kit/?attribute_pa_model=df2-5-12-26
  3. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=9788
  4. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=33636
  5. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=18391
  6. suzukimarine.co.jp/boat/download/df2.pdf
  7. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=9783
  8. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=33630
  9. wakeboss.com/products/suzuki-spark-plug-3
  10. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=9798
  11. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=33647
  12. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=9784
  13. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=33631
  14. suzuki.ca/product/marine-oil-change-pitbox-kit-for-df2-5-df140b/?attribute_pa_style=df2-5
  15. wakeboss.com/products/suzuki-17670-91j02-thermostat
  16. wakeboss.com/products/suzuki-17685-97j01-thermostat-gasket
  17. suzuki.ca/product/df2-5-propeller/
  18. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=40
  19. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=9903
  20. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=9799
  21. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=44
  22. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=33650
  23. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=9803
  24. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=9908
  25. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=8529
  26. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=33634
  27. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=9787
  28. brownspoint.com/t-bpassemblydetail.aspx?assemblyId=9892
  29. assets.suzukimarine.com/wp-content/uploads/2026/08/03131308/Portables-Setup-Guide-WEB-FIN…
  30. globalsuzuki.com/marine/files/product-catalog.pdf
  31. assets.suzukimarine.com/wp-content/uploads/2022/06/21100606/2019-DF2.5-4A-6A-PIB.pdf
  32. web.archive.org/web/20060311193904/http://www.suzukimarine.com/brochures/images/bro/df2.5…
  33. suzukimarine.com/outboard/2-5-30hp/df2-5/
  34. brownspoint.com/t-bpmodel.aspx?modelId=1

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