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Catalina 34

Built 1985–? by Catalina Yachts

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About the Catalina 34

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

Catalina 34
Photo: Ahunt, CC0 via Wikimedia Commons · licence (names blurred)
Built
1985–?
Builder
Catalina Yachts
Designer
Frank Butler
Length
34.5 ft
Waterline
29.83 ft
Beam
11.75 ft
Draft
5.58 ft
Displacement
11,950 lb
Ballast
5,000 lb
Hull / keel
fin keel
Rig
sloop
Propulsion
inboard
Fuel
25 gal
Water
67 gal
Holding
18 gal
Water heater
6 gal · AC + engine · standard
Bow thruster
not fitted
Stern thruster
not fitted
Steering
pedestal cable · Edson
Tank capacities — where the figures come from
  • Fuel 25 gal
    “Fuel: 25 Gal. (95 lt.)” — owner's manual (Mk II (spec rev 3/7/03)), c34.org · “25 gal on it's data plate” — search excerpt (1988 (Mk I)), c34.org · “Fuel: 25 Gallons” — search excerpt (2001 Mk II), au.yachtworld.com · “Fuel: 25g” — search excerpt (2005 Mk II), yachtworld.com · “Fuel Tanks: 1 (23 Gallons)” — search excerpt (1989), sailboatlistings.com
    The builder's Mk II owner's manual specification sheet (rev 3/7/03) gives 25 gal. An owner on the C34 association forum reports a 25-gal tank data plate on a 1988 Mk I, and Mk II listings agree; one 1989 listing says 23.
  • Water 67 gal
    “Water: Fwd. 25 Gal. (95 lt.), Aft. 42 Gal. (159 lt.)” — owner's manual (Mk II (spec rev 3/7/03)), c34.org · “Total Water: 73 Gal. (276 lt.)” — owner's manual (Mk II (includes 6 gal water heater)), c34.org · “(75 Gallons)” — search excerpt (1989), sailboatlistings.com
    The builder's Mk II manual gives forward 25 + aft 42 = 67 gal in tanks; its 73-gal total also counts the 6-gal water heater. Mk I tankage isn't confirmed by a builder source (one 1989 listing says 75).
  • Holding 18 gal
    “Holding Tank: 18 Gal. (68 lt.)” — owner's manual (Mk II (spec rev 3/7/03)), c34.org · “Holding Tanks: 1 (25 Gallons)” — search excerpt (1989), sailboatlistings.com
    18 gal, from the specification sheet in the builder's Mk II owner's manual; a 1989 listing says 25, and no original document confirms the Mk I size. The 11/10/85 price list made a marine head with holding tank, macerator pump and deck discharge a $495 option, standard by Oct 1989, so some early Mk I boats may have left without a holding tank.
  • Water heater 6 gal · AC + engine · standard
    “Heater, Electric & Engine heat Exchanger: 6 Gal. (22.7 lt.) ... Total Water: 73 Gal.” — owner's manual (2003 (Mk II spec sheet rev 3/7/03)), c34.org · “I have an '87 Catalina 34'. I want to replace the original water heater (electric/heat exchanger).” — search excerpt (1987), forums.sailboatowners.com · “Hot and Cold Pressure Water System w/Shower in Head (standard equipment)” — builder (1985 (price list 11/10/85)), c34.org · “Hot and Cold Pressure System w/Shower in Head w/Two Tanks (standard equipment)” — brochure (1989 (dealer sheet, Oct 89)), c34.org · “Hot & Cold Pressure System in Galley and Head with Shower (standard equipment)” — builder (2003 (effective 12.16.02)), c34.org · “virtually instantaneous engine-created hot water” — review (1985 (SAIL, Dec 1985)), c34.org
    Hot and cold pressure water is standard on Catalina's 1985 and 2003 order forms and on a 1989 dealer sheet of standard equipment, so the heater came with the boat; SAIL's Dec 1985 review mentions engine-heated water. The builder's Mk II specification gives 6 gal, electric plus engine heat exchanger, within the 73 gal water total (25 + 42 + 6).

