[C38] stop switch

[Jeffry Matzdorff]

Excellent!!!!!


Captain Jeffry Matzdorff
323.855.0191
www.offshoredeliveryskipper.com<http://www.offshoredeliveryskipper.com/>
  ----- Original Message ----- 
  From: Joseph Launie<mailto:jlaunie at cox.net> 
  To: listserve at catalina38.org<mailto:listserve at catalina38.org> 
  Sent: Monday, February 27, 2012 5:56 PM
  Subject: Re: [C38] stop switch


  Don,
      I have a 4 cylinder Universal. All I know about engines is that you have to put diesel in the tank or they will not run. I have to hold the key to one side for 30 seconds to start which someone tells me is a glow plug. I have a button to hit to start the engine. I have a black handle in the cockpit by the switch and button which I pull up on to stop the engine. It works. I have no idea how or why. Joe Launie/Macavity

  On 2/27/2012 1:02 PM, Don Strong wrote: 
    Dear Julian: My Yanmar has two levers on the bow end, starboard side of the engine. One is the throttle, and the other is what Yanmar calls the "stop lever."
    Both are connected by cables to the cockpit. Pill on the cable for the stop in the cockpit, and the engine stops instantly.  If the cockpit cable freezes up, as it did before I replaced the cable, the engine can be stopped by pushing on the stop lever on front of the engine. 
        The compression release is used for just what Chuck suggests. I also used it once when the manifold bolts broke, which resulted in exhaust water shooting into the exhaust ports. I killed the engine,  opened the compression releases, squirted diesel into each cylinder, and turned the engine over with the battery. No harm resulted to the engine from this potential disaster. We replaced the bolts and running again in two hours. If it had been a gas engine, I would have had to remove the spark plugs to clear any water from the cylinders.

    Don

    On 2/27/12 12:49 PM, Chuck Finn wrote: 
      We stop our engines by starving them of fuel.  The reason diesel engines don't have spark plugs is cylinder compression is high enough to cause the fuel to begin and sustain combustion.   The decompression lever simply lowers the compression pressure in the cylinders and is generally used to help turn over our engines when it is very cold or the battery is low.  It can be used in an emergency to shut down the diesel, but this leaves fuel in the cylinders (not good) and causes hot gases to blow by the partially opened valves.  While this probably does not hurt once in a while, I believe it would hurt your valve seats, guides, etc. in the long run.  Besides the fact you are mucking up your engine!

      If you are having trouble starving the engine, you need to adjust your throttle linkage.

      Hope this helps!
      Chuck Finn
      Mighty Quinn #114
      Great Lakes

      On 2/27/2012 12:06 PM, Julian Adams wrote: 
        I note the Service manual says that you must not use the decompression lever to stop the engine - saying it causes serious damage to the exhaust valves.     I've used it many times - is this really a problem. What does it do to the Exhaust valves? (and what is it for anyway?)
        Julian Adams

         

        From: Steve Smolinske [mailto:SSmolinske at rainierrubber.com<mailto:SSmolinske at rainierrubber.com>] 
        Sent: Sunday, February 26, 2012 5:59 PM
        To: Catalina 38 Listserve
        Subject: Re: [C38] head gasket

         

        http://www.marinedieseldirect.com/universal/200157/universal-owners-manual-caution-statements.html<http://www.marinedieseldirect.com/universal/200157/universal-owners-manual-caution-statements.html>

         

        Universal engine manuals online

         

        Steve

         

        From: listserve-bounces at catalina38.org<mailto:listserve-bounces at catalina38.org> [mailto:listserve-bounces at catalina38.org]<mailto:[mailto:listserve-bounces at catalina38.org]> On Behalf Of PAUL NOTTE
        Sent: Sunday, February 26, 2012 11:36 AM
        To: listserve at catalina38.org<mailto:listserve at catalina38.org>
        Subject: [C38] head gasket

         

          I need to change the head gasket on Impulse and I'm looking for a free repair manual , has anyone found one on the net ?

         

          Paul 

          Impulse 

         


         

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-- 
Donald R. Strong
Professor
Dept. of Evolution and Ecology
University of California, Davis 95616
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