Yamaha · Outboard

Yamaha F30 / F40

Yamaha’s F30 and F40 are one engine in two power settings: a 747 cc in-line three with a belt-driven overhead camshaft and six valves, weighing 94–102 kg and common on aluminium fishing boats and RIBs. The carburettor generation, the F40B (model code 67C) from 2000 and the F30A (69H) from 2001, had three carburettors; for the 2009 model year Yamaha switched to multi-point fuel injection, with model codes 6BG for the F40 and 6BT for the F30. The injected engine was sold in Europe as the F40F and F30B until 2025 and as the F40A, F40EA, F40EHA, F30A and F30EHA since 2026, and in Australia and the US under names such as F40FETL, F40LA, F40LEHA and F30LA; the 30 and 40 hp versions take the same service parts. The carburettor engines share the impeller, thermostat, external anodes and propeller hardware with it, but need their own pump kit, spark plugs, timing belt, oil filter and fuel filter. The European F40G, F40H, F40L and F40N are 996 cc four-cylinder engines and are covered on the F50/F60/F70 page.

Manuals & documents
Wear parts & part numbers
Service intervals
Specifications
Good to know
Videos & how-tos
On the marketplace

Manuals & documents

The links go straight to Yamaha. We host no manuals or drawings — the manufacturer’s copy is the current one.

Owner’s manual F30, F40 (6BG-28199-7J, November 2025) Operation manual cdn2.yamaha-motor.eu · PDF · EN · DE · FR · ES
Owner’s manual F30B, F40F (6BG-28199-7H, November 2023) Operation manual cdn2.yamaha-motor.eu · PDF · EN · DE · FR · ES
Owner’s manual F30B, F40F (6BG-28199-76, November 2012, the oldest edition online) Operation manual cdn2.yamaha-motor.eu · PDF · EN · DE · FR · ES
Yamaha Motor Europe owner’s manual library (outboards from 2013, all languages) Manual portal yamaha-motor.eu · EN
Yamaha Motor Europe product information guide 2024 with the F30B/F40F data sheet Spec sheet yamaha-motor.eu · PDF · EN
Yamaha Motor Europe parts catalogue Parts catalogue yamaha-motor.eu · EN
Yamaha Outboards (US): owner’s manuals by year, model and primary ID Manual portal yamahaoutboards.com · EN
Yamaha Outboards (US): 40 and 30 hp model page with specifications Product page yamahaoutboards.com · EN
Yamaha parts catalogue F40LA 2019 (model code 6BGK) with the scheduled-service parts list Parts catalogue outboardbits.com.au · EN
Yamaha parts catalogue F30LA 2025, all diagrams Parts catalogue outboardbits.com.au · EN
Yamaha parts catalogue F40FETL 2009, the first year with fuel injection Parts catalogue outboardbits.com.au · EN
Yamaha parts catalogue F40BETL 2008 (carburettor engine, model code 67C) Parts catalogue outboardbits.com.au · EN
Yamaha parts catalogue F30AETL 2005 (carburettor engine, model code 69H) Parts catalogue outboardbits.com.au · EN
Trade-a-Boat review of the F40F/F40LA, with notes on the switch from carburettors to injection Boat test tradeaboat.com.au · EN

