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Author Topic: Differences in the high speed check valve/nozzle.  (Read 3598 times)

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Offline jmester

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Differences in the high speed check valve/nozzle.
« on: December 25, 2017, 07:50:28 am »
What are the differences in the check valve/nozzles for a carb that is the same model but set up for a different brand of saw. Tillotson HS 320 (363-626) Stihl 066/660 to Tillotson HS 294 (363-598)Dolmar PS9010. Check valve part number in parentheses.
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Offline farmboy

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Re: Differences in the high speed check valve/nozzle.
« Reply #1 on: December 25, 2017, 10:36:21 pm »
My guess is metering hole size.  I would think the 320 would have a larger metering hole for more fuel.  I would think they could be swapped.
Shep
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Offline jmester

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Re: Differences in the high speed check valve/nozzle.
« Reply #2 on: January 07, 2018, 08:12:37 pm »
That makes sense to me. The nozzles should be the same o.d. As they are for an HS series carb.
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