Question about Poulan Pro 42CC 2 Cycle Chainsaw, 18"

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I cant find a replacement air filter locally, can i use the foam one instead?

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Liu Peter

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Air filter's function is to protect dust going to the carburettor, so I think similar material will work ! (make sure do not effect the air flow)

Posted on Sep 23, 2011


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1986 honda 70 runs great with air box open, I cant find any restrictions behind air box, what am I missing, does the spark arestor have anything to do with this?

There is no question, but sounds like it doesn't run with air box closed. It isn't getting enough air and that is usually caused by someone saturating the foam that covers the filter by too much oil. Remove filter thoroughly clean it, wash the foam with gas, let dry and then lightly coat foam with spray WD-40 instead of pouring motor oil on it.

Oct 04, 2018 | Honda Motorcycles

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Power washer runs until air filter is put back on

Have you replaced the air filter? Without the air filter the engine is getting enough oxygen to support combustion. With the air filter it does not get enough oxygen. If you have not replaced the filter it sounds like it is time to replace it. If you have been "cleaning" the old filter and reusing it, small particles may be lodged in the filter, reducing the airflow. Is it a pleated paper filter or a oil dipped foam filter. If it is a foam filter, have you cleaned it? If you replaced it was it a store replacement or a piece of foam you obtained and made it fit? Foam can be closed cell or open cell , both look similar but closed does not allow airflow and open does .

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1 Answer

If the filter is clogged would it quit working

Hi there! If the filter is clogged this will cause the vacuum to lose suction and possibly shut-off. Below are instructions to checking and cleaning your filters.

1. Remove the dirt cup. Twist off the dirt cup lid.
2. Remove the filter cartridge from dirt cup.
3. Separate the foam and cartridge filters. Wash foam filter under running. Allow 24 hours to air dry outside the vacuum.
4. Tap the excess dirt out of Hepa filter. Hepa filter may also be washed. Allow 24 hours to air dry.
5. Check the secondary filter by removing the filter cover from base. Rinse the foam filter under running water until it runs clear. Allow 24 hours to air dry.
6. The red baffle tube inside of the dirt cup is apart of the filtration of the vacuum and needs to be cleaned as well. Twist out the baffle tube by turning 1/4 turn clockwise. Remove any hair or debris wrapped around baffle tube. Baffle tube can be rinsed if needed. Allow to dry thoroughly.

If the filters are too dirty they may need to be replaced. With regular maintenance the filters should be replaced about once a year. Follow the links below to order replacement filters for your UH20020.

Primary Filter
Exhaust Foam Filter

Hope this helps!

Jun 12, 2014 | Hoover Nano Cyclonic Compact Bagless...

1 Answer

Conti Vacuum Cleaner Aquarobot CTI-200 1800W manual

the foam filter for a Conti Aquarobot 1800w vacuum cleaner is unavailable. Can I use ordinary foam instead? Is the foam filter permanent or replaceable ?

Jan 27, 2014 | Kitchen Appliances - Others

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Hi My Hoover wind tunnel cyclonic stopped working when i was using it. I tried different plug even then it doesnt work . What to do??

If the motor stopped running, it most likely did because it was not being cooled, becuause something was stopping up the air flow. If you have cleaned the secondary filter out and it still stops while running, then remove the exhaust filter cartridge and try it then. If it does not stop running now, then the problem is the previous models like this had a foam filter as the exhaust filter, not a heppa cartridge filter. You will not hurt the machine by running it without the heppa cartridge. Cut a foam filter to fit to replace it. I do not think Hoover knows this yet.

I have a customer working on this problem today (Sept 2010) I have repaired machines for 30 years. This filter is meant to just catch the tiny particles from getting back into the air. However, it worked fine on the previous machines with the foam filter here instead of this Heppa cartridge.

Dave in Texas

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1 Answer

Step by step air filter replacement?

Remove seat, two bolts at rear...
unscrew wing bolt located in the middle of the air filter element
remove filter, and clean the mating area in the air box (WD-40 works well) Make sure not to get any dirt in here!!!
Remove the inner air filter cage, Clean the air filter (Stock ones are foam) I use kerosene or gas, but be careful, wash it then with soapy water and let it dry completely.
Use a foam filter oil, either spray on or in a bottle, and make sure it's covered completely, and tacky, not soaked. (I use Bel-Ray foam filter oil) Replace the air filter cage
Put a small bead of grease on the filter where it mates to the air box, this helps it seal.
Re-install air filter and seat, I use a little bit of lock-tite on the seat bolts, as they vibrate out.

Mar 20, 2010 | 2004 Yamaha YZ 450 F

1 Answer

Foam air filter needs replacing. It

I'm not sure what your question is, but you need to replace the air filter and in the future, don't clean the foam filter in gasoline. They will deteriorate with time, but gas will speed up that process. Wash it in dishwashing detergent next time.

Jul 13, 2009 | Homelite Garden

1 Answer

The dirt is going into the filter

As the air gets sucked through the vacuum cleaner, the dirt is basically thrown out into the container by the spinning air. If the speed that the air is travelling through gets too low, this stops happening and instead it gets sucked through into the filters.

There could be a number of reasons that the air flow has slowed. The most likely is the filters have become blocked over time. Even with regular washing, after 5 years they will not be as efficient as when they were new. I would suggest replacing them (the foam filter and HEPA filter if you have one.)

I would also check that there are no blockages in the main hose, and also give all the component a good banging/brushing to make sure they are nice and clean.

hope this helps,


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Foam filter fabric

Yes you can buy it in hardware, just cut it to fit in the frame.

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Finding replacement filters

You can actually use the size B....made by Holmes...Also C for the carbon filters

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