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Pearson 323

Built 1976–1983 by Pearson Yachts

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About the Pearson 323

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

Pearson 323
Photo: Sailod, CC BY-SA 4.0 via Wikimedia Commons · licence (names blurred)
Built
1976–1983
Builder
Pearson Yachts
Designer
William Shaw
Length
32.25 ft
Waterline
27.5 ft
Beam
10 ft
Draft
4.5 ft
Displacement
12,800 lb
Ballast
4,500 lb
Hull / keel
fin keel
Rig
sloop
Propulsion
inboard
Fuel
30 gal
Water
38 gal
Water heater
AC + engine · factory option
Stern thruster
not fitted
Steering
pedestal cable · Edson
Tank capacities — where the figures come from
  • Fuel 30 gal
    “30 Gallons (U.S.) FUEL CAPACITY” — owner's manual (1978), pearson323.com · “30 gallon monel or aluminum fuel tank” — owners' association (1977), pearson323.com
    Builder's 1978 owner's manual and the 1977 Pearson information pages agree.
  • Water 38 gal
    “two (2) standard 19 gallon water tanks ... Total standard capacity 38 gallons” — owner's manual (1978), pearson323.com · “Total capacity of 38 gallons or 78 gallons with optional bow water tank” — owners' association (1977), pearson323.com
    Standard is two 19 gal tanks under the main-cabin berths, 38 gal in total. An optional 40 gal bow tank under the V-berth brings it to 78. The figure we listed before, 70, matches neither.
  • Holding unknown
    Builder specs mention a holding-tank toilet system with Y-valve but give no capacity.
  • Water heater AC + engine · factory option
    “SECTION XI. B: OPTIONAL HOT AND COLD PRESSURE WATER SYSTEM ... Hot Water Heater ... at the forward end of the starboard” — owner's manual (1978), pearson323.com · “Optional Equipment ... Hot and cold pressure water system” — owners' association (1977), pearson323.com
    Pearson's 1978 owner's guide lists hot and cold pressure water as an option (standard boats have a galley foot pump and vanity hand pump). The optional heater sits in the starboard cockpit locker and is heated by an engine cooling-water coil or, if the boat has shore power, an electric element. No capacity given.

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
    The 1977 Pearson specification pages (standard and optional equipment, reproduced by the owners' site) list no thruster.
  • Stern thruster not fitted
    Our earlier figure of none had no source. The builder's specification and optional-equipment list names no thruster, but the option list shown is only partial.
  • Steering pedestal cable · Edson
    “Edson steerer with 5" Ritchie compass. Emergency tiller.” — owners' association (1977), pearson323.com · “Individual throttle and clutch controls mounted on steering pedestal.” — owners' association (1977), pearson323.com · “Edson Pedestal Steerer ... Chain & Wire Rope Assembly ... Adjustable Crossed Wire Idler ... Drive Wheel” — owners' association, pearsonyachts.org
    Pearson's detail specifications (on the owners' site) give an Edson pedestal steerer with emergency tiller. Edson's steering data sheet S-826 for the Pearson 323 shows a 28 in. wheel, with chain and wire rope over a crossed-wire idler to an 8 in. drive wheel on the rudder stock.

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

Shoal fin keel with skeg-hung rudder; balsa-cored deck. Standard Atomic 4 gas engine (sailboatdata lists 30 hp) with a 2-cylinder Volvo Penta diesel optional, both through a Walter V-drive; boat walks to port in reverse. Many have since been repowered. Sources read do not state whether the hull is solid or cored.

Engines fitted

Boats of the same model can differ — check which engines yours actually has before ordering parts.

Generator

Neither the 1977 specification nor the 1978 owner's guide lists a generator; shore power itself was optional. The guide mentions a generator only in a generic fueling checklist.

Manuals and brochures online

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

Known problems for this model

Engines & parts

Universal Atomic 4 parts: good

Factory standard engine — you entered “Atomic 4 (Universal) 5103-UJVD, V-drive”

Tens of thousands were built (sources say from 40,000 to 50,000). Despite being out of production for decades, the engine is well supported: Moyer Marine sells parts, rebuilt engines, fuel pump rebuilds and exhaust parts, and hosts an owners' forum; Old Lyme Marina and others also supply parts, and electronic ignition upgrades are available.

