Custom Boat Manual

Models › Beneteau

Beneteau Oceanis 390

Built 1987–? by Beneteau (France; some US models built in Marion, SC)

Own one? Keep her maintenance, manuals and checklists here — free for a week Shopping? Find the right used boat Looking at one? Sea-trial scorecard

About the Beneteau Oceanis 390

Researched from public sources for this model. Any individual boat may have been modified or repowered — confirm before relying on any figure.

Illustration of a Beneteau Oceanis 390
Illustration, not a photo of this model. AI-generated illustration of a typical large cruising sloop.
Built
1987–?
Builder
Beneteau (France; some US models built in Marion, SC)
Designer
Philippe Briand
Length
38.33 ft
Waterline
33.25 ft
Beam
12.83 ft
Draft
5.42 ft
Displacement
14,300 lb
Ballast
5,180 lb
Hull / keel
fin keel
Rig
sloop
Fuel
45 gal
Water
145 gal
Stern thruster
not fitted
Tank capacities — where the figures come from
  • Fuel 45 gal
    “Stainless steel tank, of about 175 litres” — search excerpt (1987), jachtmakelaardijkappers.nl · “Réservoir de carburant: 130 litres (34 gallons)” — search excerpt (1990), xboat.fr
    Only broker listings were found (about 175 L on a 1987 boat, 130 L on a 1990 boat), which can't correct our earlier figure. Beneteau's heritage page links a brochure and equipment list, but the brochure couldn't be checked.
  • Water 145 gal
    “Réservoir d'eau douce: 280 litres (74 gallons)” — search excerpt (1990), xboat.fr · “Tanks with a capacity of 640 litres ... for the storage of fresh water” — search excerpt (1987), dailyboats.com
    Listing figures scatter widely (280 L and 640 L), and none is a builder figure. We kept our earlier 145 gal (about 550 L) pending the Beneteau brochure.

Tanks are often replaced or added on older boats — check the tank labels or a survey for yours.

Thrusters and steering — where this comes from
  • Bow thruster unknown
    A builder equipment list exists but couldn't be checked.
  • Stern thruster not fitted
    Our earlier figure of none has no source; the builder equipment list that would settle it couldn't be checked.
  • Steering unknown
    Only automatically generated spec sites mention wheel steering; no reliable source was found.

Thrusters and steering are often replaced — check the units on your boat before ordering parts.

Fin keel with spade rudder; a wing keel (4.5 ft draft) was available. No model-specific problem sources were read.

Engines fitted

Manuals and brochures online

Hosted by the builder or an owners' association; they own the copyright.

Known problems for this model

No well-sourced problem reports found yet.

Engines & parts

Perkins 4.108 parts: good

Factory standard engine — you entered “Perkins 4.108”

Out of production but very well supported. Trans Atlantic Diesels (TAD) sells complete aftermarket rebuild kits (pistons, liners, rings, bearings, gaskets, valves, guides, seals), heads, blocks, crankshafts, genuine Perkins camshafts, rebuilt injection pumps and injectors, Jabsco/Sherwood raw water pumps, heat exchangers, starters, alternators and elbows, plus rebuilt exchange engines. The Westerbeke 4-107/4-108 family and some industrial engines share the base design.

