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size atomiser/needle jet rotax
Topic Started: Jun 24 2013, 08:30 AM (669 Views)
BK350
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Marquess
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Hi,

have some running problems with my tractor. Needle was set on 2nd clip from top - too lean (pulls like hell but engine is getting far too hot and is running hard); set the needle on 3rd clip - too rich. Didnt expect such big difference when lifting the nneedle one clip. Checked needle valve - is working how it should, float height set to 18mm. Had a look on the needle - has some worn parts...So now will order replacement parts (needle, atomiser, needle valve ) to start solving the problems

What I found in my PHM: Needle valve 300, thats recommend.
K32 needle, atomiser 270DR - are that the right standard sizes for the PHM in our tractors??


Thanks,
Chris
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Monty
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Charlie Big Banana's
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Is this page any help

http://www.dellorto.co.uk/merchandise/products.asp?CategoryID=2&PartsectionID=22


Edited by Monty, Jun 24 2013, 09:49 AM.
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Cuz
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God
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Just looked at one I've got easy access to and it's got a 268DR, needles K32
Edited by Cuz, Jun 24 2013, 05:31 PM.
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BK350
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Marquess
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@Monty:
Had a look on their site but unfortunately no info on the CCM carb, but found a very useful sheet of all the available needles with measurements.

@Cuz:
Had a call to the german importer this afternoon. First answer was "No, we don`t have any Infos for a CCM 604". Next I tried it with the exact carb type: PHM 40 ZS1.
The info was the following: atomiser 268DR, needle K35 (original setting from Dellorto). Dont know if CCM had supplied a different needle. I ordered the K32 and K35. So it seems, that I was running a badly modified carb. Now I remember that the idling was set with the slide when I bought my baby :whip: . Was an real expert, or am I :chin: ?

Cheers for the help and infos mates,

Chris
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BK350
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Marquess
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Just found this: Dellorto PHM 40ZS1 CCM 604

Its a site from France but you can click on the numbers and the original settings/jets are shown...

Chris
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