Catalina 36

Built 1982–? by Catalina Yachts

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About the Catalina 36

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

Built: 1982–?
Builder: Catalina Yachts
Designer: Frank Butler
Length: 36.33 ft
Waterline: 30.25 ft
Beam: 11.92 ft
Draft: 5.83 ft
Displacement: 13,500 lb
Ballast: 6,000 lb
Hull: fiberglass
Hull / keel: fin keel
Rig: sloop
Propulsion: inboard
Fuel: varies by year
Water: varies by year
Holding: varies by year
Water heater: 6 gal · AC · standard
Stern thruster: not fitted
Steering: pedestal cable · Edson

Tank capacities — where the figures come from

Fuel varies by year
“Diesel Fuel 33 Gal.” — brochure (1982 (first brochure)), catalinayachts.com · “FUEL CAPACITY 33 GAL” — owner's manual (Mk I (mid-1980s manual)), catalina36.org · “Fuel25 gal” — search excerpt (1992 Mk I), breweryacht.com · “Fuel Tanks: 1 (25 Gallons)” — search excerpt (2006 Mk II), davetownleyyachts.com · “25 gallons in aluminum tank” — search excerpt (2001 Mk II), se.yachtworld.com

The builder's first brochure (1982) and the Mk I owner's manual both give 33 gal, settling the figure for early boats. Listings for a 1992 Mk I and 2001/2006 Mk IIs give 25 gal (aluminum tank), matching a spec database's 25; no builder source gives the changeover year.
Water varies by year
“Fresh Water Std. 48 Gal.” — brochure (1982 (first brochure)), catalinayachts.com · “STARBOARD 17 GAL, AFT CENTER TANK 25 GAL, HOT WATER HEATER 6 GAL, TOTAL 48 GAL” — owner's manual (Mk I (mid-1980s manual)), catalina36.org · “Fresh Water72 gal” — search excerpt (1992 Mk I), breweryacht.com · “Fresh Water Tanks: 3 (80 Gallons)” — search excerpt (2006 Mk II), davetownleyyachts.com · “82 Gallons Total Fresh Water Tank Capacity” — search excerpt (2002 Mk II), yachtworld.com · “Water: 72 gallons in 3 poly tanks” — search excerpt (2001 Mk II), se.yachtworld.com

Mk I builder documents give 17 + 25 = 42 gal in tanks, or 48 gal including the 6-gal water heater (the brochure quotes 48). A 1992 Mk I listing gives 72 gal; the Mk II (1995-2006) has three tanks, with listings at 72-82 gal. The capacity genuinely changed over the run.
Holding varies by year
“WASTE TANK CAPACITY 21 GAL” — owner's manual (Mk I (mid-1980s manual)), catalina36.org · “Holding Tanks: 1 (17 Gallons)” — search excerpt (2006 Mk II), davetownleyyachts.com · “Holding: 17 gallons in poly tank” — search excerpt (2001 Mk II), se.yachtworld.com

The Mk I owner's manual gives a 21-gal waste tank; two Mk II listings agree on 17 gal.
Water heater 6 gal · AC · standard
“FRESH WATER CAPACITY: STARBOARD 17 GAL, AFT CENTER TANK 25 GAL, HOT WATER HEATER 6 GAL, TOTAL 48 GAL” — owner's manual, catalina36.org · “Fresh Water ... Std. 48 Gal.” — brochure (1982-83), catalinayachts.com · “110 VOLT SHORE POWER SCHEMATIC: WATER HEATER on 20 AMP breaker” — owner's manual, catalina36.org

The Mk I builder's manual counts a 6 gal water heater within the 48 gal fresh-water total (17 + 25 + 6), so don't add it twice. The first sales brochure gives 48 gal as the standard water capacity, so the heater is included; that match between the two builder documents, not an equipment list, is why it's shown as standard.