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 not fitted
    “Suggested price list and order form 11/10/85: full standard equipment and options lists, no thruster” — builder (1985), c34.org · “Catalina 34mkII equipment list and order form effective 12.16.02: standard equipment and options, no thruster” — builder (2002-2003), c34.org
    No bow thruster in the 1985 or 2002-03 builder standard/option lists, nor in the Oct 1989 dealer copy of the standard list.
  • Stern thruster not fitted
    “Suggested price list and order form 11/10/85: full standard equipment and options lists, no thruster” — builder (1985), c34.org · “Catalina 34mkII equipment list and order form effective 12.16.02: standard equipment and options, no thruster” — builder (2002-2003), c34.org
  • Steering pedestal cable · Edson
    “Pedestal Steering, Compass, Brake Guard and Engine Controls (standard equipment)” — builder (1985), c34.org · “40" Destroyer Wheel with Stainless Steel Pedestal Guard; Pedestal Steering, Brake, Engine Controls (standard)” — builder (2002-2003), c34.org · “The emergency steering tiller moves the whole steering, including cables and quadrant ... See the two (2) pages supplied” — owner's manual (1991-2002), c34.org
    Pedestal wheel steering is standard from 1985, and the Mk II builder manual confirms cable-and-quadrant Edson pedestal steering. The Mk II wheel is 40 inches according to the 2002-03 list.

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

Sources disagree on number built — left blank rather than guessed.

Deck is plywood-cored (not balsa) per Practical Sailor. 1985–86: deck-stepped mast, Universal 25 (21 hp); 1987–90: keel-stepped mast, Universal 25XP (23 hp); 1990–91: walk-through transom, Universal M35 (30 hp). Standard (5.58 ft) and shoal (4.67 ft) keels, wing keel (4.25 ft) from about 1990; tall rig available. Mark II has a larger cockpit. Later boats got a longer rudder to cure weather helm. Owners association: M-35 option 1990–94, then M-35XP, then M-35B (35 hp) in the Mark II; Mark II launched at hull #1295 (1995); builder history dates the Mark II introduction to February 1996. Original brochure confirms 11,950 lb, 5,000 lb ballast, 5 ft 7 in draft. Hull construction (solid vs cored) not stated in sources read; deck is plywood-cored.

Engines fitted

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

Generator

No generator is offered as standard or option on the 1985, 1989 or 2003 price/order sheets, and none appears in the Mk II owner's manual contents or specification sheet.

Manuals and brochures online

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

Known problems for this model

Engines & parts

Universal M-25 / M-25XP / M-25XPB parts: good

Factory standard engine — you entered “Universal M-25”

Marinized Kubota blocks with plenty of parts support: the M-25 is based on the Kubota D850 and the M-25XP on the Kubota D950 (B7200 tractor engine), so many internal parts can be bought through Kubota/tractor channels for far less than marine prices. Kubota dealers need the block model/serial, which is often painted over, so cross-referencing can be hit or miss. Some marine parts (e.g., gear case cover) are no longer made.

Parts sources: Westerbeke / Universal (factory parts store), Kubota USA parts lookup

