Difference between revisions of "Diesel Engine"

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''The Catalina 34 has had at least three different motors.  The M25, a 21hp engine, was installed on the the early models.  The M25XP (23 hp) became standard in 1988. The M30, a 4 cylinder producing 28hp, became an optional engine about the same time and is standard in the Mark II.  All are produced under the Universal Motors brand (now Westerbeke Corporation).  Due to lack of available supplies, the factory occasionally installed a Yanmar engine (note: Yanmars are higher-compression engines, which do not require glow plugs). ''
+
''The Catalina 34 has had at least three different engines.  The
 +
* M-25, a 3-cyl, 21 hp engine, was installed on the the early models.   
 +
* M-25XP (3-cyl, 23 hp) became standard in 1988.  
 +
* M-30, a 4-cylinder producing 28hp, became an optional engine about the same time and is standard in the Mark II.   
 +
 
 +
All are produced under the Universal Motors brand (now Westerbeke Corporation).  Due to lack of available supplies, the factory occasionally installed a Yanmar engine (note: Yanmars are higher-compression engines, which do not require glow plugs). ''
 +
 
 +
== Operators, Parts, Service Manuals AND Factory Service Bulletins AND Transmision Manuals ==
 +
*[http://www.c34.org/wiki/index.php?title=Manuals Engine and Transmission Manuals and Universal Factory Service Bulletins] <br>
  
 
== General ==
 
== General ==
Line 5: Line 13:
 
CRITICAL UPGRADES  includes a lot of engine information:  Critical Upgrades  http://c34.org/bbs/index.php/topic,5078.0.html
 
CRITICAL UPGRADES  includes a lot of engine information:  Critical Upgrades  http://c34.org/bbs/index.php/topic,5078.0.html
  
−
[RESOURCES - good M25 engine information,from a C36 owner http://realitycheck.me/resources.htm]
+
[http://realitycheck.me/resources.htm RESOURCES - good M25 engine information,from a C36 owner]
 +
 
 +
Spares for a Long Cruise
 +
 
 +
http://c34.org/bbs/index.php/topic,4590.0.html
 +
 
 +
Bleeding 101    http://c34.org/bbs/index.php/topic,6377.0.html
  
 
== Cooling ==
 
== Cooling ==
−
*[[Exhaust Pipe Replacement|Exhaust pipe replacement]]<br>
+
*[[ONE PROCEDURE TO FLUSH the ENGINE CLOSED COOLANT SYSTEM - from RC's (aka Mainesail aka Rod Collins aka Compass Marine)]] <small>-- </small>
 +
 
 +
*[[Replacement part numbers for the engine coolant circulation pump on the M-25, M-25XP, M-25XPA, M-35, M-35A]] '''  /  Note: This is NOT for the newer B-series engines''' --<small>KWKloeber 7/14/2019</small><br>
 +
*[[Flow directions in engine cooling hoses (both early and B-series engines)]] --<small>KWKloeber 2/2/2019</small>
 +
*[[Why do some of our engines have different Oberdorfer sea water pumps than others, and what about that cir-clip "holding on the impeller"? ]]  <small>-- KWKloeber 15 May 2015</small>
 +
The first part pertains more to C30's with M-25s/Oberdorfer pumps, than to M-25XPs -- but it's interesting background anyway....
 +
The second part pertains to all those with Ob pumps, and is subtitled "''Yes, you're right ...but we don't tell customers that''."
 +
<small>-- KWKloeber 15 May 2015</small>
 +
*Why SHERWOOD Raw Water Pumps leave a LOT to be desired:  See reply #7 here:  http://c34.org/bbs/index.php/topic,8493.0.html
 +
Thanks to Ken for that one, I'm tired of repeating it. - Stu  5/25/2015
 
*[[Heat Exchanger Maintenance|Heat exchanger maintenance, including zinc change]]<br>
 
*[[Heat Exchanger Maintenance|Heat exchanger maintenance, including zinc change]]<br>
 
*[[Overheating Due to Heat Exchanger|Heat exchanger upgrade]] to 3" version to prevent overheating<br>
 
