[C320-list] Yanmar engine Throttle Adjustment

Wed May 22 16:53:21 PDT 2013

You can find instructions and pictures of how to make this adjustment in 
the following document on the C320 club site. Here is a link:
http://www.catalina320.com/filemgmt/visit.php?lid=22

I recommend that you explore the files area. There are TONS of useful 
documents out there.

Doug Treff
#350 - September Song
Pasadena, MD

On 5/19/2013 6:44 AM, millers1 at aol.com wrote:
> Thanks, for the long term and quick fixes.    Art
>
>
> -----Original Message-----
> From: jim brown <jbrown5093 at yahoo.com>
> To: C320-List <C320-List at Catalina320.com>
> Sent: Sat, May 18, 2013 6:30 pm
> Subject: Re: [C320-list] Yanmar engine Throttle Adjustment
>
>
> This is usually a recurring problem but the fix by removing he compass etc is
> not difficult and the proper way to do it (at least yearly in my case). The
> alternative and a little easier for a quick fix is to put a U bolt on the
> throttle cable where it is accessible through the aft cabin access to the engine
> thru hull and tighten it down until there is enough friction between the plastic
> cover and the actual cable so it doesn't slip. I actually think Edson sells this
> part in SS but I just used a galvanized one from the hardware store. I keep one
> handy for a quick fix until I get around to taking the compass off etc.
>
> Jim Brown
>
>
>
>
> ________________________________
>   From: Arthur Miller <millers1 at aol.com>
> To: "C320-List at Catalina320.com" <C320-List at Catalina320.com>
> Sent: Saturday, May 18, 2013 4:34 PM
> Subject: Re: [C320-list] Yanmar engine Throttle Adjustment
>   
>
> Karl,
> Thanks.  So that's where they hid the adjustment!    Art
>
> Sent from my iPad
>
> On May 18, 2013, at 4:09 PM, Karl Mielenhausen <kmielen at suddenlink.net> wrote:
>
>> A search of the list archives yields much past discussion on this topic.
>>
>> Here is a good write up of the solution from Allan Field...
>> http://lists.catalina320.com/htdig.cgi/c320-list-catalina320.com/2006-April/013443.html
>>
>> Anyone can search the archives by going here...
>> http://lists.catalina320.com/pipermail/c320-list-catalina320.com/
>> Try it.... after over 7 years of owner discussions, usually the problem and
>> solution have been discussed before.
>>
>> Karl
>>
>> On Sat, May 18, 2013 at 3:07 PM, <millers1 at aol.com> wrote:
>>
>>> My engine throttle slowly creep/slips back  from higher RPM settings to
>>> about 2500rpm.
>>> I see no readily apparent way to adjust (increase ) the engine throttle
>>> drag.  Has anyone had this
>>> problem and how was it corrected??? A small bungee cord works....... but...
>>>
>>> Art Liberty  #680
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: Gene Helfman <genehelfman at gmail.com>
>>> To: C320-List <C320-List at catalina320.com>
>>> Sent: Sat, May 18, 2013 2:53 pm
>>> Subject: Re: [C320-list] Removing the Maxwell 500
>>>
>>>
>>> Thanks, Scott.  That's exactly what I needed to know.  I managed to get a
>>> Maxwell rep on the phone who basically said the same thing.  I had tried
>>> prying the old drum off with a screw driver with no luck.  He suggested
>>> banging on several wooden wedges spaced around the drum base after blasting
>>> the drum with a heat gun.  I'm waiting for the rain to stop to give that a
>>> try.  Also, removing the cir-clips that hold the drum shaft in place is
>>> supposed to ease the removal process.
>>>
>>> I've spent a couple of hours on my back in the V-berth.  We finally decided
>>> to remove a one foot by one foot section of the non-structural  fiberglass
>>> wall to which the plywood attaches to increase access to the area where the
>>> windlass gear box, etc live.  This gave more working room for playing with
>>> the old unit and should make installation of the new windlass easier.  I
>>> will probably use the removed section for beefing up the outer attachment