Common problems (2)
  • Discontinued marine parts and Kubota cross-reference engine
    Owners struggle to cross Universal part numbers to Kubota numbers and find certain covers and marine-specific parts discontinued.
    forums.sailboatowners.com · ericsonyachts.org
  • Repower fit questions engine
    Owners of older Catalina 30s ask whether an M-25XP drops in; it generally fits but couplers and mounts may differ.
    facebook.com
Maker’s service schedule (36)
Engine oil & filter change
M-25 / M-25XP (owner manual 200157)
75 hrs or 1 yr
“Every 75 hours. At least once each season, or whichever comes first change engine oil and oil filter.” — manufacturer, c34.org
Fuel filters & water separator
M-25 / M-25XP (owner manual 200157)
100 hrs or 1 yr
“Every 100 hours. ... At least once each year, or whichever comes first change fuel oil filter and transmission oil.” — manufacturer, c34.org
Drive belts inspect / replace
M-25 / M-25XP (owner manual 200157)
100 hrs or 1 mo
“Every 100 hours. Or monthly, check V-belt tension. 1/2" deflection.” — manufacturer, c34.org
Raw-water pump impeller
M-25 / M-25XP (owner manual 200157)
1 yr
“Remove front cover of pump if system was drained for storage. Inspect rubber impeller, lightly lubricate pump impeller” — manufacturer, c34.org
Turn raw-water pump grease cup 1/2 turn
M-25 / M-25XP (owner manual 200157)
30 hrs
“Be sure water pump is lubricated by turning grease cup (if provided on your engine) clockwise 1/2 turn at 30 hour interv” — manufacturer, c34.org
Check mounts, cables, ground and fuel/water lines
M-25 / M-25XP (owner manual 200157)
100 hrs
“Check engine mounts bolts and lock nuts for looseness, and rubber for wear. ... Check all fuel and water lines for tight” — manufacturer, c34.org
Check engine/shaft alignment
M-25 / M-25XP (owner manual 200157)
1 yr
“Check engine and shaft alignment annually or if vibration is noticed during engine powering.” — manufacturer, c34.org
Engine oil & filter change
M-25XPA / M-25XPA(C) (A-series, manual 200494)
250 hrs or 1 yr
“Initial engine oil and filter change at 50 hours, then change both every 250 hours.” — manufacturer, c34.org
Fuel filters & water separator
M-25XPA / M-25XPA(C) (A-series, manual 200494)
250 hrs or 1 yr
“Initial change, then every 250 hours or once a year.” — manufacturer, c34.org
Transmission fluid change
M-25XPA / M-25XPA(C) (A-series, manual 200494)
300 hrs or 1 yr
“Initial change, then at 300 hours or once a season.” — manufacturer, c34.org
Exhaust mixing elbow inspection
M-25XPA / M-25XPA(C) (A-series, manual 200494)
250 hrs or 1 yr
“Initial check at 50 hours, then every 250 hours or once a year.” — manufacturer, c34.org
Engine pencil zincs
M-25XPA / M-25XPA(C) (A-series, manual 200494)
100 hrs or 1 yr
“EVERY 100 OPERATING HOURS OR YEARLY ... Inspect and clean zinc anode. Note the condition, then determine your own schedu” — manufacturer, c34.org
Drive belts inspect / replace
M-25XPA / M-25XPA(C) (A-series, manual 200494)
50 hrs or 1 mo
“EVERY 50 OPERATING HOURS OR MONTHLY ... Drive Belts: Inspect for proper tension” — manufacturer, c34.org
Raw-water pump impeller
M-25XPA / M-25XPA(C) (A-series, manual 200494)
50 hrs or 1 mo
“EVERY 50 OPERATING HOURS OR MONTHLY ... Raw Water Pump: Inspect impeller, check drive shaft security.” — manufacturer, c34.org
Air filter / intake silencer
M-25XPA / M-25XPA(C) (A-series, manual 200494)
100 hrs or 1 yr
“EVERY 100 OPERATING HOURS OR YEARLY ... Air Intake Filter: Remove and clean filter, replace if contaminated.” — manufacturer, c34.org
Coolant replacement & freeze-point test
M-25XPA / M-25XPA(C) (A-series, manual 200494)
500 hrs or 5 yrs
“EVERY 500 OPERATING HOURS OR FIVE YEARS ... Coolant System: Drain, flush and re-fill the cooling system” — manufacturer, c34.org
Valve clearance check / adjust
M-25XPA / M-25XPA(C) (A-series, manual 200494)
500 hrs or 5 yrs