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 Mk I builder manual and its enclosed Edson data sheet list no thruster; no builder 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 · Edson
“THE EMERGENCY TILLER MOVES THE WHOLE STEERING, INCLUDING CABLES AND QUADRANT” — owner's manual, catalina36.org · “Edson Steering Data Sheet Catalina 34/36 S-1165-B: Fig. 335C Edson Pedestal Steerer; Fig. 644S 32" Edson Destroyer Wheel” — owner's manual, catalina36.org

The Mk I builder manual includes Edson's data sheet: Edson 335 pedestal, 32-inch destroyer wheel, chain and wire to an 8-inch radial drive, with Edson friction brake, guard and engine controls as factory options. Our earlier figure of a 42-inch wheel on the Mk II wasn't checked here.

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.

Mark II introduced August 1994 at hull #1368 (larger cockpit, new deck and interior). MkII hull is solid hand-laid glass with vinylester outer plies; deck balsa-cored (earlier decks plywood-cored). Lead keel on 316 stainless bolts. Standard fin (5.83 ft) and wing keel (4.43 ft); a Scheel keel was offered for a while; tall rig optional. First brochure confirms 13,500 lb and 5 ft 10 in standard draft (shoal 5 ft 1 in, 14,300 lb). Builder history: first boat July 1982, hull #2000 December 2000. Specs above are Mark I (sailboatdata).

Engines fitted

Universal M25 — 21 hp, diesel, single standard
Early Mark I boats: the owners' association says the initial engines were 21 hp M25s. The 23 hp M25XP (same footprint) also appears, e.g. as a replacement on a 1987 boat.

Sources: catalina36.org · catalina36.org
Universal M35 (M35A) — 30 hp, diesel, single standard
30 hp M35 found in later Mark I boats (e.g. a 1990 hull #1041) and some mid-1990s boats, per the owners' association.

Sources: catalina36.org · catalina36.org
Universal M35B — 35 hp, diesel, single standard
Mark II (1994-2005): Wikipedia gives a 35 hp Universal diesel; the association lists the M35B at 35 hp and owners discuss it in post-1996 boats.

Sources: en.wikipedia.org · catalina36.org · catalina36.org

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

Generator

Neither the first brochure nor the Mk I owner's manual mentions a generator.

Manuals and brochures online

Brochure Catalina 36 first sales brochure (specifications incl. water and fuel) (1982) — catalinayachts.com
Brochure Catalina 36 sales brochure (specifications, no tankage) (1990) — catalinayachts.com
Owner's manual Catalina 36 Mk I Owner's Manual with reference data sheet (mid-1980s) — catalina36.org

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

Known problems for this model

Leaking chainplates deck
Owners surveyed by Practical Sailor commonly report chainplate leaks needing yearly inspection or rebedding.
practical-sailor.com
Keel smile and wood keel stub (Mark I) hull
On Mark I boats a recurring crack at the keel joint or sunken keel-bolt washers can point to a deteriorating wooden keel stub; owners discuss removing the wood, retorquing bolts and resealing the joint.
forums.sailboatowners.com · cruisersforum.com
Average joinery interior
A common owner complaint is production-grade interior woodwork (ill-fitting cabinets and drawers).
practical-sailor.com
Poor access to port side of engine engine
Reaching the port side of the engine is difficult.
practical-sailor.com

Engines & parts

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

Factory standard engine — you entered “Universal M25”

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 standard engine — you entered “Universal M35 (M35A)”

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 (12)

sailboatdata.com · practical-sailor.com · forums.sailboatowners.com · cruisersforum.com · catalinadirect.com · catalinayachts.com · catalinayachts.com · catalinayachts.com · catalina36.org · catalina36.org · en.wikipedia.org · catalina36.org

Other Catalina models

Catalina 22 1969–?
Catalina 25 1976–?
Catalina 27 1970–1991
Catalina 30 1974–2008
Catalina 320 1993–?
Catalina 34 1985–?
Catalina 380 1996–?
Catalina 400 1994–?
Catalina 42 1989–2011

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