Parts sources: Moyer Marine

Common problems (3)
  • Raw-water cooling scale and corrosion cooling
    Most Atomic 4s are raw-water cooled, so the block scales up and corrodes, especially in salt water; cranking without starting can also flood the engine with seawater through the exhaust.
    goodoldboat.com · moyermarineforum.com · keelindex.com
  • Gasoline vapor fire/explosion risk fuel
    Gasoline vapor is heavier than air and settles in the bilge, so ventilation, blower use and shutting the fuel valve (a stuck carburetor float can overflow) matter.
    goodoldboat.com
  • Ignition and fuel system faults electrical
    Points, condenser, cap and wires, plus gummed carburetors and contaminated fuel, are the most common reasons an Atomic 4 won't run well.
    keelindex.com · goodoldboat.com
Maker’s service schedule (9)
Engine oil & filter change50 hrs
“3. FIFTY HOUR CHECK a. Using sump pump, remove all oil from crankcase. Refill with a good grade oil as specified in Tabl” — manufacturer, westerbeke.com
Fuel filters & water separator50 hrs
“e. Clean fuel pump strainer.” — manufacturer, westerbeke.com
Heat exchanger & oil cooler cleaning50 hrs
“b. Inspect oil cooler and remove any accumulation of grit or dirt.” — manufacturer, westerbeke.com
Clean flame arrestor100 hrs
“b. Inspect flame arrestor to be sure air passages are clean and free from oil. If dirty remove and wash with kerosene.” — manufacturer, westerbeke.com
Check clutch (reverse gear) adjustment100 hrs
“4. ONE HUNDRED HOUR CHECK ... c. Check adjustment of clutch.” — manufacturer, westerbeke.com
Valve clearance check / adjust150 hrs or 1 yr
“5. ONE HUNDRED FIFTY HOUR CHECK a. Check valve tappet adjustment.” — manufacturer, westerbeke.com
Spark plugs inspect / replace150 hrs
“b. Remove, clean, and reset spark plugs.” — manufacturer, westerbeke.com
Transmission fluid change
Universal V-drive unit (V-drive installations only; the standard reverse gear shares engine oil)
500 hrs
“(2) After the first 50 hours of operation, drain unit and refill ... (3) Change lubricant every 500 hours of operation.” — manufacturer, westerbeke.com
Complete overhaul3,000 hrs
“At the end of three thousand hours of operation the engine should be completely overhauled.” — manufacturer, westerbeke.com
Service part numbers (8)
Oil filter
optional add-on oil filter (not standard equipment)
Universal 276236
“2 Element or Cartridge 1 276236 (Oil Group, Oil Filter, Not Standard Equipment)” — manufacturer, westerbeke.com
Raw-water impeller
Oberdorfer N202M-03 / N202M-07 replacement raw-water pump (Universal pump 295625)
Oberdorfer 6593
“5 Impeller 6593 6593 6593 6593 6593 1 (N202M, N202M-03, N202M-07 parts list)” — manufacturer, pumpsandpartsonline.com · “Impeller : Catalog # 6593, Impeller” — dealer, pumpagents.com
Raw-water pump kit
Oberdorfer N202M-03 / N202M-07 raw-water pump
Oberdorfer 10725
“REPAIR KIT N202M N202M-03 N202M-07 10725” — manufacturer, pumpsandpartsonline.com · “Catalog # 10725, Repair Kit, includes O-Ring, Snap Ring, Impeller, 2 x Lip Seal” — dealer, pumpagents.com
Drive belt
alternator belt (Prestolite and Motorola alternators)
Universal 239387
“19 Belt 1 239387 (12 Volt - Motorola 51 Amp Alternator)” — manufacturer, westerbeke.com
Spark plug Universal 273276 × 4
“8 Spark plugs, champion 4 273276” — manufacturer, westerbeke.com
Thermostat
late style, from 1967 / serial #79476 (Holley 145 F, on cylinder head)
Universal 200206
“12 Thermostat Kit 1 200206 consists of 262278 and 261601” — manufacturer, westerbeke.com
Thermostat
Dole type, before serial #79476 (on manifold)
Universal 200207
“13 Kit, Thermostat (consists of 275965 & 261144) 1 200207” — manufacturer, westerbeke.com
Zinc / anode
fresh-water-cooled engines only (Universal heat-exchanger kit)
Universal 299760
“23 zinc pencil 1 299760 (Cooling, Fresh Water System, after serial #79476)” — manufacturer, westerbeke.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.

Sources disagree on first year, last year, number built — left blank rather than guessed.

Volvo Penta MD11C/D / MD17C/D parts: limited

Factory optional engine — you entered “Volvo Penta MD11C”

Produced 1975–1984 and developed from the MD2B/MD3B, sharing many internals but with cylinder liners. European specialists (Poseidon Marine) sell overhaul kits, liners, piston rings, bearings, gaskets, water pump kits and fuel parts; genuine parts are listed by Volvo dealers. Some items, such as original injector fuel lines, are discontinued.