“EVERY 500 OPERATING HOURS OR FIVE YEARS ... *Valve Clearances: Adjust valves.” — manufacturer, c34.org
Injector test / service
M-25XPA / M-25XPA(C) (A-series, manual 200494)
500 hrs or 5 yrs
“EVERY 500 OPERATING HOURS OR FIVE YEARS ... *Fuel Injectors: Check and adjust injection opening pressure and spray condi” — manufacturer, c34.org
Heat exchanger & oil cooler cleaning
M-25XPA / M-25XPA(C) (A-series, manual 200494)
1,000 hrs or 5 yrs
“EVERY 1000 OPERATING HOURS OR EVERY FIVE YEARS ... *Heat Exchanger: Remove the heat exchanger for professional cleaning” — manufacturer, c34.org
Clean glow plugs / check preheat
M-25XPA / M-25XPA(C) (A-series, manual 200494)
500 hrs or 5 yrs
“*Preheat Circuit: Check operation of the pre-heat. Remove and clean the glow plugs.” — manufacturer, c34.org
Check engine/shaft alignment
M-25XPA / M-25XPA(C) (A-series, manual 200494)
500 hrs or 5 yrs
“*Engine/Shaft Alignment: Check security of the shaft coupling and check shaft alignment.” — manufacturer, c34.org
Inspect transmission damper plate
M-25XPA / M-25XPA(C) (A-series, manual 200494)
1,000 hrs or 5 yrs
“*Transmission Damper Plate: Inspect the damper plate, replace if necessary” — manufacturer, c34.org
Fuel filters & water separator
M-25XPB / M-25XPB(C) (B-series, manual 200550)
250 hrs or 1 yr
“Initial change, then every 250 hours or once a year.” — manufacturer (rev 3, Aug 2015), c34.org
Transmission fluid change
M-25XPB / M-25XPB(C) (B-series, manual 200550)
300 hrs or 1 yr
“Initial change, then at 300 hours or once a season.” — manufacturer (rev 3, Aug 2015), c34.org
Exhaust mixing elbow inspection
M-25XPB / M-25XPB(C) (B-series, manual 200550)
250 hrs or 1 yr
“Initial check at 50 hours, then every 250 hours or once a year.” — manufacturer (rev 3, Aug 2015), c34.org
Engine pencil zincs
M-25XPB / M-25XPB(C) (B-series, manual 200550)
50 hrs or 1 mo
“EVERY 50 OPERATING HOURS OR MONTHLY ... Zinc Anode: Inspect and clean zinc anode. Replace if necessary.” — manufacturer (rev 3, Aug 2015), c34.org
Drive belts inspect / replace
M-25XPB / M-25XPB(C) (B-series, manual 200550)
50 hrs or 1 mo
“EVERY 50 OPERATING HOURS OR MONTHLY ... Drive Belt: Inspect for proper tension” — manufacturer (rev 3, Aug 2015), c34.org
Raw-water pump impeller
M-25XPB / M-25XPB(C) (B-series, manual 200550)
100 hrs or 1 yr
“EVERY 100 OPERATING HOURS OR YEARLY ... Raw Water Pump: Inspect impeller, check drive shaft security.” — manufacturer (rev 3, Aug 2015), c34.org
Air filter / intake silencer
M-25XPB / M-25XPB(C) (B-series, manual 200550)
100 hrs or 1 yr
“EVERY 100 OPERATING HOURS OR YEARLY ... Air Intake Filter: Inspect, clean and replace as needed.” — manufacturer (rev 3, Aug 2015), c34.org
Coolant replacement & freeze-point test
M-25XPB / M-25XPB(C) (B-series, manual 200550)
500 hrs or 1 yr
“EVERY 500 OPERATING HOURS OR YEARLY ... Coolant System: Drain, flush and re-fill the cooling system” — manufacturer (rev 3, Aug 2015), c34.org
Valve clearance check / adjust
M-25XPB / M-25XPB(C) (B-series, manual 200550)
500 hrs or 1 yr
“EVERY 500 OPERATING HOURS OR YEARLY ... *Valve Clearances: Adjust valves.” — manufacturer (rev 3, Aug 2015), c34.org
Injector test / service
M-25XPB / M-25XPB(C) (B-series, manual 200550)
500 hrs or 1 yr
“*Fuel Injectors: Check and adjust injection opening pressure and spray conditions.” — manufacturer (rev 3, Aug 2015), c34.org
Heat exchanger & oil cooler cleaning
M-25XPB / M-25XPB(C) (B-series, manual 200550)
1,000 hrs or 5 yrs
“EVERY 1000 OPERATING HOURS OR OR EVERY FIVE YEARS ... *Heat Exchanger: Remove the heat exchanger for professional cleani” — manufacturer (rev 3, Aug 2015), c34.org
Clean glow plugs / check preheat
M-25XPB / M-25XPB(C) (B-series, manual 200550)
500 hrs or 1 yr
“*Preheat Circuit: Check operation of the pre-heat. Remove and clean the glow plugs.” — manufacturer (rev 3, Aug 2015), c34.org
Check engine/shaft alignment
