Author Topic: BIG McCulloch  (Read 1466 times)

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Offline Al Smith

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Re: BIG McCulloch
« Reply #10 on: April 14, 2011, 08:36:26 pm »
Oh Lawdy I looked it up and that thing has a flat back on it . :( That being the case most likely the diaphragm is puckered where it won't flex enough to get enough fuel in it and runs out lean .

You could try soaking the diaphragm in brake fluid a couple days to soften it up .You might also set the fuel lever a tad  high which might help it or it might flood it out .

I don't know if that guy from Sugar Creek supply has the flat back kiits or not .At any rate your'e just going to have to fiddle with it if you don't find a kit . I have a 250 with a flat back I must have had apart a half dozen times before I got it right . This BTW is my least favorite chainsaw carb .

Offline man of stihl

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Re: BIG McCulloch
« Reply #11 on: April 14, 2011, 08:51:21 pm »
Ok. Thanks Al.
Ron

Offline mcbob

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Re: BIG McCulloch
« Reply #12 on: May 09, 2011, 09:15:45 pm »
Sounds like your a mouse Man of Stihl one day you will understand ............ real men use these as pencil sharpers

McBob
I am a idiot so my pics disappeared.

Offline Al Smith

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Re: BIG McCulloch
« Reply #13 on: May 13, 2011, 07:36:04 pm »
I could never ever figure out why in the world they ever used a freaken flatback . They already had the good old Tillotson model HL .In fact after they dropped the flaty they went back to using it again .

Offline man of stihl

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Re: BIG McCulloch
« Reply #14 on: May 13, 2011, 08:49:11 pm »
That saw is on the back burner for the moment. My 250 also has the flatback. But its much smaller. I havn't had to mess with it yet. Knock on wood.
Ron

Offline Al Smith

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Re: BIG McCulloch
« Reply #15 on: May 14, 2011, 10:01:32 am »
Hmm,didn't know that . I kind of figured the flateys were all the same size .

Offline man of stihl

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Re: BIG McCulloch
« Reply #16 on: May 14, 2011, 10:32:06 am »
Here are the two side by side.
Ron

Offline Al Smith

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Re: BIG McCulloch
« Reply #17 on: May 14, 2011, 12:06:54 pm »
Unless my eyes are deceiving me the 250 is sporting an HL Tilley .After I do some work later on today I'll snap a pic of a 250 with a flatty and with an HL .

Offline Al Smith

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Re: BIG McCulloch
« Reply #18 on: May 14, 2011, 01:01:32 pm »
Lawdy I had to move about twenty saws to find these things .The Tilley HL 63 is on the left ,the fatty on the right .

Offline man of stihl

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Re: BIG McCulloch
« Reply #19 on: May 14, 2011, 01:21:45 pm »
Ok. I was assuming they were both called flatbacks. I guess ya learn something new every day. ;D
Ron

 

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