Parts sources: Poseidon Marine (MD11/MD17 parts), Power Products Systems (genuine Volvo Penta parts), US Boatworks (NLA Volvo parts)

Common problems (2)
  • Leaking injector lines with discontinued replacements fuel
    Owners find the high-pressure lines from injection pump to injectors leaking and genuine replacements no longer available, forcing custom-made lines.
    facebook.com
  • Saildrive parts hard to find running gear
    MD11C engines paired with early saildrives have parts that are difficult to locate.
    cruisersforum.com
Maker’s service schedule (9)
Engine oil & filter change50 hrs
“skall oljan bytas första gången efter 20 driftstimmar och i fortsättningen var 50:e driftstimme” — manufacturer, albinmotor.com
Engine oil filter change100 hrs or 1 yr
“Oljefiltret skall bytas första gången efter 20 driftstimmar under inkörningstiden och sedan vid vartannat oljebyte.” — manufacturer, albinmotor.com
Transmission fluid change
Reverse-gear (non-saildrive) installations
200 hrs
“Oljebyte i backslag (var 200:e driftstimme)” — manufacturer, albinmotor.com
Valve clearance check / adjust50 hrs
“ÅTGÄRDER VAR 50:e DRIFTSTIMME: ... Ventilspel. Kontroll och justering” — manufacturer, albinmotor.com
Air filter / intake silencer100 hrs or 1 yr
“Luftfiltret bör demonteras och rengöras var 100:e driftstimme, eller en gång per säsong.” — manufacturer, albinmotor.com
Drive belts inspect / replace100 hrs or 1 yr
“ÅTGÄRDER VAR 100:e DRIFTSTIMME ELLER MINST EN GÅNG PER SÄSONG: ... Kontroll och byte av kilrem för generator” — manufacturer, albinmotor.com
Raw-water pump impeller100 hrs or 1 yr
“ÅTGÄRDER VAR 100:e DRIFTSTIMME ELLER MINST EN GÅNG PER SÄSONG: ... Kontroll av kylsystem (Kontroll och byte av pumphjul)” — manufacturer, albinmotor.com
Fuel filters & water separator100 hrs or 1 yr
“Finfilterelementet i bränslefiltret skall bytas minst en gång per säsong.” — manufacturer, albinmotor.com
Injector test / service3 yrs
“Vart tredje säsong bör insprutarna inlämnas till dieselverkstad för rengöring och kontroll” — manufacturer, albinmotor.com
Service part numbers (6)
Oil filter Volvo Penta 22057107
Replaces 834337
“p.90 "MD5, MD11" block: Oil filter — 22057107” — manufacturer, volvopenta.com · “Volvo Penta genuine oil filter to replace old model 834337 … MD11C/D … MD17C/D” — dealer, foxschandlery.com
Fuel filter
spin-on filter
Volvo Penta 21492771
Replaces 829913, 3825133
“p.90 "MD5, MD11" block: Fuel filter, spin-on — 21492771” — manufacturer, volvopenta.com · “Brandstoffilter Volvo Penta 21492771 (vervangt 829913) … MD11,MD11D,MD17,MD17D” — dealer, bakker-ijlst.nl
Raw-water impeller
MD11C/D with sea-water pump cover plate held by 4 screws
Volvo Penta 21951342
Replaces 3586496, 875583
Also: Johnson 09-808B
“p.90 "MD5, MD11" block: Impeller kit (cover plate with 4 screws) — 21951342” — manufacturer, volvopenta.com · “Impeller kit for Volvo Penta RO: 21951342 3586496 875583 MD5 MD6 MD7 MD11 09-808B” — dealer, poseidonmarine.eu
Raw-water impeller
MD11C/D with sea-water pump cover plate held by 6 screws
Volvo Penta 3586494
Also: Johnson 09-806B, Jabsco 4528-0001, Sherwood 9979
“p.90 "MD5, MD11" block: Impeller kit (cover plate with 6 screws) — 3586494” — manufacturer, volvopenta.com · “MD5A* MD6A / MD11C*, MD11D* … Volvo Penta: 875807-0 803729 3586494 876689” — dealer, poseidonmarine.eu
Raw-water impeller
MD17C/D
Volvo Penta 22222936
“p.90 "MD3, MD17" block: Impeller kit — 22222936” — manufacturer, volvopenta.com · “IMPELLER KIT … Denne delen passer til... MD11C,MD11D,…,MD17C,MD17D” — dealer, volvopentaparts.shop
Thermostat Volvo Penta 876080
“Compatible with the following engines: … MD Series: MD11C MD11D MD17C MD17D MD1B MD2B MD3B” — dealer, marinepartsystem.com · “Thermostat Kit 876097 / 876080 suits Volvo Penta MD1B, MD2B, AQD3B, MD3B, MD11, C,D, MD17, C,D” — dealer, marineenergy.com.au