M-25XPB / M-25XPB(C) (B-series, manual 200550)
500 hrs or 1 yr
“Engine/Shaft Alignment: Check security of the shaft coupling and check shaft alignment.” — manufacturer (rev 3, Aug 2015), c34.org
Inspect transmission damper plate
M-25XPB / M-25XPB(C) (B-series, manual 200550)
1,000 hrs or 5 yrs
“*Transmission Damper Plate: Inspect the damper plate, replace if necessary” — manufacturer (rev 3, Aug 2015), c34.org
Service part numbers (19)
Oil filter Universal 300209
“Filter, Lube Oil - 300209” — manufacturer, westerbeke.com · “300209 FILTER,OIL” — manufacturer, hansenmarine.com
Fuel filter Universal 298854
“Filter, Fuel Oil - 298854” — manufacturer, westerbeke.com · “298854 FILTER,FUEL” — manufacturer, hansenmarine.com
Electric fuel lift pump filter (with gasket) Universal 300128
“Filter, Electric Lift - 300128” — manufacturer, westerbeke.com · “300128 FILTER,FUEL WITH GASKET” — manufacturer, hansenmarine.com
Optional primary fuel filter / water separator (Westerbeke accessory) Universal 032974
“5 032974 FILTER PRIMARY FUEL SEPERATOR 1” — manufacturer, westerbeke.com
Raw-water impeller
New-style Sherwood sea water pump 302648 (M-25 / M-25XP)
 Universal 302875
“Pump, Impeller - 302875” — manufacturer, westerbeke.com · “302875 IMPELLER,PUMP 302648” — manufacturer, hansenmarine.com
Raw-water impeller
Old Sherwood sea water pump 300986 (M-25)
 Universal 287439
“5 287439 1 Impeller” — manufacturer, westerbeke.com
Raw-water impeller
Oberdorfer sea water pump 301357 (M-25)
 Universal 295628
“5 295628 1 Impeller” — manufacturer, westerbeke.com · “295628 IMPELLER,PUMP 301357” — manufacturer, hansenmarine.com
Raw-water impeller
Impeller kit, raw water pump 042175 (M-25XPB); price book says it also fits pump 302648
 Universal 200175
“6 200175 IMPELLER KIT INCLUDES REF #'S 5,6 & 8 1” — manufacturer, westerbeke.com · “200175 IMPELLER KIT 302648 - 42175 PUMP” — manufacturer, hansenmarine.com
Raw-water pump kit
Raw water pump 042175 (M-25XPB); price book says it also fits pump 302648
 Universal 200176
“30 200176 PUMP KIT REBUILD 1” — manufacturer, westerbeke.com · “200176 KIT,WATER PUMP 302648 - 42175” — manufacturer, hansenmarine.com
Drive belt
M-25 (5421 / M-25, 1978-1986)
 Universal 300805
“Belt - 300805” — manufacturer, westerbeke.com · “300805 BELT,FAN 41.6 x O” — manufacturer, hansenmarine.com
Drive belt
M-25XP
 Universal 300817
“Belt - 300817” — manufacturer, westerbeke.com
Drive belt
M-25 fitted with the alternator mount conversion kit
 Universal 302190
“16 302190 1 V-Belt M25” — manufacturer, westerbeke.com · “302190 BELT,FAN 39.6 x O” — manufacturer, hansenmarine.com
Drive belt
M-25XPB
 Universal 030475
“9 030475 BELT FAN, 39.5 X0 1” — manufacturer, westerbeke.com · “30475 BELT,FAN 39.5 x O” — manufacturer, hansenmarine.com
Air filter Universal 301049
“Air Filter Element - 301049” — manufacturer, westerbeke.com
Zinc / anode
M-25 / M-25XP with 2-inch diameter heat exchanger
 Universal 301069
“Zinc - 301069 (I) ... 301069 ZINC IS USED ON 2" DIAMETER HEAT EXCHANGERS.” — manufacturer, westerbeke.com
Zinc / anode
M-25XP with 3-inch diameter heat exchanger
 Universal 301068
“301069 FOR 2" DIAMETER EXCHANGER OR 301068 FOR 3" DIAMETER EXCHANGER.” — manufacturer, westerbeke.com · “301068 ZINC 3/8NPT x 1-1/4” — manufacturer, hansenmarine.com
Zinc / anode
M-25XPB
 Universal 011885
“17 011885 ZINC 1” — manufacturer, westerbeke.com · “Westerbeke 011885 Zinc anode” — dealer, westerbeke.com.au
Thermostat
M-25, M-25XP, and M-25XPB to March 1998 (38 mm OD)
 Universal 301358
“Thermostat Element - 301358 (H) ... THERMOSTAT IS 160 deg.” — manufacturer, westerbeke.com
Thermostat
M-25XPB from March 1998 (44 mm OD)
 Universal 201001
“13-2 201001 THERMOSTAT 160F - 44 MM OD FROM MAR 1998 1” — manufacturer, westerbeke.com · “201001 THERMOSTAT 160F” — manufacturer, hansenmarine.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.

