Author Topic: Poulan 3450 Carb issues  (Read 1081 times)

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Offline Cut4fun .

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Re: Poulan 3450 Carb issues
« Reply #70 on: August 19, 2015, 12:15:57 pm »
What saw did the HDA77 come from?  Did Mitch have to modify the carb or change parts for it to work on the 3450? 

@mweba

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Re: Poulan 3450 Carb issues
« Reply #71 on: August 19, 2015, 01:21:59 pm »
What saw did the HDA77 come from?  Did Mitch have to modify the carb or change parts for it to work on the 3450? 

@mweba



I went searching. Seems to be a 77a 77b 77-1 etc.   http://wem.walbro.com/walbro/product.asp?CategoryName=Titan+50&Series=HDA&partnum=HDA-77-1&GroupName=Chain%20Saw&FamilyName=MC%20CULLOCH

From Macs it looks like. 
MCCULLOCH Chain Saw
Carburetor HDA-77-1
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Re: Poulan 3450 Carb issues
« Reply #72 on: August 19, 2015, 01:24:58 pm »
mcculloch titan 57 chainsaw walbro HDA77 carburetor



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Re: Poulan 3450 Carb issues
« Reply #73 on: August 19, 2015, 01:54:18 pm »
Is hd77 any better than the 137 or 164?  Or is this the next best thing?  Just bought a 3500 with no carb :)

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Re: Poulan 3450 Carb issues
« Reply #74 on: August 19, 2015, 01:56:50 pm »
3500 you just need the oem 49 carb with small boot. 

I dont know why Mitch did the switch. Maybe had a problematic 164 carb  ???
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Re: Poulan 3450 Carb issues
« Reply #75 on: August 19, 2015, 07:52:01 pm »
-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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Re: Poulan 3450 Carb issues
« Reply #76 on: August 27, 2015, 02:47:06 pm »
What was it? Link not working for me.  I already had the other 3 figured out.

smaller hda 49 to the bigger hda 164 137

49 Venturi 12.7mm
164 Venturi 16.66mm
137 Venturi 16.61mm
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Re: Poulan 3450 Carb issues
« Reply #77 on: August 27, 2015, 07:55:47 pm »
What was it? Link not working for me.  I already had the other 3 figured out.

smaller hda 49 to the bigger hda 164 137

49 Venturi 12.7mm
164 Venturi 16.66mm
137 Venturi 16.61mm

HDA77 Venturi 15.8mm.
-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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