Custom Boat Manual

Models › Hunter

Hunter 34

Built 1983–1987 by Hunter Marine

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 Hunter 34

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

Hunter 34
Photo: Ahunt, CC0 via Wikimedia Commons · licence (names blurred)
Built
1983–1987
Builder
Hunter Marine
Designer
Cortland Steck
Length
34.42 ft
Waterline
28.25 ft
Beam
11.58 ft
Draft
5.5 ft
Displacement
11,820 lb
Ballast
5,000 lb
Hull
fiberglass
Hull / keel
fin keel
Rig
sloop
Propulsion
inboard
Fuel
25 gal
Water
65 gal
Holding
20 gal
Water heater
AC + engine · standard
Stern thruster
not fitted
Steering
pedestal cable · Yacht Specialties
Tank capacities — where the figures come from
  • Fuel 25 gal
    “25 gal” — spec database (1983-1987), hunter.sailboatowners.com · “a 25-gallon (95-litre) fuel tank” — search excerpt, sailboat-cruising.com · “Fuel tank 25 gl.” — owner's manual, sbo.sailboatowners.com · “Fuel tank: Gallons 25 / Liters 94.6” — brochure (1983), sbo.sailboatowners.com
    Builder's Hunter 34 plumbing diagram (owner's manual) and the 1983 'Introducing the Hunter 34' standard-equipment sheet both give 25 gal (94.6 L).
  • Water 65 gal
    “65 gal” — spec database (1983-1987), hunter.sailboatowners.com · “65 gallons (246 litres) of fresh water” — search excerpt, sailboat-cruising.com · “2 tanks for a total of 65gals (25 gal aft + 40 gal under port settee)” — search excerpt (1983-1984), forums.sailboatowners.com · “Water tank 30 gl. + water tank 35 gl.” — owner's manual, sbo.sailboatowners.com
    The builder's plumbing diagram shows two water tanks, 30 gal (aft) and 35 gal, 65 gal in total. Owners describe the split as 25 and 40, but the total agrees. The water figure on the 1983 equipment sheet is too faint to read reliably.
  • Holding 20 gal
    “Holding tank 20 gl.” — owner's manual, sbo.sailboatowners.com
    The builder's Hunter 34 plumbing diagram lists a 20-gal holding tank.
  • Water heater AC + engine · standard
    “Hot and cold pressure water system (Hunter 34 standard equipment)” — brochure (1983), sbo.sailboatowners.com · “The water heater operates either on 120 volts AC or when the engine is running” — owner's manual, sbo.sailboatowners.com · “Electric water heater (AC/DC diagram); 5/8" black hose from [engine] unit to water heater & back (plumbing diagram)” — owner's manual, sbo.sailboatowners.com
    Capacity not stated. The 1983 introduction brochure and standard-equipment sheet list hot and cold pressure water; the owner's manual and the Hunter 34 plumbing diagram show a 120 V heater also heated by an engine coolant loop.

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 1983 Hunter 34 standard-equipment list names no thruster, and no option list was found.
  • Stern thruster not fitted
    Our earlier figure of none has no source, and nothing was found either way.
  • Steering pedestal cable · Yacht Specialties
    “Pedestal steering, w/engine controls and lighted compass” — brochure (1983), sbo.sailboatowners.com · “Hunter TYPICAL STEERING SYSTEM ... Quadrant ... Idler Plate w/Sheaves ... Emergency Tiller Access” — owner's manual, sbo.sailboatowners.com · “Hunter 34 Steering ... Merriman / Yacht Specialties Pedestal Control Head” — owners' association, shop.hunterowners.com
    The Hunter 34 owner's manual has a typical steering system drawing: pedestal wheel, wire over an idler plate with sheaves to a rudder quadrant, and emergency tiller access through the lazarette. Pedestal steering is on the 1983 standard-equipment list. The Yacht Specialties brand comes only from the HunterOwners parts listing.

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

B&R rig (swept spreaders, no backstay). Fin keel with spade rudder, 5.5 ft; shoal keel 4.25 ft with about 220 lb more ballast. PS says 1985 boats carry about 450 lb more ballast than 1983 boats, and it calls the boat tender and prone to weather helm. Over 800 were built in just over three years (PS); replaced by the Legend 35. Tri-cabin layout. Galley was specified with a kerosene stove, later alcohol. PS says over 800 were built and calls it a single-skin (uncored) hull with a molded liner.

Engines fitted

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

Generator

No generator in the 1983 standard-equipment sheet, owner's manual or wiring/plumbing diagrams.

Manuals and brochures online

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

Known problems for this model

4 more
  • Liner traps stuffing-box water hull
    The first small Hunter with a molded hull liner; stuffing-box leaks can collect between hull and liner rather than draining to the bilge.
    practical-sailor.com
  • Early Yanmar vibration and raw-water cooling engine
    Some early Yanmars had vibration problems, and some lacked freshwater cooling. For salt water, confirm the engine is freshwater cooled.
    practical-sailor.com
  • Holding tank odor plumbing
    Owners report a smelly holding tank system that PS blames on porous hose and a poor vent design.
    practical-sailor.com
  • Hull-deck joint bolts not torqued other
    Owners reported QC problems: chafed hoses, bad system hookups and leaking ports and hatches. One found hull-deck joint bolts that had never been tightened.
    practical-sailor.com

Engines & parts

Yanmar 3GM / 3GM30F parts: good

Factory standard engine — you entered “Yanmar 3GMF (3GM, freshwater cooled)”

Very popular (used 3GM30Fs sell for $3,000+) and supported by a strong parts network. Cylinder head overhauls (valve seals, lapping, injector service) are a common, parts-supported repair.