Wear parts & part numbers

Part	OEM number	Also fits	Note
Water pump repair kit	`6BG-W0078-01-00`^{1,2,3,4,5,6,7}replaces 6BG-W0078-00-00	—	Fuel-injected engines (F30B, F40F, F30LA, F40LA and later; in every catalogue from 2009 to 2025): cover 63D-44312-00-00, cartridge insert 63D-44322-00-00, outer plate 63D-44323-00-00, impeller 6H4-44352-02-00, gasket 63D-44316-00-00, O-ring 93210-59MG7-00, water-seal damper 663-44366-00-00, Woodruff key 90280-03M03-00 and four bolts. The carburettor engines need the kit in the next row.
Water pump repair kit	`66T-W0078-01-00`^8,9,10,11,12replaces 66T-W0078-00-00	—	Carburettor F30A and F40B (2000–2009): the same impeller, insert and cover as above, but outer plate 66T-44323-00-00. Yamaha also lists it for the T25 high-thrust engine.
Raw water pump impeller	`6H4-44352-02-00`^{13,14,15,16,17,18,6}	—	The same impeller in every catalogue of both generations from 2000 to 2025; it is driven by Woodruff key 90280-03M03-00 and comes in both pump kits.
Engine oil filter	`5GH-13440-90-00`^{19,1,20,7,21,22}replaces 5GH-13440-61-00replaces 5GH-13440-60-00replaces 5GH-13440-20-00	—	Injected engines: spin-on cartridge, 18 N·m. The 2009 catalogue lists -20-00, the 2019 catalogue -60-00 and US service kits -61-00; all are now supplied as -90.
Engine oil filter	`5GH-13440-72-00`^{23,24,25,26,12,27}replaces 5GH-13440-00-00	—	Carburettor F30A and F40B: a different filter line from the injected engines. The 2001–2009 catalogues list 5GH-13440-00-00, now supplied as -72; US service kits for the 2001–2008 F40 contain -71-00. The first-year 2000 F40B was catalogued with 3FV-13440-00-00.
Spark plug	`94702-00418-00`^28,29,30,22	NGK `DPR6EB-9`²²	Injected engines: Yamaha’s number for the NGK DPR6EB-9; three per engine, gap 0.8–0.9 mm, 17 N·m.
Spark plug	`94701-00375-00`^31,32,33	NGK `DPR6EA-9`^31,32	Carburettor F30A and F40B: Yamaha’s number for the NGK DPR6EA-9, three per engine; not the EB plug of the injected engines.
Fuel filter (engine)	`6D8-WS24A-00-00`^{34,35,36,7,37}replaces 6D8-24563-00-00	—	Injected engines: element in the clear filter cup with water-level float under the cowling (cup now 6D8-WS24B-00, formerly 6D8-24562-00-00); the same in every catalogue from 2009.
Fuel filter O-ring	`6D8-24564-00-00`^1,3,34	—	Gasket of the filter cup; on Yamaha’s scheduled-service list together with the element.
Fuel filter (engine)	`6C5-24251-01-00`^38,1,20,39replaces 6C5-24251-00-00	—	Injected engines: in-line filter (‘strainer 1’) in the fuel hose under the cowling; on Yamaha’s scheduled-service list.
Fuel filter (engine)	`6BG-13915-01-00`^{40,41,1,42,43}replaces 6BG-13915-00-00	—	Injected engines: high-pressure filter at the fuel pump inside the vapour separator tank, a dealer job; Yamaha’s service list pairs it with the float chamber gasket 6BG-14984-00-00.
Fuel filter (engine)	`65W-24251-10-00`^{44,45,46,12,47}replaces 65W-24251-00-00	—	Carburettor F30A and F40B: in-line filter in the fuel hose under the cowling; the 2000 catalogue lists -00-00.
Carburettor repair kit	`65W-W0093-02-00`^{48,49,50,51,52,53}replaces 67C-W0093-00-00	—	Carburettor F30A and F40B: gaskets, float, needle valve and small parts for one carburettor; the engine has three. The F30 and F40 carburettors differ in their jets.
Thermostat	`66M-12411-01-00`^{26,23,54,55,56,57}replaces 6G8-12411-03-00replaces 6G8-12411-02-00	—	Under the thermostat cover on the cylinder block; the same for both generations. Catalogues up to 2004 list 6G8-12411-02-00, later ones -03-00.
Thermostat gasket	`62Y-12414-01-00`^{1,20,23,58,57}replaces 62Y-12414-00-00	—	Gasket of the thermostat cover, both generations; on Yamaha’s scheduled-service list, so fit a new one whenever the cover comes off.
Thermostat seal	`688-12412-00-00`^54,55,23,59	—	Rubber seal around the thermostat; in the catalogues of the injected engines and of the carburettor engines from 2007.
Timing belt	`6C5-46241-00-00`^{60,61,62,63,64,22}	—	Injected engines, every catalogue from 2009 to 2025 (listed under ‘oil pump’); the same belt as on the 996 cc F50, F60 and F70. Check every 100 h, replace at 1000 h.
Timing belt	`65W-46241-00-00`^65,66,67,68	—	Carburettor F30A and F40B (listed as ‘V-belt’ in the catalogues); the injected engines use the belt above.
Anode (engine)	`6G8-11325-00-00`^{28,54,29,30,69,22}	—	Injected engines: three small screw-in anodes in the cylinder head and one in the block next to the thermostat, each behind blind plug 6G8-11197-A0-00 with O-ring 93210-13M63. Yamaha has the cylinder-head anodes checked by a dealer every 100 h.
Anode (engine)	`62Y-11325-00-00`^{70,71,72,31,73,74}	—	One on the exhaust guide in the upper casing of every engine (under cover 66M-11327-00-94 on current engines, a grommet on older ones); the carburettor engines also have three of them in the cylinder head, each under grommet 66M-11328-00-00 (now -01).
Anode (clamp bracket)	`65W-45251-00-00`^{75,76,77,78,79}	—	One on the clamp bracket; the same on every model and year checked.
Anode (lower unit)	`67C-45371-00-00`^{80,81,82,83,84,22}	—	Trim tab under the anti-cavitation plate, which doubles as an anode; never paint it. Both generations.
Anode (lower unit)	`67C-45251-00-00`^80,1,82,85	—	Square anode on the lower unit next to the trim tab; on Yamaha’s scheduled-service list. Both generations.
Drain plug gasket	`90430-14M09-00`^{86,87,1,7,88,22}	—	Under the engine oil drain screw 90340-14M06-00 in the oil pan; fit a new one at every oil change and tighten the screw to 27 N·m.
Gear oil plug gaskets	`90430-08003-00`^13,15,1,7,22replaces 90430-08020-00	—	Two per gear oil change, under the drain screw 688-45341-10-00 and the level plug 90340-08002-00 (7 N·m); the older catalogues list 90430-08020-00.
Propeller nut	`90171-16011-00`^{80,81,82,89,22}	—	Castle nut, both generations: tighten to 34 N·m, line up a slot with the hole in the propeller shaft and lock it with a new cotter pin 91490-30025-00.
Propeller hardware kit	`91490-30025-00` · `663-45987-02-00` · `66T-45997-00-00`^{80,81,82,90,91,92}	—	Cotter pin 91490-30025-00 (never reuse it) and the spacers 663-45987-02-00 and 66T-45997-00-00 listed with the castle nut; the same on both generations.