Universal M-35 / M-35B parts: limited

Factory optional engine — you entered “Universal M-35 / M-35XP”

Kubota-based like other M-series; Westerbeke still lists some M-35B parts, but owners of early-1980s M-35s ask about parts availability.

Parts sources: Westerbeke / Universal (factory parts store)

Maker’s service schedule (36)
Engine oil & filter change
M-35 (owner manual 200157)
75 hrs or 1 yr
“Every 75 hours. At least once each season, or whichever comes first change engine oil and oil filter.” — manufacturer, c34.org
Fuel filters & water separator
M-35 (owner manual 200157)
100 hrs or 1 yr
“Every 100 hours. ... At least once each year, or whichever comes first change fuel oil filter and transmission oil.” — manufacturer, c34.org
Drive belts inspect / replace
M-35 (owner manual 200157)
100 hrs or 1 mo
“Every 100 hours. Or monthly, check V-belt tension. 1/2" deflection.” — manufacturer, c34.org
Raw-water pump impeller
M-35 (owner manual 200157)
1 yr
“Remove front cover of pump if system was drained for storage. Inspect rubber impeller, lightly lubricate pump impeller” — manufacturer, c34.org
Turn raw-water pump grease cup 1/2 turn
M-35 (owner manual 200157)
30 hrs
“Be sure water pump is lubricated by turning grease cup (if provided on your engine) clockwise 1/2 turn at 30 hour interv” — manufacturer, c34.org
Check mounts, cables, ground and fuel/water lines
M-35 (owner manual 200157)
100 hrs
“Check engine mounts bolts and lock nuts for looseness, and rubber for wear. ... Check all fuel and water lines for tight” — manufacturer, c34.org
Check engine/shaft alignment
M-35 (owner manual 200157)
1 yr
“Check engine and shaft alignment annually or if vibration is noticed during engine powering.” — manufacturer, c34.org
Engine oil & filter change
M-35A / M-35A(C) (A-series, manual 200494)
250 hrs or 1 yr
“Initial engine oil and filter change at 50 hours, then change both every 250 hours.” — manufacturer, c34.org
Fuel filters & water separator
M-35A / M-35A(C) (A-series, manual 200494)
250 hrs or 1 yr
“Initial change, then every 250 hours or once a year.” — manufacturer, c34.org
Transmission fluid change
M-35A / M-35A(C) (A-series, manual 200494)
300 hrs or 1 yr
“Initial change, then at 300 hours or once a season.” — manufacturer, c34.org
Exhaust mixing elbow inspection
M-35A / M-35A(C) (A-series, manual 200494)
250 hrs or 1 yr
“Initial check at 50 hours, then every 250 hours or once a year.” — manufacturer, c34.org
Engine pencil zincs
M-35A / M-35A(C) (A-series, manual 200494)
100 hrs or 1 yr
“EVERY 100 OPERATING HOURS OR YEARLY ... Inspect and clean zinc anode. Note the condition, then determine your own schedu” — manufacturer, c34.org
Drive belts inspect / replace
M-35A / M-35A(C) (A-series, manual 200494)
50 hrs or 1 mo
“EVERY 50 OPERATING HOURS OR MONTHLY ... Drive Belts: Inspect for proper tension” — manufacturer, c34.org
Raw-water pump impeller
M-35A / M-35A(C) (A-series, manual 200494)
50 hrs or 1 mo
“EVERY 50 OPERATING HOURS OR MONTHLY ... Raw Water Pump: Inspect impeller, check drive shaft security.” — manufacturer, c34.org
Air filter / intake silencer
M-35A / M-35A(C) (A-series, manual 200494)
100 hrs or 1 yr
“EVERY 100 OPERATING HOURS OR YEARLY ... Air Intake Filter: Remove and clean filter, replace if contaminated.” — manufacturer, c34.org
Coolant replacement & freeze-point test
M-35A / M-35A(C) (A-series, manual 200494)
500 hrs or 5 yrs
“EVERY 500 OPERATING HOURS OR FIVE YEARS ... Coolant System: Drain, flush and re-fill the cooling system” — manufacturer, c34.org
Valve clearance check / adjust
M-35A / M-35A(C) (A-series, manual 200494)
500 hrs or 5 yrs
