[C320-list] Throttle

[jim brown]

One quick and temporary fix is to put a small U clamp on the cable close to the engine and tighten just until the throttle won't back off  by itself. This won't undo the freeing up of the cable that you did. I stress temporary (unfortunately mine has gone 2 seasons now and seems OK). 




________________________________
From: "sholdr at aol.com" <sholdr at aol.com>
To: C320-List at Catalina320.com
Sent: Monday, June 8, 2009 11:20:35 AM
Subject: Re: [C320-list] Throttle

We have the Westerbeke on hull # 322 -- after lubricating the throttle
cable it works more freely but now won't hold full throttle position
without spontaneously backing off to 2000 rpm -- can easily hold it at
full throttle -- is there a tension adjustment in the system ?  Is it
at the engine or the control end?  Not a big problem as we seldom run
at WOT but in a blow it is a pain to hold the control full forward,
steer and watch the road ahead all at once.

Thanks

Phil Hansen  "Camelot" #322


-----Original Message-----
From: Scott Thompson <surprise at thompson87.com>
To: C320-List at Catalina320.com
Sent: Mon, 8 Jun 2009 10:06 am
Subject: Re: [C320-list] Throttle


Disconnecting the throttle cable at the engine is absolutely the first
step. I neglected this when I had a similar problem last year and spent
several days trying to track down a non-existent cable problem. When
the boat was hauled I had a mechanic look at the engine. The first
thing he did was disconnect the cable at the engine and work the
regulator by hand. He told me it was too stiff and that this is a
common problem on older Yanmars. My recollection is that the fix was to
replace an O-ring in the lever assembly, which apparently wears out
over time and causes binding. It was not an expensive repair, at least
not compared to all of the other boat units I dropped at the same time
getting my batteries upgr
aded, water heater replaced, etc. 
 
BTW, in my case the stiffness added a second symptom, namely that the
engine did not want to throttle all the way back to a proper idle.
She's been idling much better since this fix. 
 
Scott Thompson 
Surprise, 653 
 
Bruce Stanley wrote: 
> Rick 
> suggest you disconnect the cable at the Gear Box, 
> then try and see if it is still Stiff. 
> If it is replace it. 
> > Bruce Stanley C320 #1084/Sydney Australia 
> ======================= 
> On Mon, Jun 8, 2009 at 9:03 AM, Rick Evans
<ericstillwellevans at gmail.com>wrote: 
> >> My throttle since last year is stiff and unbearable I lubed it
with grease 
>> then graphite. Again I would assume I need to change the cable. 
>> 
>> Its a 2000 model with the yanmar 3gm30. 
>> 
>> Anyone know where to get the cable what model number. In addition
anyone 
>> perform this change before and can provide insight, things to look
for, step 
>> by steps? Anything welcome 
>> 
>> Thanks 
>> Rick 
>> 724 
>> Sent via BlackBerry from T-Mobile 
>> 
 
-- Scott Thompson 
Surprise, #653