Numbers checked against the sources below on 23 October 2026. Always confirm against your serial number and exact type before ordering.

Service intervals

Task	Interval
First service	After the first 20 h or 3 months: change engine oil and gear oil; check the fuel filter, fuel lines, spark plug caps and leads, propeller, nut and cotter pin, power trim and tilt; grease the greasing points²²
Engine oil change	First after 20 h or 3 months, then every 100 h or yearly²²
Oil filter	Every 100 h or yearly²²
Gear oil change	First after 20 h or 3 months, then every 100 h or yearly²²
Spark plug	Check or replace every 100 h or yearly; plug caps and leads at 20 h, then every 100 h (dealer)²²
Fuel filter	Check, clean or replace at 20 h, then every 100 h or yearly; fuel lines at the same times²²
Fuel pump	Check every 300 h or 3 years, replace if needed (dealer)²²
Raw water impeller	Impeller and pump housing: check every 100 h or yearly, replace every 300 h or 3 years (dealer)²²
Thermostat	Check every 100 h or yearly, replace if needed (dealer)²²
Timing belt	Check every 100 h or yearly; replace at 1000 h (dealer)²²
Valve clearance	Check and adjust every 500 h or 5 years (dealer)²²
Anode	External anodes: check every 100 h or yearly; anodes in the cylinder head: check every 100 h (dealer); anodes on the exhaust cover and exhaust guide: replace every 500 h or 5 years (dealer)²²
Lubrication	Greasing points at 20 h, then every 100 h or yearly; the clamp bracket through-tube bolt every 100 h (dealer, listed from the 2025 edition)²²
Propeller	Propeller, nut and cotter pin: check at 20 h, then every 100 h or yearly²²
Throttle body	Check and clean every 100 h or yearly (dealer; new in the chart of the 2025 edition)²²
Exhaust	Exhaust guide and exhaust manifold: check every 1000 h (dealer)²²