*[[Overheating Due to Heat Exchanger|Heat exchanger upgrade]] to 3" version to prevent overheating<br>
−
*[[Hump Hose Replacement|Hump hose replacement guidance]]<br>
 
 
*[[Engine Air Lock - Engine Heating Problem|Overheating as a result of an air lock]]<br>
 
*[[Engine Air Lock - Engine Heating Problem|Overheating as a result of an air lock]]<br>
 
*[[Raw water pump, impellers and cooling system]] ''(Ron Hill's May 2002 Mainsheet article on Rebuilding an Oberdorfer water pump)''
 
*[[Raw water pump, impellers and cooling system]] ''(Ron Hill's May 2002 Mainsheet article on Rebuilding an Oberdorfer water pump)''
 
*[[Raw Water Pump Priming Problem|Raw water pump:]] Loss of self-priming capability<br>
 
*[[Raw Water Pump Priming Problem|Raw water pump:]] Loss of self-priming capability<br>
 
*[[Water Heater Doesn't Heat|Water heater doesn't heat when motoring]]<br>
 
*[[Water Heater Doesn't Heat|Water heater doesn't heat when motoring]]<br>
−
*[[Muffler Replacement or Repair|Water-lift muffler: Repair or replace?]]<br>
 
 
*[[3" heat exchanger mounts]]
 
*[[3" heat exchanger mounts]]
 
*[[Water Pump Impellers]]
 
*[[Water Pump Impellers]]
 
*[[Heat Exchanger Pictures]]
 
*[[Heat Exchanger Pictures]]
 
*[[Replacing a Sherwood Water Pump with an Oberdorfer]]
 
*[[Replacing a Sherwood Water Pump with an Oberdorfer]]
−
* Exhaust Hose Replacement with Pictures  http://c34.org/bbs/index.php/topic,6760.0.html
+
*  Rebuilding an OBERDORFER Raw Water Pump with Flix includes MODEL numbers for the Oberdorfer replacement pumps, see reply #12: http://c34.org/bbs/index.php/topic,6766.0.html
−
*  Rebuilding an OBERDORFER Raw Water Pump with Flix  http://c34.org/bbs/index.php/topic,6766.0.html
 
 
* HEAT EXCHANGER SOURCES and Replacement Bracket and Exchanger with Pictures  http://c34.org/bbs/index.php/topic,6920.0.html
 
* HEAT EXCHANGER SOURCES and Replacement Bracket and Exchanger with Pictures  http://c34.org/bbs/index.php/topic,6920.0.html
 
* COOLANT PUMP PARTS RESOURCE  http://forums.catalina.sailboatowners.com/showthread.php?t=169680
 
* COOLANT PUMP PARTS RESOURCE  http://forums.catalina.sailboatowners.com/showthread.php?t=169680
−
* EXHAUST NIPPLE from Westerbeke (courtesy of Dave Mauney, O'Day 35, 1989, "DAMWEGAS" , Oriental, NC , M25XP)  http://www.westerbeke.com/SinglePart...f73b1ca82d9219
+
* FRESHWATER COOLANT PUMP Parts # and Sources  http://c34.org/bbs/index.php/topic,8939.0.html
 +
* [http://c34.org/bbs/index.php/topic,9461.msg77379.html#msg77379  "B engines" FRESHWATER COOLANT PUMPs with 2-1/4" and 2-3/4" impellers] by Breakin Away
 +
* [https://c34.org/bbs/index.php/topic,8939.msg77420.html#msg77420 "B engine" COOLANT PUMP INSTALLATION NOTES] from Breakin Away
 
* Rebuilding an Exhaust Riser (also from Dave and a C36 skipper [previously posted])  http://www.realitycheck.me/building-...aust-riser.htm
 
* Rebuilding an Exhaust Riser (also from Dave and a C36 skipper [previously posted])  http://www.realitycheck.me/building-...aust-riser.htm
  
−
*[[Why do some of our engines have different Oberdorfer sea water pumps than others, and what about that cir-clip "holding the impeller on"? ]]
+
* '''Engine Thermostats'''
−
 
