[AT] OT McCullogh chain saw parts

Tue Dec 30 20:09:15 PST 2008

I sure do and never paid too much attention until now.
By the way, the Weed eater I am referring to was a 1981, bought new and it 
lasted until last year.
A fun thing, you can Google,  "duck bill valve" and it explains the 
operation of the whole thing we were talking about.
Nice talking to you about it.
Skip

----- Original Message ----- 
From: "charliehill" <charliehill at embarqmail.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Tuesday, December 30, 2008 9:45 PM
Subject: Re: [AT] OT McCullogh chain saw parts

> Yes it pretty well has to be vented to some degree to keep the presure
> somewhat constant.  Luckily this 30 year old McCulloch is built a little
> better and uses a little less plastic that some of the stuff out now.
>
> Do you remember how the old 2 stroke dirt bikes  had a plastic tube run
> through the center of the gas cap?  I always figured it was some sort of
> vent line but I never owned one so I don't know.
>
> Charlie
> ----- Original Message ----- 
> From: "Skip Cleveland" <skipcleveland at bellsouth.net>
> To: "Antique tractor email discussion group" 
> <at at lists.antique-tractor.com>
> Sent: Tuesday, December 30, 2008 9:23 PM
> Subject: Re: [AT] OT McCullogh chain saw parts
>
>
>> Now you really got me to thinking.
>> My old Sears weed eater had a "duck bill valve" in the plastic tank. The
>> valve allowed pressure to build in the tank but would allow outside air 
>> to
>> get in, I guess, if the engine could suck up more gas than the crank case
>> pulses would provide. It was a soft plastic thing which when 
>> deteriorated,
>> would let gas and pressure out and the engine would no longer start and
>> run.
>> It was seperate from the cap, which had no vent, the valve fit in a small
>> hole in the plastic tank.
>> Skip
>>
>>
>>
>>
>>
>>
>> ----- Original Message ----- 
>> From: "charliehill" <charliehill at embarqmail.com>
>> To: "Antique tractor email discussion group"
>> <at at lists.antique-tractor.com>
>> Sent: Tuesday, December 30, 2008 8:48 PM
>> Subject: Re: [AT] OT McCullogh chain saw parts
>>
>>
>>> Thanks Skip.  That is why I was saying it has to be the right amount of
>>> vent.  There is a vent valve in the cap but I'm sure it's set for a
>>> certain
>>> pressure/vacuum.
>>>
>>> Charlie
>>> ----- Original Message ----- 
>>> From: "Skip Cleveland" <skipcleveland at bellsouth.net>
>>> To: "Antique tractor email discussion group"
>>> <at at lists.antique-tractor.com>
>>> Sent: Tuesday, December 30, 2008 8:10 PM
>>> Subject: Re: [AT] OT McCullogh chain saw parts
>>>
>>>
>>>> The cap should not be vented as the tank and fuel system is pressurized
>>>> from
>>>> the crank case. The little diaphragm carb is called a pressure carb 
>>>> when
>>>> used on an aerobatic airplane.
>>>> Skip
>>>> ----- Original Message ----- 
>>>> From: "Jason" <dejoodster at gmail.com>
>>>> To: "Antique tractor email discussion group"
>>>> <at at lists.antique-tractor.com>
>>>> Sent: Tuesday, December 30, 2008 7:56 PM
>>>> Subject: Re: [AT] OT McCullogh chain saw parts
>>>>
>>>>
>>>>> Here's a link to mccullough parts manuals.
>>>>>
>>>>> http://www.mymowerparts.com/pdf/Free_McCulloch_Parts_Service_Repair_Manuals/Gas_Powered_Chain_Saws/
>>>>>
>>>>> And as far as the venting, all that should matter is that it lets air
>>>>> in
>>>>> and
>>>>> keeps fuel from running out.
>>>>>
>>>>> Jason DeJoode
>>>>>
>>>>> Eagan, MN
>>>>>
>>>>> ----- Original Message ----- 
>>>>> From: "charliehill" <charliehill at embarqmail.com>
>>>>> To: "Antique tractor email discussion group"
>>>>> <at at lists.antique-tractor.com>
>>>>> Sent: Tuesday, December 30, 2008 6:24 PM
>>>>> Subject: Re: [AT] OT McCullogh chain saw parts
>>>>>
>>>>>
>>>>>> Thanks Bob.  Most of them are gone around here too.  I know of one
>>>>>> shop
>>>>>> that
>>>>>> might have it IF they ever carried McCulloch to begin with.  I think
>>>>>> I'll
>>>>>> call them tomorrow.
>>>>>> The problem is, it not only has to fit the hole it has to have the
>>>>>> right
>>>>>> amount of vent too.
>>>>>>
>>>>>> Hopefully tomorrow I'll find mine.
>>>>>>
>>>>>> charlie
>>>>>> ----- Original Message ----- 
>>>>>> From: "Bob McNitt" <nysports at frontiernet.net>
>>>>>> To: "Antique tractor email discussion group"
>>>>>> <at at lists.antique-tractor.com>
>>>>>> Sent: Tuesday, December 30, 2008 7:11 PM
>>>>>> Subject: Re: [AT] OT McCullogh chain saw parts
>>>>>>
>>>>>>
>>>>>>> Charlie -
>>>>>>>
>>>>>>> We used to have several small engine repair & sales shops around
>>>>>>> here,
>>>>>>> and
>>>>>>> a
>>>>>>> couple of the guys were amazing when it came to locating or finding
>>>>>>> replacement parts for old power tools. They were creative and great
>>>>>>> "tinkerers" and might even find one that was from a different 
>>>>>>> machine
>>>>>>> or
>>>>>>> make but that would still fit and function perfectly. Sadly, most 
>>>>>>> are
>>>>>>> long
>>>>>>> gone now, victims of the times. But if you're lucky enough to have
>>>>>>> any
>>>>>>> of
>>>>>>> those gems left down your way, worse comes to worst, they just might
>>>>>>> have
>>>>>>> a
>>>>>>> cap that would fit your 10-10.
>>>>>>>
>>>>>>> Bob
>>>>>>>
>>>>>>> ----- Original Message ----- 
>>>>>>> From: "charliehill" <charliehill at embarqmail.com>
>>>>>>> To: "Antique tractor email discussion group"
>>>>>>> <at at lists.antique-tractor.com>
>>>>>>> Sent: Tuesday, December 30, 2008 5:07 PM
>>>>>>> Subject: [AT] OT McCullogh chain saw parts
>>>>>>>
>>>>>>>
>>>>>>>> Does anyone happen to have a junked out McCulloch ProMac 10-10A
>>>>>>>> laying
>>>>>>>> around that would part with the gas cap?  Mine magically 
>>>>>>>> disappeared
>>>>>>>> today.
>>>>>>>> I'm thinking my neighbors dog might be the culprit.  You can't buy
>>>>>>>> parts
>>>>>>>> for
>>>>>>>> them any longer but this saw is just like brand new.  I hate for a
>>>>>>>> gas
>>>>>>>> cap
>>>>>>>> to put it out to pasture.
>>>>>>>>
>>>>>>>> If you have one you'd part with or know of a parts source (I've
>>>>>>>> tried
>>>>>>>> or
>>>>>>>> in
>>>>>>>> the process of trying all sources I know about) I'd appreciate it.
>>>>>>>>
>>>>>>>> Charlie
>>>>>>>>
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