Hours or months, whichever comes first, from Yamaha Europe’s owner’s manual 6BG-28199-7J (first edition November 2025, F30 and F40); the 2012 edition for the F30B and F40F, 6BG-28199-76, gives the same intervals but does not yet list the throttle body and the clamp bracket bolt. The chart assumes about 100 h of use a year and regular flushing; “dealer” marks the jobs Yamaha leaves to its dealers. Under severe use (long trolling or full-throttle running, too little warm-up, frequent starts, shifting or changing loads) Yamaha asks for every service twice as often. Yamaha has no owner’s manual for the carburettor F30A and F40B online, so they have no chart of their own here.

Specifications

Type	Four-stroke, SOHC with toothed-belt drive; electronic fuel injection since the 2009 model year (F30B, F40F and later), three carburettors before (F30A, F40B)^22,93,51
Cylinders	3 in line, 6 valves (2 per cylinder)²²
Displacement	747 cc (45.6 cu in)^22,94
Bore × stroke	65.0 × 75.0 mm^22,94
Compression ratio	9.4:1^94,95
Power	F30: 22.1 kW (30 hp), F40: 29.4 kW (40 hp); Yamaha US rates both at 5500 rpm^22,94
Full-throttle range	5000–6000 rpm²²
Idle speed	750–850 rpm in neutral²²
Ignition	CDI^22,95
Spark plug	Injected engines: NGK DPR6EB-9, gap 0.8–0.9 mm; carburettor F30A and F40B: NGK DPR6EA-9; 3 per engine^22,31,32
Valve clearance (cold)	Intake 0.15–0.25 mm, exhaust 0.25–0.35 mm²²
Engine oil capacity	1.7 l with filter change, 1.5 l without; wet sump^22,94
Engine oil grade	Yamalube 4 or another four-stroke outboard oil, SAE 10W-30, 10W-40 or 5W-30, API SE or higher; if none is available, SAE 15W-40, 20W-40 or 20W-50, API SH or higher. Yamaha US names Yamalube 4M^22,94
Gear ratio	2.00:1 (26/13), propeller mark G^22,13
Gear oil capacity	0.430 l of Yamalube outboard gear oil or hypoid gear oil SAE 90, API GL-4²²
Tilt	Hydro tilt: F30BEHD, F40FED, F40FEHD and, from 2026, F30EHA, F40EA, F40EHA; power trim and tilt: F30BET, F40FET and, from 2026, F30A, F40A. Names with H (EHD, EHA) are tiller models, the others remote-controlled; Yamaha Europe’s 2024 guide also lists EHT tiller models with power trim and tilt^96,22,95
Alternator	17 A maximum, of which 13 A for battery charging^22,95
Dry weight	With aluminium propeller: 94–98 kg with S shaft, 95–102 kg with L shaft, the tiller models heaviest; Yamaha US: 97–101 kg without oil and propeller^22,94
Shaft length	S 15 in (transom height 414 mm), L 20 in (536 mm)²²
Fuel	Regular unleaded petrol, at least RON 90, up to 10 % ethanol; with ethanol Yamaha recommends a water-separating filter (at least 10 micron) between tank and engine. Yamaha US: 87 octane and an external 10-micron fuel/water separating filter^22,94
Fuel consumption	About 11.5 l/h (F30) and 13.6 l/h (F40) at 5500 rpm, Yamaha reference values⁹⁵
Cooling	Raw water with thermostat; impeller pump in the lower unit, cooling-water pilot hole and a garden-hose flushing connector on the bottom cowling^22,13
Tightening torques	Spark plugs 17 N·m, oil drain screw 27 N·m, oil filter 18 N·m, gear oil plugs 7 N·m, propeller nut 34 N·m²²
Models	Model code on the serial label: 6BG = F40 with fuel injection (6BGK from 2018), 6BT = F30 with fuel injection (6BTK), 67C = F40B and 69H = F30A with carburettors. Australian catalogues: F40BETL, F40BMHDL, F40BWHTL (2000–2009), F30AETL, F30AEHTL, F30AMHDL (2001–2009), F40FETL, F40FEHDL, F40FEHTL, F30BETL, F30BEHTL (2009–2014), F40LA, F40LEHA, F40SA, F30LA, F30LEHA (2015–2025)^93,97,95
Years built	F40B with carburettors from 2000 and F30A from 2001, both until 2009; fuel injection since the 2009 model year (first serial numbers 6BG-1000001 and 6BT-1000001); still built in 2026 (European manual of November 2025)^93,97,22