“EVERY 500 OPERATING HOURS OR FIVE YEARS ... *Valve Clearances: Adjust valves.” — manufacturer, c34.org
Injector test / service
M-35A / M-35A(C) (A-series, manual 200494)
500 hrs or 5 yrs
“EVERY 500 OPERATING HOURS OR FIVE YEARS ... *Fuel Injectors: Check and adjust injection opening pressure and spray condi” — manufacturer, c34.org
Heat exchanger & oil cooler cleaning
M-35A / M-35A(C) (A-series, manual 200494)
1,000 hrs or 5 yrs
“EVERY 1000 OPERATING HOURS OR EVERY FIVE YEARS ... *Heat Exchanger: Remove the heat exchanger for professional cleaning” — manufacturer, c34.org
Clean glow plugs / check preheat
M-35A / M-35A(C) (A-series, manual 200494)
500 hrs or 5 yrs
“*Preheat Circuit: Check operation of the pre-heat. Remove and clean the glow plugs.” — manufacturer, c34.org
Check engine/shaft alignment
M-35A / M-35A(C) (A-series, manual 200494)
500 hrs or 5 yrs
“*Engine/Shaft Alignment: Check security of the shaft coupling and check shaft alignment.” — manufacturer, c34.org
Inspect transmission damper plate
M-35A / M-35A(C) (A-series, manual 200494)
1,000 hrs or 5 yrs
“*Transmission Damper Plate: Inspect the damper plate, replace if necessary” — manufacturer, c34.org
Fuel filters & water separator
M-35B / M-35B(C) (B-series, manual 200550)
250 hrs or 1 yr
“Initial change, then every 250 hours or once a year.” — manufacturer (rev 3, Aug 2015), c34.org
Transmission fluid change
M-35B / M-35B(C) (B-series, manual 200550)
300 hrs or 1 yr
“Initial change, then at 300 hours or once a season.” — manufacturer (rev 3, Aug 2015), c34.org
Exhaust mixing elbow inspection
M-35B / M-35B(C) (B-series, manual 200550)
250 hrs or 1 yr
“Initial check at 50 hours, then every 250 hours or once a year.” — manufacturer (rev 3, Aug 2015), c34.org
Engine pencil zincs
M-35B / M-35B(C) (B-series, manual 200550)
50 hrs or 1 mo
“EVERY 50 OPERATING HOURS OR MONTHLY ... Zinc Anode: Inspect and clean zinc anode. Replace if necessary.” — manufacturer (rev 3, Aug 2015), c34.org
Drive belts inspect / replace
M-35B / M-35B(C) (B-series, manual 200550)
50 hrs or 1 mo
“EVERY 50 OPERATING HOURS OR MONTHLY ... Drive Belt: Inspect for proper tension” — manufacturer (rev 3, Aug 2015), c34.org
Raw-water pump impeller
M-35B / M-35B(C) (B-series, manual 200550)
100 hrs or 1 yr
“EVERY 100 OPERATING HOURS OR YEARLY ... Raw Water Pump: Inspect impeller, check drive shaft security.” — manufacturer (rev 3, Aug 2015), c34.org
Air filter / intake silencer
M-35B / M-35B(C) (B-series, manual 200550)
100 hrs or 1 yr
“EVERY 100 OPERATING HOURS OR YEARLY ... Air Intake Filter: Inspect, clean and replace as needed.” — manufacturer (rev 3, Aug 2015), c34.org
Coolant replacement & freeze-point test
M-35B / M-35B(C) (B-series, manual 200550)
500 hrs or 1 yr
“EVERY 500 OPERATING HOURS OR YEARLY ... Coolant System: Drain, flush and re-fill the cooling system” — manufacturer (rev 3, Aug 2015), c34.org
Valve clearance check / adjust
M-35B / M-35B(C) (B-series, manual 200550)
500 hrs or 1 yr
“EVERY 500 OPERATING HOURS OR YEARLY ... *Valve Clearances: Adjust valves.” — manufacturer (rev 3, Aug 2015), c34.org
Injector test / service
M-35B / M-35B(C) (B-series, manual 200550)
500 hrs or 1 yr
“*Fuel Injectors: Check and adjust injection opening pressure and spray conditions.” — manufacturer (rev 3, Aug 2015), c34.org
Heat exchanger & oil cooler cleaning
M-35B / M-35B(C) (B-series, manual 200550)
1,000 hrs or 5 yrs
“EVERY 1000 OPERATING HOURS OR OR EVERY FIVE YEARS ... *Heat Exchanger: Remove the heat exchanger for professional cleani” — manufacturer (rev 3, Aug 2015), c34.org
Clean glow plugs / check preheat
M-35B / M-35B(C) (B-series, manual 200550)
500 hrs or 1 yr