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

Yanmar 6LP (6LP-DTE / STE / 6LPA-STP) parts: good

Factory common repower engine — you entered “Yanmar YM30 (as listed)”

Supported by Yanmar dealers; the cooling stack (charge-air cooler, oil cooler, heat exchanger) is the main service expense.

Parts sources: Mack Boring & Parts (Yanmar distributor)

Common problems (2)
  • Neglected cooler service cooling
    The charge-air cooler, oil cooler and heat exchanger need regular removal and cleaning; a failing raw-water oil cooler can leak oil into the cooling water.
    youtube.com · facebook.com
  • Turbo problems limiting rpm exhaust
    Engines that won't reach rated rpm under load or burn oil are often traced to turbocharger wear or fouling.
    bertram31.com · facebook.com
Maker’s service schedule (17)
Engine oil & filter change
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
125 hrs or 6 mo
“Perform the following maintenance every 125 hours of operation or 6 months, whichever comes first. Changing the Engine O” — manufacturer, nhmr.nl
Fuel filters & water separator
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
250 hrs or 1 yr
“Perform the following maintenance every 250 hours or one year of operation, whichever comes first. Replacing the Fuel Fi” — manufacturer, nhmr.nl
Drain fuel tank water and fuel/water separator
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
50 hrs or 1 mo
“perform the following procedures every 50 hours thereafter or monthly, whichever comes first. Draining Water From the Fu” — manufacturer, nhmr.nl
Coolant replacement & freeze-point test250 hrs or 1 yr
“Perform the following maintenance every 250 hours or one year of operation, whichever comes first. ... Changing the Cool” — manufacturer, nhmr.nl
Engine pencil zincs
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
250 hrs or 1 yr
“Perform the following maintenance every 250 hours or one year of operation, whichever comes first. ... Checking or Repla” — manufacturer, nhmr.nl
Turbocharger inspection
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
250 hrs or 1 yr
“Perform the following maintenance every 250 hours or one year of operation, whichever comes first. ... Cleaning the Turb” — manufacturer, nhmr.nl
Air filter / intake silencer
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
250 hrs or 1 yr
“Perform the following maintenance every 250 hours or one year of operation, whichever comes first. ... Cleaning the Air” — manufacturer, nhmr.nl
Adjust remote control cable
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
250 hrs or 1 yr
“Perform the following maintenance every 250 hours or one year of operation, whichever comes first. ... Adjusting the Rem” — manufacturer, nhmr.nl
Exhaust mixing elbow inspection
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
500 hrs or 2 yrs
“Perform the following maintenance every 500 hours or 2 years of operation, whichever comes first. Cleaning or Replacing” — manufacturer, nhmr.nl
Replace fuel lines and rubber hoses
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
500 hrs or 2 yrs
“Replace fuel line and rubber hoses every 500 hours or 2 years, whichever comes first.” — manufacturer, nhmr.nl
Drive belts inspect / replace
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
500 hrs or 2 yrs
“Perform the following maintenance every 500 hours or 2 years of operation, whichever comes first. ... Adjusting or Repla” — manufacturer, nhmr.nl
Raw-water pump impeller
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
1,000 hrs or 4 yrs
“NOTICE: Replace the seawater pump impeller every 1000 hours even if no damage is apparent.” — manufacturer, nhmr.nl
Valve clearance check / adjust
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
1,000 hrs or 4 yrs
“Perform the following maintenance every 1000 hours or 4 years of operation, whichever comes first. ... Adjusting Intake” — manufacturer, nhmr.nl
Injector test / service
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
1,000 hrs or 4 yrs
“Perform the following maintenance every 1000 hours or 4 years of operation, whichever comes first. Checking the Fuel Inj” — manufacturer, nhmr.nl
Replace timing belt (dealer)
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
1,250 hrs or 5 yrs
“Perform the following maintenance procedures every 1250 hours of operation or 5 years, whichever comes first. ... Replac” — manufacturer, nhmr.nl
Heat exchanger & oil cooler cleaning
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
1,250 hrs or 5 yrs
“Perform the following maintenance procedures every 1250 hours of operation or 5 years, whichever comes first. Cleaning t” — manufacturer, nhmr.nl
Check battery electrolyte level
6LPA-STP2 / 6LPA-STZP2 (2007 Yanmar manual)
50 hrs or 1 mo
“perform the following procedures every 50 hours thereafter or monthly, whichever comes first. ... Checking Battery Elect” — manufacturer, nhmr.nl
Service part numbers (8)
Oil filter Yanmar 119770-90620-12
Replaces 119770-90620
“6LP(A) Basic Service Kit ... 119770-90620-12 1 OIL FILTER (12 PACK)” — dealer, oldportmarine.com · “Oil Filter: 119770-90620 , 119770-90620-01 ,119770-90620-12” — dealer, staycoolpumps.com
Fuel filter Yanmar 119773-55710-12
Replaces 119773-55710
“6LP(A) Basic Service Kit ... 119773-55710-12 1 FUEL FILTER (REV) 12” — dealer, oldportmarine.com · “Fuel Filter: 119773-55510 , 119773-55710 , 119773-55710-12” — dealer, staycoolpumps.com
Raw-water impeller Yanmar 119773-42600
“Impeller Kit: Impeller 119773-42600 , O-ring 119773-42570” — dealer, staycoolpumps.com · “Replacement Part Number: 119773-42600 ... Fit For Yanmar Engine: 6LP, 6LPA, 6LP(A)-DTE(P, 6LP(A)-STE(P” — dealer, fridayparts.com
Drive belt Yanmar 119775-77260 × 2
“119775-77260 Alternator belt. 2 required.” — dealer, oldportmarine.com · “It fits Yanmar 6LPA, 6LPA-STP, 6LPA-DTP, 6LPA-STP2 engines.” — dealer, deltadieselparts.com
Air filter Yanmar 119593-18880
“6LP(A) Basic Service Kit ... 119593-18880 1 FILTER, AIR 65MM” — dealer, oldportmarine.com · “Air Filter: 119593-18880” — dealer, staycoolpumps.com
Zinc / anode Yanmar 119574-44150 × 4
“6LP(A) Basic Service Kit ... 119574-44150 4 ZINC, ANTI-CORROSIVE” — dealer, oldportmarine.com · “(5) 119574-44150 (2) Heat Exchanger (2) Oil Cooler (1) Fuel Cooler. Some models may only use 4” — dealer, staycoolpumps.com
Zinc / anode Yanmar 119574-18790
“119574-18790 (1) Zinc” — dealer, oldportmarine.com · “Zinc Kit: 119773-92600 , (1) 119574-18790 Intercooler” — dealer, staycoolpumps.com
Thermostat Yanmar 119773-49550
“119773-49550 Thermostat / 119773-49570 Gasket” — dealer, oldportmarine.com · “It fits Yanmar 6LPA-STP, 6LPA-STP2, 6LPA-STZP, 6LPA engines.” — dealer, deltadieselparts.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.