Good to know

Read the model code on the serial label before you order: 6BG (F40) and 6BT (F30), with a K added from 2018, are the injected engines; 67C (F40B) and 69H (F30A) are the carburettor engines of 2000–2009, which need a different pump kit, spark plug, timing belt, oil filter and fuel filter. Mind the names, too: a European F30A or F40A of 2026 is the current injected engine, an Australian F30AETL the old carburettor model, and a European F40G, F40H, F40L or F40N a 996 cc four-cylinder.^93,97,22,98
For an oil change, let the engine idle for 5–10 minutes with the motor upright, stop it and wait another 5–10 minutes, then pump the oil out through the dipstick guide or open the drain screw and fit a new gasket 90430-14M09-00 (27 N·m). It takes 1.5 l, or 1.7 l with a new filter, so measure the oil and check the dipstick before topping up.^22,86
The camshaft runs on a toothed belt that Yamaha wants checked every 100 h or yearly and replaced at 1000 h. On the injected engines it is 6C5-46241-00-00, the same belt as on the F50, F60 and F70; the carburettor engines take 65W-46241-00-00.^22,61,63,66
The injected engines have three fuel filters. Check the clear cup under the cowling before every trip: if enough water has collected to lift the float ring, have the tank checked and cleaned by a dealer. The in-line strainer (6C5-24251-01-00) and the high-pressure filter in the vapour separator tank (6BG-13915-01-00) are on Yamaha’s service list too. With fuel containing ethanol, Yamaha recommends an extra water-separating filter (at least 10 micron) between tank and engine.^{22,1,39,42,94}
Flush after every trip in salt water: with the engine off, screw a garden hose onto the connector on the bottom cowling and let fresh water run through for about 15 minutes; tilting the motor clear of the water helps. Then screw the connector back on firmly, otherwise cooling water escapes there and the engine overheats.²²
Apart from the trim tab and the anodes on the lower unit and clamp bracket, the injected engines have four small anodes in the cooling jacket and one on the exhaust guide. Yamaha has those in the cylinder head checked every 100 h and the ones on the exhaust cover and exhaust guide replaced every 500 h, both by a dealer; never paint the external anodes.^22,28,54,70

Videos & how-tos

Links to YouTube, nothing embedded. The maker’s own channel comes first; the rest are channels we found clear and correct for this model.

The Yamaha F40 with fuel injection (747 cc, three cylinders) on a Sea Jay 418 Swift Video Yamaha Marine Australia · maker’s channel · EN · 2 min
Removing, inspecting and refitting the water pump on a Yamaha F30/F40 Video Yamaha Outboard Motor Magician · EN · 5 min
Flywheel and timing belt on a Yamaha F30/F40: removal, inspection and fitting Video Yamaha Outboard Motor Magician · EN · 10 min
Anodes of a fuel-injected Yamaha F40 after 550 hours in salt water Video The Resto Workshop · EN · 2 min

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Sources

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