“*Preheat Circuit: Check operation of the pre-heat. Remove and clean the glow plugs.” — manufacturer (rev 3, Aug 2015), c34.org
Check engine/shaft alignment
M-35B / M-35B(C) (B-series, manual 200550)
500 hrs or 1 yr
“Engine/Shaft Alignment: Check security of the shaft coupling and check shaft alignment.” — manufacturer (rev 3, Aug 2015), c34.org
Inspect transmission damper plate
M-35B / M-35B(C) (B-series, manual 200550)
1,000 hrs or 5 yrs
“*Transmission Damper Plate: Inspect the damper plate, replace if necessary” — manufacturer (rev 3, Aug 2015), c34.org
Service part numbers (16)
Oil filter Universal 300209
“Filter, Lube Oil - 300209” — manufacturer, westerbeke.com · “300209 FILTER,OIL” — manufacturer, hansenmarine.com
Fuel filter Universal 298854
“Filter, Fuel Oil - 298854” — manufacturer, westerbeke.com · “298854 FILTER,FUEL” — manufacturer, hansenmarine.com
Electric fuel lift pump filter Universal 300128
“Filter, Electric Lift - 300128” — manufacturer, westerbeke.com · “300128 FILTER,FUEL WITH GASKET” — manufacturer, hansenmarine.com
Optional primary fuel filter / water separator (Westerbeke accessory) Universal 032974
“5 032974 FILTER PRIMARY FUEL SEPERATOR 1” — manufacturer, westerbeke.com
Raw-water impeller
Sherwood sea water pump 302648 (M-35)
 Universal 302875
“Pump, Impeller - 302875” — manufacturer, westerbeke.com · “302875 IMPELLER,PUMP 302648” — manufacturer, hansenmarine.com
Raw-water impeller
Old Johnson sea water pump 302259 (M-35)
 Universal 302571
“4 302571 1 Impeller” — manufacturer, westerbeke.com
Raw-water impeller
Impeller kit, raw water pump 042175 (M-35B); price book says it also fits pump 302648
 Universal 200175
“6 200175 IMPELLER KIT INCLUDES REF #'S 5,6 & 8 1” — manufacturer, westerbeke.com · “200175 IMPELLER KIT 302648 - 42175 PUMP” — manufacturer, hansenmarine.com
Raw-water pump kit
Old Johnson sea water pump 302259 (M-35)
 Universal 302314
“16 302314 1 Service Kit” — manufacturer, westerbeke.com
Raw-water pump kit
Raw water pump 042175 (M-35B); price book says it also fits pump 302648
 Universal 200176
“30 200176 PUMP KIT REBUILD 1” — manufacturer, westerbeke.com · “200176 KIT,WATER PUMP 302648 - 42175” — manufacturer, hansenmarine.com
Drive belt
M-35
 Universal 300817
“Belt - 300817” — manufacturer, westerbeke.com · “300817 BELT,COG 40.0 x O” — manufacturer, hansenmarine.com
Drive belt
M-35B
 Universal 030475
“9 030475 BELT FAN, 39.5 X0 1” — manufacturer, westerbeke.com · “30475 BELT,FAN 39.5 x O” — manufacturer, hansenmarine.com
Air filter Universal 301049
“Air Filter Element - 301049” — manufacturer, westerbeke.com
Zinc / anode
M-35 (3-inch diameter heat exchanger)
 Universal 301068
“Zinc - 301068 (E) ... 301068 FOR 3" DIAMETER EXCHANGER - 3/8 NPT X 1-1/2 X 1/2 DIAMETER.” — manufacturer, westerbeke.com · “301068 ZINC 3/8NPT x 1-1/4” — manufacturer, hansenmarine.com
Zinc / anode
M-35B
 Universal 011885
“17 011885 ZINC 1” — manufacturer, westerbeke.com · “Westerbeke 011885 Zinc anode” — dealer, westerbeke.com.au
Thermostat
M-35, and M-35B to March 1998 (38 mm OD)
 Universal 301358
“Thermostat Element - 301358” — manufacturer, westerbeke.com
Thermostat
M-35B from March 1998 (44 mm OD)
 Universal 201001
“13-2 201001 THERMOSTAT 160F - 44 MM OD FROM MAR 1998 1” — manufacturer, westerbeke.com · “201001 THERMOSTAT 160F” — manufacturer, hansenmarine.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 (13)

sailboatdata.com · practical-sailor.com · catalinadirect.com · c34.org · catalinayachts.com · catalinayachts.com · catalinayachts.com · listingsport.com · c34.org · c34.org · c34.org · c34.org · c34.org

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Other Catalina models

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