+
  '''M-25/XP/XPA; 35/A; early M-25XPB (to March 1998) use these 38mm diameter thermostats:'''
−
The first part pertains more to C30's with M-25s/Oberdorfer pumps, than to M-25XPs -- but it's interesting background anyway....
+
  160*F - Universal p/n 301358 or Kubota p/n 1E399-73010 (replaces 19203-73014, 19203-73013, 19203-73010.)
−
The second part pertains to us all.....
+
  180*F - Kubota p/n 15531-73014 (replaces 15531-73013, 15531-73011.)
−
 
+
  38mm Gasket - Universal p/n or Kubota p/n 16851-73270 (replaces 15676-73270, 15531-73270, 15676-73272.)
−
Here's the impeller/shaft misalignment, cir-clips stories....
+
 
−
 
+
  '''Later M25-XPBs (after March 1998) 44mm 160* F thermostat'''
−
Grease cups are on the Ob 202M-03 and 202M-07 series pumps (which were also used on some of our Universals), but no grease cups are on the M202-15 and 202M-16 series pumps.
+
  Universal p/n 201001 or Kubota p/n 19434-73014 (replaces 19434-73010, 19434-73013)
−
 
+
  44mm Gasket - Universal p/n 298843 or Kubota p/n ?
−
Back in the heyday of a boat-a-day per boat mfgr, Universal bought whatever model pumps were available from whatever sources they could get them (OB, SW) and made do.  Remember, "standard" is a word that the marine industry never embraced.  So to meet demand for engines -- remember 1 boat/day with "X" manufacturers = a crap load of demand for engines.
+
 
−
 
+
*<font color=red>''Recent update: ''</font color> THERMOSTAT BYPASS HOLE  See '''Service Bulletin #107''',  Kubota Tstats likely won’t have a bypass hole, so drill a 1/8” hole, or two, thru the inside edge of its flange so that there is a constant coolant flow thru the exhaust manifold when the Tstat is closed.  
−
So, Universal fabricated a special adapter plate and shaft adapter w/ male-male ends (below) to use the female shaft (M-03/07) pumps on some of our female-socketed Universals (our cam shaft end has a female fork [see below also] to accept the male end of an optional hour meter on the Kubota tractors.)  Yes, that's what the "pump land" on our gear covers is there for -- not a pump -- but a mechanical hour meter for the tractor.) 
+
[[File:thermostat with bypass holes.jpg|100px|left|]] <<= Click to enlarge
−
 
+
<br>
−
When removing the pump impeller and shaft, it's usually a simple matter of reinserting/rotating the shaft/impeller until the male tang on the shaft lines up w/ the fork on the camshaft.  But with the Universals that had the M-03/07 pumps, the male-male shaft adapter would remain inside the gear cover and then be misaligned when sliding the shaft/impeller back in (the adapter had to fit OVER the end of the shaft AND align with the female fork.)
 
−
 
 
−
Because pump body blocks the view, one didn't know what the problem was, and blue streaks were oftentimes seen emanating from below and a purple haze floated above companionways along the dock.  Luckily I had removed my M-07 pump first (not pulled the impeller/shaft alone,) so I saw the deal and never pulled just the shaft.
 
−
 
 
−
On the cir-clip "holding" the impeller on the shaft, here's the story.... 
 
−
 
 
−
Back in the dark 90s when I replaced the Universal adapter plate, male-male shaft adapter, and Ob 202M-07 pump - with an Ob 202M-15 model, the engineer-side saw that the-clip was "doing nothing."  But the young-n-dumb diesel-engine-novice side said, "Before I trash this clip, I want the expert(s') opinion(s') on why not to do that." 
 
−
 
 
−
I went 'round and 'round with Ob techies about the cir-clip and no one could fabricate a reasonable explanation why it was there ---
 
−
"''It holds the impeller in plac''e" (Nope, not necessary -- the pump cover does that.)
 