Parts sources: Trans Atlantic Diesels (TAD), Foley Engines

Common problems (1)
  • Rear main (crankshaft) seal leak engine
    The original rope-type rear seal is notorious for leaking and often starts leaking again a few hundred hours after replacement; Foley sells a nylon/Teflon replacement seal meant to cure it, and owners check the crankshaft sealing surface for pitting.
    foleyengines.com · boatdesign.net · forums.sailinganarchy.com
Maker’s service schedule (13)
Engine oil & filter change
4.108(M) marine
150 hrs or 3 mo
“4.107(M) and 4.108(M) Engines ... Every 150 hours or 3 months (whichever occurs first). Drain and renew lubricating oil” — manufacturer (1973), fujiyachts.net
Fuel filters & water separator
4.108(M) marine
400 hrs or 1 yr
“Every 400 hours or 12 months (whichever occurs first). Renew final fuel filter element.” — manufacturer (1973), fujiyachts.net
Air filter / intake silencer
4.108(M) marine
150 hrs or 3 mo
“Every 150 hours or 3 months (whichever occurs first). ... Clean air intake gauze.” — manufacturer (1973), fujiyachts.net
Drive belts inspect / replace
4.108(M) marine
150 hrs or 3 mo
“Every 150 hours or 3 months (whichever occurs first). ... * Check drive belt tension.” — manufacturer (1973), fujiyachts.net
Valve clearance check / adjust
4.108(M) marine
2,400 hrs
“Every 2,400 hours ... Check and adjust valve tip clearances.” — manufacturer (1973), fujiyachts.net
Injector test / service
4.108(M) marine
2,400 hrs
“Every 2,400 hours ... Service atomisers.” — manufacturer (1973), fujiyachts.net
Transmission fluid change
4.108(M) marine
400 hrs or 1 yr
“Every 400 hours or 12 months (whichever occurs first). ... Change gearbox oil.” — manufacturer (1973), fujiyachts.net
Clean water trap
4.108(M) marine
150 hrs or 3 mo
“Every 150 hours or 3 months (whichever occurs first). ... Clean water trap.” — manufacturer (1973), fujiyachts.net
Check engine for oil and water leaks
4.108(M) marine
150 hrs or 3 mo
“Every 150 hours or 3 months (whichever occurs first). ... Check engine for leakage of oil and water.” — manufacturer (1973), fujiyachts.net
Lubricate dynamo rear bush (where fitted)
4.108(M) marine
150 hrs or 3 mo
“Every 150 hours or 3 months (whichever occurs first). ... Lubricate dynamo rear bush (where fitted).” — manufacturer (1973), fujiyachts.net
Check hoses and clips
4.108(M) marine
400 hrs or 1 yr
“Every 400 hours or 12 months (whichever occurs first). ... Check hoses and clips.” — manufacturer (1973), fujiyachts.net
Drain and clean fuel tank
4.108(M) marine
400 hrs or 1 yr
“Every 400 hours or 12 months (whichever occurs first). ... Drain and clean fuel tank” — manufacturer (1973), fujiyachts.net
Examine and service starter motor, generator etc.
4.108(M) marine
2,400 hrs
“Every 2,400 hours Arrange for examination and service of proprietary equipment, i.e. starter motor, generator, etc.” — manufacturer (1973), fujiyachts.net
Service part numbers (7)
Oil filter
later engines with spin-on filter
Perkins 2654403
“A genuine Perkins 4.108 oil filter - OE Part No. 2654403 ... Fits 4.108 and 4.108M.” — dealer, parts4engines.com · “Filter, Oil late type long 2654403, Length 130mm - 2654403” — dealer, lancingmarine.com
Oil filter
early engines with element-in-canister filter
Perkins 26540154
“A genuine Perkins 4.108 Oil Filter - OE Part No. 26540154” — dealer, parts4engines.com · “Filter, Oil early type 26540154, Length 122mm - 26540154” — dealer, lancingmarine.com
Fuel filter
cartridge-type filter housing (most engines)
Perkins 4326658
Replaces 26561117
Also: Delphi (CAV) 296
“A genuine Perkins 4.108 fuel filter - OE Part No. 4326658 ... supersedes ... 26561117.” — dealer, parts4engines.com · “Fuel Filter (296) Was 26561117 Now 4326658” — dealer, lancingmarine.com
Fuel filter
early engines with bowl-type filter housing
Perkins 30242
“A genuine Perkins 4.108 fuel filter element - OE Part Number 30242 ... fitted to early Perkins 4.108” — dealer, parts4engines.com · “Filter element, Fuel old type 30242, Length 74mm small element - 30242” — dealer, lancingmarine.com
Raw-water impeller
Jabsco raw-water pump (3270, 3370-200 or 9970-200)
Jabsco 1210-0001
“4.107M / 4.108M / LL 9970-200 040 3/4" BSP Flange SK229 3298 1210-0001” — manufacturer, marineengine.com
Raw-water pump kit
Jabsco 9970-200 pump
Jabsco SK229
“4.107M / 4.108M / LL 9970-200 040 3/4" BSP Flange SK229 3298 1210-0001” — manufacturer, marineengine.com
Raw-water pump kit
Jabsco 3370-200 pump (obsolete)
Jabsco SK33
“4.107M / 4.108M / LL 3370-200 ... 9970-200 SK33 3298 1210-0001” — manufacturer, marineengine.com

From the engine maker’s parts lists, or two independent parts dealers. Numbers change with serial number and get superseded — check yours before ordering.

Model sources (3)

sailboatdata.com · sailcentral.com · forums.sailboatowners.com

Own a Beneteau Oceanis 390? Add her to your boats, then share a photo — names, numbers and faces are blurred before it appears.

Other Beneteau models

Researched from public sources. Spotted an error? The sources are listed above — tell us what they got wrong.