What a Conway air filter does and where to find yours
A Conway air filter is the component that stops dust, pollen, and debris from entering your engine. If you own a Conway brand small engine — typically found in lawn mowers, generators, or pressure washers — the air filter sits between the outside air and the carburetor, and it needs regular inspection and replacement to keep your engine running smoothly.
The location varies slightly by model, but on most Conway equipment the air filter housing is a plastic or metal box mounted on top of or to the side of the engine. You can usually spot it by looking for a large cylindrical or rectangular container with a lid or cover that clips or bolts on. Once you locate the housing, you can open it to see whether the filter inside is clogged with dirt or still serviceable.
Checking your Conway air filter takes less than five minutes and requires no special tools beyond a screwdriver or wrench to remove the housing cover. Most owners find the filter during routine maintenance and discover it needs replacement far sooner than they expected — especially if the equipment runs in dusty conditions like mowing dry grass or running in sandy soil.
Key Takeaways
- Conway air filters are cylindrical or rectangular foam or paper elements located in a housing on top of or beside the engine.
- A clogged filter reduces engine power, increases fuel consumption, and can cause hard starting or stalling.
- Replacement filters are sold by part number, which you can find on the original filter itself or in your equipment manual.
- Most Conway air filters cost between $8 and $25 and take five to ten minutes to swap out without tools or with only a screwdriver.
- Foam filters can be cleaned and reused; paper filters must be replaced when clogged.
How to identify a clogged Conway air filter
A clogged air filter shows itself through engine behavior before you even open the housing. If your Conway mower, generator, or pressure washer is harder to start than usual, loses power under load, or stalls when you try to use it, a dirty filter is often the culprit. The engine is starved for air and cannot burn fuel efficiently.
To confirm, remove the housing cover and look at the filter element itself. A clean filter is light tan or white. A clogged one is dark gray or black with visible dust packed into the foam or paper. If you hold it up to light and cannot see through it, it needs replacement. Even if it looks only moderately dirty, if your equipment has been running poorly, replacing it is usually the fastest way to restore performance.
The timeframe for replacement depends on your environment. Equipment used in dry, dusty conditions may need a new filter every 25 to 50 hours of operation. Equipment used in clean conditions might go 100 hours or more. Check your manual for the manufacturer's recommendation, but do not wait for the manual interval if the filter is visibly clogged.
Finding the correct replacement filter by part number
Conway air filters are sold by part number, and using the correct one matters because filters are sized to fit specific engine models. The part number is printed on the filter itself — look on the side or top of the element. Write down that number before you go to a parts supplier or search online.
If you cannot find the number on the old filter, check your equipment manual or the model plate on the engine. The manual will list the air filter part number in the maintenance or parts section. Once you have the number, you can order the replacement from an online retailer, a lawn equipment dealer, or a general hardware store that stocks small engine parts.
Conway filters are also sometimes sold under the names of the retailers or distributors that carry them, so if you search by part number and find nothing under the Conway brand, try searching the number alone. You will usually find the same filter listed under multiple brand names at different prices.
Replacing a foam air filter
Foam filters are common on smaller Conway engines and have an advantage: they can be cleaned and reused several times before replacement. To remove the old filter, unclip or unbolt the housing cover and slide the foam element out. Tap it gently against a hard surface to dislodge loose dirt.
Wash the foam in warm soapy water, squeeze it gently (do not wring it), and let it air dry completely before reinstalling. Once dry, slide it back into the housing, replace the cover, and find it. If the foam is torn, compressed, or does not spring back when squeezed, replace it with a new one instead of reusing it.
Some owners explore a light coat of foam filter oil to a clean, dry foam filter before reinstalling it. This helps trap smaller dust particles. Check your manual to see whether your Conway engine recommends this step — not all do.
Replacing a paper air filter
Paper filters cannot be cleaned and reused. Once clogged, they must be thrown away and replaced. Remove the housing cover and slide out the old paper element. Note how it sits in the housing — the new one goes in the same way, usually with a rubber seal or gasket at the top or bottom.
Slide the new filter into place, making sure it seats fully in the housing so no air can bypass it around the edges. Replace the cover and find it with clips or bolts. Do not overtighten bolts; snug is enough.
Paper filters are less expensive than foam filters but need more frequent replacement in dusty conditions. They are also more fragile during installation — avoid crushing the pleats or tearing the paper when you slide it into the housing.
What happens if you run your Conway engine without an air filter
Running without an air filter is tempting when the filter is clogged and you need the equipment to work right now. Do not do it. Unfiltered air carries dust and pollen directly into the carburetor and engine. Within hours of operation, this debris can clog the carburetor jets, foul the spark plug, and score the cylinder walls.
Damage from running unfiltered can cost $100 to $300 in repairs — far more than the $10 to $25 cost of a replacement filter. The engine may also overheat because dust blocks cooling fins. If your filter is clogged and you do not have a replacement on hand, stop using the equipment until you can install a new one.
Storing and maintaining your Conway air filter between uses
If your Conway equipment sits unused for weeks or months, the air filter can still collect dust and moisture. Before storing the equipment, inspect the filter and clean or replace it if needed. A clogged filter left in place can trap moisture, which corrodes the carburetor and fuel lines over the off-season.
Store the equipment in a dry place, and if you remove the air filter for storage, cover the opening with a clean cloth to keep debris out. When you restart the equipment after storage, check the filter again before running it. Seasonal equipment like snow blowers and pressure washers benefit from a fresh filter at the start of each season.
Frequently Asked Questions
Can I clean a paper air filter instead of replacing it?
No. Paper filters are designed to trap particles inside the fibers and cannot be cleaned without damaging them. Foam filters can be washed and reused; paper filters must be replaced. Trying to clean a paper filter by blowing compressed air through it or rinsing it will tear the material and reduce its effectiveness.
How often should I check my Conway air filter?
Check it every 25 to 50 hours of operation, or at the start of each season if the equipment is used seasonally. If you use the equipment in very dusty conditions, check it more often. A quick visual inspection takes less than a minute and can prevent engine damage from running clogged.
What if I cannot find the part number on my old filter?
Look in your equipment manual under the maintenance or parts section — the air filter part number is usually listed there. If you do not have the manual, note your equipment model number and contact a Conway dealer or the manufacturer directly. They can tell you the correct filter for your specific engine.
Is it worth cleaning and reusing a foam filter, or should I just replace it?
Cleaning and reusing a foam filter saves money and works well if the foam is still intact and springs back when squeezed. Replace it if it is torn, permanently compressed, or smells like fuel or oil. Most owners find they can reuse a foam filter two to four times before replacement becomes necessary.
Will a clogged air filter cause my Conway engine not to start?
Yes, a severely clogged filter can make starting difficult or impossible because the engine cannot draw enough air to ignite the fuel mixture. If your equipment is hard to start and you have not checked the filter recently, that is the first place to look. A new or cleaned filter often restores normal starting when ready.