−
"''It keeps the shaft in place''." (Try again, the end of the cam shaft keeps the shaft from dropping out of the pump.) As determined as they were with BS, they couldn't get rid of me or the nagging question that begged for an answer -- "Why would you folks spend the money to machine a groove in the shaft and buy cir-clips, unless there's a good reason?" 
 
−
 
 
−
Out of sheer frustration I guess, and maybe to play a trick on an old-tymer colleague, they passed this idiot along to his extension.  it backfired -- he had been at Ob long enough and was honest enough to reveal the truth.  Ob had issues with the shafts coming out whenst pumps were knocked about in shipping (nah, not UPS) and thrown around in warehouses (really?) and the cir-clip holds it all together until the pump is bolted on.  
 
−
 
 
−
"''Yes you're right, it's unnecessary to have it on there and you can remove it once the pump is installed  ...but we don't tell customers that''."
 
−
 
 
−
--[[User:Kloebereng|KWKloeber]] 08:07, 15 May 2015 (PDT)
 
  
 
== Electrical ==
 
== Electrical ==
 +
*<font color=red>''See also: ''</font color> [[Electrical#Alternators_and_Battery_Chargers|Alternators and Battery Chargers]] <small>(takes you to another section)</small>
 +
*[http://c34.org/wiki/images/3/34/Gauge_Troubleshooting_Steps.pdf Cockpit Engine Panel Gauge Tech Reference / Troubleshooting Steps] --K Kloeber 11/3/2014
 
*[http://www.c34.org/wiki/index.php?title=M-25_Alternator_Mount_Conversion_Kit_%22B/M_256891%22 Alternator mount/bracket upgrade] <font color=red> ''Important safety upgrade for M25 (not XP) owners by Stu Jackson'' </font color><br>
 
*[http://www.c34.org/wiki/index.php?title=M-25_Alternator_Mount_Conversion_Kit_%22B/M_256891%22 Alternator mount/bracket upgrade] <font color=red> ''Important safety upgrade for M25 (not XP) owners by Stu Jackson'' </font color><br>
 
*[[Engine Harness Upgrade|Engine harness upgrade:]] A comprehensive overview by Gerry Douglas <font color=red> ''Important WARNING for M25 owners''</font color><br>
 
*[[Engine Harness Upgrade|Engine harness upgrade:]] A comprehensive overview by Gerry Douglas <font color=red> ''Important WARNING for M25 owners''</font color><br>
−
Engine Harness Upgrade from Maine Sail  http://www.pbase.com/mainecruising/universal_wiring_harness_upgrade and http://forums.catalina.sailboatowners.com/showthread.php?t=135558
+
*Engine Harness Upgrade from Maine Sail  http://www.pbase.com/mainecruising/universal_wiring_harness_upgrade and http://forums.catalina.sailboatowners.com/showthread.php?t=135558
 
*[http://www.c34.org/wiki/index.php?title=M25_%28not_the_XP%29_Engine_Harness_Warning/Upgrade Engine harness upgrade] by Capt. Al<br><font color=red> ''Important FIRE HAZARD for M25 series owners''</font color><br>
 
*[http://www.c34.org/wiki/index.php?title=M25_%28not_the_XP%29_Engine_Harness_Warning/Upgrade Engine harness upgrade] by Capt. Al<br><font color=red> ''Important FIRE HAZARD for M25 series owners''</font color><br>
 
*[http://www.c34.org/wiki/index.php?title=Faster%2C_More_Efficient_Glow_Plug_Heating_with_a_Solenoid Glow Plug Solenoid or Relay Installation] for faster starting<br>
 
*[http://www.c34.org/wiki/index.php?title=Faster%2C_More_Efficient_Glow_Plug_Heating_with_a_Solenoid Glow Plug Solenoid or Relay Installation] for faster starting<br>
 
*[[How to Add a Secondary Starting Switch in the Engine Box|Secondary start switch]]<br>
 
*[[How to Add a Secondary Starting Switch in the Engine Box|Secondary start switch]]<br>
 
