Author Topic: HDA 137 164 carbs  (Read 453 times)

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Offline Cut4fun

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Re: HDA 137 164 carbs
« Reply #10 on: January 27, 2015, 03:00:14 pm »
I guess I could take pics of the good 164 I have off and the new 137. 

Never paid attention to where any of the poulan carbs were made before till you brought that up Aaron.
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Offline Eccentric

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Re: HDA 137 164 carbs
« Reply #11 on: January 27, 2015, 03:15:08 pm »
These are the first Poulan carbs (other than Tillotsons) that I've seen marked with a manufacturing origin.
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.
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Offline Cut4fun .

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Re: HDA 137 164 carbs
« Reply #12 on: January 28, 2015, 01:10:48 pm »
Lets see if there is anything to the white plastic or black plastic impulse nipple used on the 137.    Wonder if you could tell where made by just looks of that or not.

What do the 2 137's you have for plastic color impulse?   

Just a WAG shot in the dark.
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Offline Eccentric

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Re: HDA 137 164 carbs
« Reply #13 on: January 28, 2015, 02:08:28 pm »
137 White on both IIRC.
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.

Offline Cut4fun .

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Re: HDA 137 164 carbs
« Reply #14 on: January 28, 2015, 02:39:13 pm »
137 Black on the one marked Japan
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Offline Cut4fun .

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Re: HDA 137 164 carbs
« Reply #15 on: January 29, 2015, 05:17:41 pm »
Just looked at a good 164 from a 3750 thats in a bin on my shelf.  Made in Mexico.
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Offline Cut4fun .

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Re: HDA 137 164 carbs
« Reply #16 on: January 30, 2015, 07:46:07 pm »
Looking at both today quickly, had to work on other headlight first.  grrr

See where that gov area would have been on both.  Also it appears the threads on idle screws are different. Must be why the part number difference.  Didnt have time to see if that was so though.

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Re: HDA 137 164 carbs
« Reply #17 on: January 11, 2018, 11:00:48 am »
Having troubles with my first HDA137 carb.    Wont fatten up on H side no matter how many turns out. 
Reading in service manual thinking some kind of blockage somewhere in it.  Havent tried ultrasonic cleaning yet.

Was comparing the H and L from the HDA164 and this 137 and the H was a tad different after the metering point. 

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Offline ChipsFlyin

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Re: HDA 137 164 carbs
« Reply #19 on: January 11, 2018, 12:04:22 pm »
I don't know if this helps or not. I had a 49 that could not get adjusted. After pulling the high needle and taking a closer look the very tip was broken off in the carb. The previous owner must have been doing a hulk imitation when adjusting the carb.
Mark

Poulan 2000, 2300 CVA, S25CVA, Craftsman 2.3 PS/VL (S25CVA), Craftsman 3.0/ Poulan 3000, Craftsman 3.3/ Poulan 3300 (2), Poulan 3450,  Poulan 3400, Wright 141A/401A,  Olympyk 284, Homelite Super XL 925,
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