Parts sources: Mack Boring & Parts (Yanmar distributor), HDI Marine (stainless exhaust elbows), Parts4Engines

Common problems (2)
  • Overheating at cruise rpm cooling
    The 3GM30F has a known overheating tendency linked to its heat exchanger; owners also trace it to coked elbows, worn impellers, scaled heat exchangers or air in the raw water circuit. Some heat exchangers were replaced under warranty.
    forums.sailboatowners.com
  • Mixing elbow corrosion exhaust
    OEM elbows corrode internally and should be inspected or replaced with stainless versions before they let water into the engine.
    practical-sailor.com · facebook.com
Maker’s service schedule (2)
Fuel filters & water separator250 hrs
“The normal replacement interval for the element is 250 hours ... Filter cleaning First time 50 hours Filter element repl” — manufacturer, c320.org
Air filter / intake silencer250 hrs
“Washing period Every 250 hours” — manufacturer, c320.org
Service part numbers (10)
Oil filter Yanmar 119305-35170
Replaces 119305-35151, 119660-35150
“3GM30F Basic Service Kit ... 119305-35170 1 FILTER ASSY, D68XL65” — dealer, oldportmarine.com · “Maintenance kit Yanmar 2GMF, 2GM20F, 3GMF, 3GM30F ... Yanmar 119305-35170 Oil Filter” — dealer, marinedustrie.com
Fuel filter Yanmar 104500-55710
“Fuel Filter Element 1 104500-55710 / Fuel Filter O-Ring 1 24341-000440” — dealer, ellebogen.com · “3GM30F Basic Service Kit ... 104500-55710 1 ELEMENT, FUEL FILTER” — dealer, oldportmarine.com
Raw-water impeller
Japan-built 3GM / 3GM30(F) (serial not starting with E)
Yanmar 124223-42092
“Impeller 1 124223-42092 / Impeller Gasket 1 124223-42110” — dealer, ellebogen.com · “3GM30F Basic Service Kit ... 124223-42092 1 IMPELLER, PUMP” — dealer, oldportmarine.com
Raw-water impeller
European-built GM-YEU (serial starting with E)
Yanmar 128990-42570
Replaces 128990-42200
“(Supersedes part number: 128990-42200) ... 3GM30-YEU, 3GM30C-YEU 3GM30F-YEU, 3GM30FC-YEU” — dealer, palmerpower.com · “It fits Yanmar 2GM20F, 2YM15, 3GM30F, 3GM30FC, 3TN30F, 3YM20, 3YM30, 3YM30AE engines. Cross Reference: 128990-42200” — dealer, deltadieselparts.com
Drive belt Yanmar 25132-003700
“Alternator Belt 1 25132-003700” — dealer, ellebogen.com · “3GM30F Basic Service Kit ... 25132-003700 1 V-BELT, A37” — dealer, oldportmarine.com
Drive belt Yanmar 104511-78780
“S/W Pump Belt 1 104511-78780” — dealer, ellebogen.com · “3GM30F Basic Service Kit ... 104511-78780 1 V-BELT, M/19” — dealer, oldportmarine.com
Air filter Yanmar 128270-12540
“Air Filter Element 1 128270-12540” — dealer, ellebogen.com · “3GM30F Basic Service Kit ... 128270-12540 1 ELEMENT, AIR CLEANER” — dealer, oldportmarine.com
Zinc / anode
raw-water 3GM / 3GM30; also sold for the F (heat-exchanger) versions
Yanmar 27210-200300
“27210-200300 Yanmar Engine Zinc Anode For 2GM(D), 3GM(D), 2GM20, 3GM30” — dealer, zincsforboats.com · “It fits Yanmar 2GM, 2GM20F, 2GM15, 2GM20, 3GM30F, 3GMF, 3HMF, 3GM30H engines.” — dealer, deltadieselparts.com
Thermostat
3GM30F / 3GMF (fresh-water cooled)
Yanmar 121750-49800
“Thermostat 1 121750-49800 / Thermostat Gasket 1 129350-49541” — dealer, ellebogen.com · “Thermostat for Yanmar 2GMF, 3GMF, 3HMF, 2GM20F, 3GM30F, 3HM35F / REC121750-49800” — dealer, marineparts.eu
Thermostat
3GM / 3GM30 (raw-water cooled)
Yanmar 105582-49200
“Replaces Yanmar Marine 105582-49200 ... 1GM, 2GM, 3GM, 1GM10, 2GM20, 3GM30” — dealer, repowermarine.com · “1GM10, 2GM20 & 3GM30 Thermostat to fit raw water cooled engine versions ... equivalent to 105582-49200” — dealer, parts4engines.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 (8)

sailboatdata.com · practical-sailor.com · cruisersforum.com · forums.sailboatowners.com · en.wikipedia.org · hunter.sailboatowners.com · sbo.sailboatowners.com · shop.hunterowners.com

Own a Hunter 34? Add her to your boats, then share a photo — names, numbers and faces are blurred before it appears.

Other Hunter models

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