*[[Slow or Difficult to Start Universal M-25XP Engine|Slow start fix]] with a wiring upgrade, starter re-build, and new starting battery by Mike Vaccaro <br>
 
*[[Slow or Difficult to Start Universal M-25XP Engine|Slow start fix]] with a wiring upgrade, starter re-build, and new starting battery by Mike Vaccaro <br>
−
*[[Tachometer Malfunction Q&A]] Includes general engine panel gauge troubleshooting<br>
+
*[[Tachometer Malfunction Q&A]]  
 
[[Category:Engine]]<br>
 
[[Category:Engine]]<br>
−
Thermostat Sender Source  http://c34.org/bbs/index.php/topic,7985.0.html]]
+
*Thermostat (temp gauge) Sender Source  http://c34.org/bbs/index.php/topic,7985.0.html]]
 +
*Engine cockpit panel wiring diagram from CD.com, thanks to Noah  http://www.catalinadirect.com/index.cfm/feature/73/z2644--z2855-instrument-panel-wiring-diagram.cfm
 +
 
 +
== Exhaust System ==
 +
The hot exhaust gases are mixed with cooling water in the exhaust elbow and water muffler on their way to the exhaust outlet in the stern of the boat.
 +
*<font color=blue>'''''Newest''' ''</font color> [[C34 Exhaust with Water Cooled Riser]] From C-34 owner Bill Shreeves<br>
 +
*[[Repairing an AquaLift muffler (with pictures)]] From C-30 owner Mark Hamilton<br>
 +
*[[Exhaust Pipe Replacement|Exhaust pipe replacement]]<br>
 +
*[[Hump Hose Replacement|Hump hose replacement guidance]]<br>
 +
* Exhaust Hose Replacement with Pictures EXCELLENT 4 page discussion with Flix on pages 3 & 4 by Stu  http://c34.org/bbs/index.php/topic,6760.0.html
 +
* EXHAUST NIPPLE from Westerbeke (courtesy of Dave Mauney, O'Day 35, 1989, "DAMWEGAS" , Oriental, NC , M25XP)  http://www.westerbeke.com/SinglePart...f73b1ca82d9219  That link no longer works.  Try this:  http://www.westerbeke.com/search/Asc/10-0/exhaust%20nipple    I got it under parts, search for exhaust nipple.
 +
* Rebuilding an Exhaust Riser (also from Dave and a C36 skipper [previously posted])  http://www.realitycheck.me/building-...aust-riser.htm
 +
*[[Muffler Replacement or Repair|Water-lift muffler: Repair or replace?]]<br>
  
 
==Fuel==
 
==Fuel==
Line 85: Line 104:
 
*[[Rebuilding the M25-XP|Rebuilding a M25xp]] by Dave Sanner<br>
 
*[[Rebuilding the M25-XP|Rebuilding a M25xp]] by Dave Sanner<br>
 
*[[Replacement Filters, Belts, and Lubricants|Replacement filters, belts, and oils equivalents list:]] find alternate replacement brands<br>
 
*[[Replacement Filters, Belts, and Lubricants|Replacement filters, belts, and oils equivalents list:]] find alternate replacement brands<br>
 +
*Universal M-25 & M25XP Alternator Bracket Upgrade & Alignment IMPORTANT http://c34.org/bbs/index.php/topic,7917.0.html
 +
*[http://www.c34.org/wiki/index.php?title=Manuals Universal Diesel Owner's, Parts, and Service Manuals]
  
 
*Kubota Filter Equivalents  http://www.orangetractortalks.com/2008/12/gray-market-kubota-oil-filter-part-numbers/<br>
 
*Kubota Filter Equivalents  http://www.orangetractortalks.com/2008/12/gray-market-kubota-oil-filter-part-numbers/<br>
  
