Poulan Pro 442 Backpack Blower Carburetor

[Jbassman]

Hey guys.
have a Poulan Pro 442 backpack blower bought second hand which starts then dies. Atrempting to give it gas does nothing. Tried cleaning the carb but still same issue.
Probably easiest to replace the carburetor (at least for me) but having a hard time finding a replacement for it. Anyone know? It says Walbro 21-245 7-2 can’t find anything online. Thanks in advance.

 

[StarTech]

Those numbers are not the Walbro model number. Look around on the cube for other numbers.

 

[ILENGINE]

I think that is the first diagram that I have found that doesn't give the part number for the complete carb. Only individual parts. Anyway.. On Walbro the model number of the carb will be etched into the upper left corner of the carb cube. On one side or the other It may start with WT or something similar.

 

[StarTech]

I think that is the first diagram that I have found that doesn't give the part number for the complete carb. Only individual parts. Anyway.. On Walbro the model number of the carb will be etched into the upper left corner of the carb cube. On one side or the other It may start with WT or something similar.

It is the first I have seen that too. Most times they only give their pn for the whole carburetor. It appears to be one of the Walbro HDA versions. Most of the pns are Kawasaki ones.

 

[ILENGINE]

It is the first I have seen that too. Most times they only give their pn for the whole carburetor. It appears to be one of the Walbro HDA versions. Most of the pns are Kawasaki ones.

I grabbed a couple part numbers from the carb diagram and they showed HOP numbers but also showed NLA.

 

[bertsmobile1]

IF the tank does not vent and hold pressure it will not matter how many new carburettors you fit , the blower will not run
I replace far more faulty fuel caps than I do bad carbs

 

[StarTech]

Those numbers are not the Walbro model number. Look around on the cube for other numbers.

I was primarily looking at the gaskets. Say the metering diaphragm showing Husqvarna 430282072 which is Kawasaki 43028-2072.

Actually many of the pns directly translate to the carburetor on the Kawasaki TE040D-AC52. Not all but most of them and that carburetor is a HDA-110A. Now of course the OP's PP442 has a primer setup which the TE040D-AC52 carburetor does not.

 

[StarTech]

IF the tank does not vent and hold pressure it will not matter how many new carburettors you fit , the blower will not run
I replace far more faulty fuel caps than I do bad carbs

I have right the opposite problem here which I rebuild a lot more cubes than I find bad fuel tank vents. Actually I think I have only found one in the last 5 years.

 

[Jbassman]

Someone mentioned HDA earlier and they were correct. I believe it says 138A
Does that help?

 

[Jbassman]

IF the tank does not vent and hold pressure it will not matter how many new carburettors you fit , the blower will not run
I replace far more faulty fuel caps than I do bad carbs

How can I tell if it is properly venting?