>>> area for the new windlass since it has a larger footprint than the old 500.
>>>
>>> gene
>>>
>>>
>>> On Fri, May 17, 2013 at 3:34 PM, Scott Thompson <surprise at thompson87.com
>>>> wrote:
>>>> These links to documents I put on the Association website a long time ago
>>>> might be helpful:
>>>>
>>>> Exploded parts view: http://www.catalina320.com/**
>>>> filemgmt/index.php?id=112<
>>> http://www.catalina320.com/filemgmt/index.php?id=112>
>>>> Manual: http://www.catalina320.com/**filemgmt/index.php?id=113<
>>> http://www.catalina320.com/filemgmt/index.php?id=113>
>>>> The former is for the VC500 model (no chain gypsy) and the latter is for
>>>> the VW500 model, which includes a chain gypsy, but my understanding is
>>> that
>>>> the drum assembly is the same on both models. The VW500 model has a
>>> longer
>>>> shaft and a few extra parts. Based on your description I suspect you have
>>>> the VC500.
>>>>
>>>> I believe that the drum should NOT turn when rotated with a pipe wrench
>>>> because it is keyed to the shaft and shaft rotation is more or less
>>>> impossible because of the use of a worm gear in the transmission. But
>>>> rotating it is not required for removal. Rather you need to move it off
>>> the
>>>> shaft without rotating it, i.e. by moving it parallel to the shaft and
>>>> internal key. In other words, it should just slide off the shaft. If the
>>>> drum won't move parallel to the shaft there could be internal corrosion
>>> or
>>>> sand preventing it from sliding on the shaft.
>>>>
>>>> What I would do is insert a lever (try a large screwdriver at first)
>>>> between the drum and mounting plate and try to pry the drum away from the
>>>> mounting plate. If that fails try levering in more than one place, or
>>> get a
>>>> bigger lever. When it moves, it will probably give all at once, so
>>> arrange
>>>> for some protection of the gelcoat in case it goes flying off the shaft
>>>> with gusto. Also avoid using the fiberglass itself as a fulcrum. You want
>>>> the intense point-loading to be entirely metal to metal.
>>>>
>>>> I don't think it is possible to remove the windlass in one piece, or to
>>>> remove it without first removing the drum, even with a willingness to do
>>>> damage to the windlass. The problem is that the motor / transmission is
>>> on
>>>> one side of the bulkhead but is bolted to the mounting plate on the other
>>>> side, and the bolts are hidden by the drum. You need to remove the drum,
>>>> then the bolts holding the motor, then the motor itself (which requires
>>>> access to the rear, obtained by removing the plywood panel from the front
>>>> of the V-berth and then lying on your back looking upward), and only then
>>>> the mounting plate.
>>>>
>>>> Been there.
>>>>
>>>> Scott Thompson
>>>> Surprise, #653
>>>>
>>>>
>>>> On 5/16/2013 10:27 PM, Gene Helfman wrote:
>>>>
>>>>> We've decided to replace our non-functional Maxwell 500 (1997 c320)
>>> with a
>>>>> newer, larger model with a chainwheel, the Maxwell VW10.  I'm now trying
>>>>> to
>>>>> get the old 500 out and am stuck.  Does anyone know how to remove the
>>> rope
>>>>> drum?  I've taken off the outer cap, screw, and washer and can't figure
>>>>> out
>>>>> what to do next.  It doesn't help that the drum appears to be frozen in
>>>>> place and can't be rotated, even with a pipe wrench.  I'm not afraid of
>>>>> breaking things if necessary, although if I can get the whole thing off
>>>>> the
>>>>> boat in one piece I'd be happy to offer it up to anyone gratis for spare
>>>>> parts.
>>>>>
>>>>> gene
>>>>>
>>>>> *Satori*, #398
>>>>>
>>>>>
>>>
>>> --
>>> Gene Helfman, Professor Emeritus
>>> Odum School of Ecology, University of Georgia
>>> PERMANENT address:
>>>     498 Shoreland Dr., Lopez Is., WA 98261
>>>     (360) 468-2136
>>>     genehelfman at gmail.com
>>>
>>> "You noticed nobody gives a damn about beached minnows."
>>>
>>>
>>>
>   

-- 
Doug Treff
doug at treff.us