−
'''[NOTE]''' ''The filter interchanges at the above OTT website link can't necessarily be trusted; double-check if you use them.<br>
+
'''[NOTE]''' The filter interchanges at the above OTT website can't necessarily be trusted; double-check if you use them.  
−
''Notice, for instance, that OTT lists NAPA p/n 3389 for both fuel and lube application. I don't THINK so. I brought this to OTT's attention and suggested they correct the list.  OTT asked ME to provide THEM all the correct interchange numbers and they would revise the website.''<br>  ''Again, I don't THINK so.'' :-)''
+
For instance, OTT lists NAPA p/n 3389 for both fuel and lube application.  
−
--[[User:Kloebereng|KWKloeber]] 21:33, 29 June 2014 (PDT)
+
  I brought this to OTT's attention and suggested they correct its list.  OTT asked ME to provide THEM
−
 
+
all the correct interchange numbers nd they would revise the website.<br>  I don't THINK so.  :-)
 +
<small>--[[User:Kloebereng|KWKloeber]] 21:33, 29 June 2014 (PDT)</small>
 +
<br>
  
 +
== Transmission ==
 +
*[[Transmission Replacement]]
 
*[[Engine Power Loss Diagnosis and Solution|Solving engine power loss:]] Working on the injection pump<br>
 
*[[Engine Power Loss Diagnosis and Solution|Solving engine power loss:]] Working on the injection pump<br>
 
*[[How to Check the Transmission Oil|Transmissions: Checking the oil]]<br>
 
*[[How to Check the Transmission Oil|Transmissions: Checking the oil]]<br>
−
Transmission Fluid 101 - link to the message board:  http://c34.org/bbs/index.php/topic,6417.0.html
+
*Transmission Fluid 101 - link to the message board:  http://c34.org/bbs/index.php/topic,6417.0.html
 +
*[[Better Transmission Dipstick Access - by Phil Spicer]] = link to the message board:  http://c34.org/bbs/index.php/topic,8828.0.html
 
*[[The Right Transmission Gear for Sailing|Transmissions: The right gear while under sail]]<br>
 
*[[The Right Transmission Gear for Sailing|Transmissions: The right gear while under sail]]<br>
−
*[[Media:TransmissionCable.pdf|Transmissions:Hurth Transmission Cable Adjustment PDF file]]
+
*Transmission Drain Plug Replacement for Crush Washer - thanks to Loren Beach  http://www.ericsonyachts.org/infoexchange/entry.php?213-Hurth-17-mm-Drain-Plug-washer
−
*[http://c34.org/manuals/ZF_Hurth_Repair_manual.pdf Transmissions:Hurth Repair Manual PDF file]
+
*[http://c34.org/wiki/images/4/47/Hurth_repair_manual_searchable.pdf Hurth Detailed Searchable Parts Manual] <small>- KKloeber 2016-5-13</small>
−
*[[Media:universal_25_service_manual.pdf|Universal Diesel Model 15 and 25 Service Manual]]
+
*Transmission & Damper Plate Link (from the Forum)  https://c34.org/bbs/index.php/topic,10436.0.html
−
 
 
−
 
−
Universal M-25 & M25XP Alternator Bracket Upgrade & Alignment IMPORTANT
 
−
 
 
−
http://c34.org/bbs/index.php/topic,7917.0.html
 
  
 
==Misc Projects==
 
==Misc Projects==
 +
*<font color=red>''Updated: ''</font color> *Options to Route Crankcase Breather Hose to Air Intake [http://c34.org/wiki/images/1/13/Example.pdf '''VIEW THE PDF''''' ] - K Kloeber May 2021
 
*[[Engine Cover Hinge|Engine compartment cover hinge]]<br>
 
*[[Engine Cover Hinge|Engine compartment cover hinge]]<br>
 
*[[Removing Engine Using Boom]]
 
*[[Removing Engine Using Boom]]
Line 113: Line 135:
 
* Removing Engine  Catalina 30 from Captain Dan  with photos - good ideas for re-bracing engine mounts, too  http://forums.catalina.sailboatowners.com/showthread.php?t=168891
 
* Removing Engine  Catalina 30 from Captain Dan  with photos - good ideas for re-bracing engine mounts, too  http://forums.catalina.sailboatowners.com/showthread.php?t=168891
  
−
*Options to Route Crankcase Breather Hose to Air Intake [http://c34.org/wiki/images/1/13/Example.pdf '''VIEW THE PDF''''' ]<br>
+
 