Steering

Edson — Pedestal chain-and-wire steering parts: good

Edson (New Bedford, MA) still sells service parts: chain-and-wire kits, sprockets, idlers, pull-pull conduit steering and internal pedestal parts, and keeps steering data sheets by boat model, many decades old.

Parts sources: Edson Marine (service parts)

Common problems (3)
  • Old or slack steering wire steering
    Edson advises replacing steering wire about every five years, checking tension with the wheel locked, and inspecting under load annually; owners often find decades-old stiff wire.
    usna.edu · youtube.com
  • Lubrication and fastener checks steering
    Chain, wire, sheaves and pedestal bearings need regular oiling or greasing, and clevis/cotter pins and bolts should be checked monthly to avoid failures.
    usna.edu
  • Replacing engine control cables in the pedestal steering
    Swapping throttle/shift cables inside an Edson pedestal is a common owner job requiring removal of the wheel shaft sprocket pin.
    forums.sailboatowners.com

Edson — Traditional geared steerers (worm / rack-and-pinion) parts: good

Edson says its traditional wheels and geared steerers are still available, now built with modern materials; rack-and-pinion steerers are offered for transom-hung and inboard rudders.

Parts sources: Edson Marine (traditional steerers)

Model sources (9)

sailboatdata.com · goodoldboat.com · sailnet.com · goodoldboat.com · pearson323.com · pearson323.com · 82353.activeboard.com · southbaysail.com · pearsonyachts.org

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Other Pearson models

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