 +
 
 +
* Remote Oil Filter Details from Maine Sail:  http://www.sailnet.com/forums/engines/230865-remote-oil-filter-kubota-diesel.html#post3224841
  
 
== Shaft & Propeller  ==
 
== Shaft & Propeller  ==

Latest revision as of 00:13, 20 June 2024

The Catalina 34 has had at least three different engines. The

  • M-25, a 3-cyl, 21 hp engine, was installed on the the early models.
  • M-25XP (3-cyl, 23 hp) became standard in 1988.
  • M-30, a 4-cylinder producing 28hp, became an optional engine about the same time and is standard in the Mark II.

All are produced under the Universal Motors brand (now Westerbeke Corporation). Due to lack of available supplies, the factory occasionally installed a Yanmar engine (note: Yanmars are higher-compression engines, which do not require glow plugs).

Operators, Parts, Service Manuals AND Factory Service Bulletins AND Transmision Manuals

General

CRITICAL UPGRADES includes a lot of engine information: Critical Upgrades http://c34.org/bbs/index.php/topic,5078.0.html

RESOURCES - good M25 engine information,from a C36 owner

Spares for a Long Cruise

http://c34.org/bbs/index.php/topic,4590.0.html

Bleeding 101 http://c34.org/bbs/index.php/topic,6377.0.html

Cooling

The first part pertains more to C30's with M-25s/Oberdorfer pumps, than to M-25XPs -- but it's interesting background anyway.... 
The second part pertains to all those with Ob pumps, and is subtitled "Yes, you're right ...but we don't tell customers that."
-- KWKloeber 15 May 2015

Thanks to Ken for that one, I'm tired of repeating it. - Stu  5/25/2015
  • Engine Thermostats
 M-25/XP/XPA; 35/A; early M-25XPB (to March 1998) use these 38mm diameter thermostats:
 160*F - Universal p/n 301358 or Kubota p/n 1E399-73010 (replaces 19203-73014, 19203-73013, 19203-73010.)
 180*F - Kubota p/n 15531-73014 (replaces 15531-73013, 15531-73011.)
 38mm Gasket - Universal p/n or Kubota p/n 16851-73270 (replaces 15676-73270, 15531-73270, 15676-73272.)
 
 Later M25-XPBs (after March 1998) 44mm 160* F thermostat
 Universal p/n 201001 or Kubota p/n 19434-73014 (replaces 19434-73010, 19434-73013)
 44mm Gasket - Universal p/n 298843 or Kubota p/n ?
  • Recent update: THERMOSTAT BYPASS HOLE See Service Bulletin #107, Kubota Tstats likely won’t have a bypass hole, so drill a 1/8” hole, or two, thru the inside edge of its flange so that there is a constant coolant flow thru the exhaust manifold when the Tstat is closed.
Thermostat with bypass holes.jpg

<<= Click to enlarge


Electrical

Exhaust System

The hot exhaust gases are mixed with cooling water in the exhaust elbow and water muffler on their way to the exhaust outlet in the stern of the boat.

Fuel

Mechanical

[NOTE] The filter interchanges at the above OTT website can't necessarily be trusted; double-check if you use them. 
For instance, OTT lists NAPA p/n 3389 for both fuel and lube application. 
I brought this to OTT's attention and suggested they correct its list.  OTT asked ME to provide THEM
all the correct interchange numbers  nd they would revise the website.
  I don't THINK so.  :-)
--KWKloeber 21:33, 29 June 2014 (PDT)


Transmission

Misc Projects


Shaft & Propeller

Also of Interest

Westerbeke/Universal now has the owner manuals online. You can download them at http://www.westerbeke.com/Products/OnlineManuals.aspx

Kubota Block Equivalents (you have to scroll down) http://www.ericsonyachts.org/infoexchange/showthread.php?10241-Universal-5432-amp-M40-engine-information&highlight=kubota+block

and

http://c34.org/bbs/index.php/topic,8113.msg56648.html#msg56648

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