Quick answer
Our overall pick is the SQ 12-pack, which lists use on lawn mowers and two-stroke engines and states it is fully made in the USA. The CRC can suits owners who need a single treatment with a 50-state formula, while the Gumout two-pack suits anyone who wants a jet spray for unpainted metal parts.
If you are looking for a carburetor cleaner for lawn mower use, these five listings are a useful starting point. Carburetor cleaners are made for gas engines, so this roundup applies to gas-powered mowers and other small engines. Electric mowers have no carburetor, so check the owner’s manual for your machine before buying or using any product.
Each product below is described using only the features and specifications on its Amazon listing. Read the label and manufacturer instructions before use, especially where a listing describes a product as highly flammable.
Quick picks
- Multi-pack for mowers and two-stroke engines: SQ Carburetor Cleaner 12-Pack (see on Amazon)
- Single can with a 50-state formula: CRC Clean-R-Carb 50 State Formula (see on Amazon)
- Jet spray for unpainted metal parts: Gumout 540269 Carb & Choke Jet Spray (see on Amazon)
- Large case of 16 oz cans: Berryman B-12 Carburetor Cleaner 16 oz (see on Amazon)
5 Best Carburetor Cleaner for Lawn Mower compared
| # | Product | Best for | Size | Number of items | Made in USA |
|---|---|---|---|---|---|
| 1 | SQ Carburetor Cleaner 12-Pack | Best overall: 12-pack for mowers and two-stroke engines | 12.5 fl oz per bottle, 12-pack | 12 | Listed: fully made in the USA |
| 2 | CRC Clean-R-Carb 50 State Formula | Best for emissions-part cleaning with a 50-state formula | 12 oz | 1 | Not listed |
| 3 | Gumout 540269 Carb & Choke Jet Spray | Best jet spray for unpainted metal parts | 14 fl oz per can, 2-pack | 2 | Listed: made in the USA |
| 4 | Berryman B-12 Carburetor Cleaner 16 oz | Best 16 oz, 12-can case | 16 oz per can, 12-pack | 12 | Listed: made in the USA since 1918 |
| 5 | Johnsen’s 4642-12PK Carburetor Cleaner | Best VOC-compliant 16.25 oz case | 16.25 fl oz per can, 12-pack | 12 | Not listed |
How we chose
We compared manufacturer listings and specifications on Amazon as of November 2026. We did not test any of these products by hand; our picks come from reading what each listing states.
The criteria were the features each listing actually states, including pack size and item count, named uses such as small engines or two-stroke engines, notes on VOC compliance and catalytic converter or oxygen sensor safety, and made-in-USA statements. Where a listed weight did not fit the stated size and count, we left that detail out.
5 Best Carburetor Cleaner for Lawn Mower: our picks in detail
1. Best overall: 12-pack for mowers and two-stroke engines: SQ Carburetor Cleaner 12-Pack
Pros
- 12-pack of 12.5 fl oz bottles
- Listed for lawn mowers and two-stroke engines
- Non-chlorinated and leaves no residue
- Fully made in the USA
Cons
- Listed as highly flammable
- Not for sale in several listed states
- Listing does not mention catalytic converter or oxygen sensor safety
The SQ carburetor cleaner comes as a 12-pack of 12.5 fluid ounce bottles. The listing describes it as a non-chlorinated carburetor and choke cleaner that is highly flammable and leaves no residue. It also calls it an engine starter for lawn mowers and two-stroke engines, and states that it is fully made in the USA.
The listing says it is not for sale in several states, including CA, NY and OH, so check the restriction before ordering. Because the product is labeled highly flammable, follow the manufacturer’s manual for storage and use.
Best for: Owners of gas lawn mowers or two-stroke equipment who want a full case of cleaner and a made-in-USA product.
2. Best for emissions-part cleaning with a 50-state formula: CRC Clean-R-Carb 50 State Formula
Pros
- Labeled 50-state formula
- Listed as harmless to catalytic converters and oxygen sensors
- Covers venturi, linkages, butterflies and PCV systems
Cons
- Single 12 oz can only
- Listing does not mention a multi-pack option
- Listing does not say whether it is made in the USA
The CRC Clean-R-Carb is a 12 ounce can labeled as a 50-state formula, which the listing says meets all state and federal VOC regulations. It is described as dissolving deposits on the venturi, linkages, butterflies and PCV systems, and as harmless to catalytic converters and oxygen sensors. The listing calls it a carb and choke cleaner designed to maximize carburetor performance.
This is a single can, so it suits owners who need one treatment rather than a case. The listing does not mention a multi-pack option or say whether the product is made in the USA.
Best for: Anyone who needs one can for carburetor and PCV cleaning and wants the 50-state formula called out on the label.
3. Best jet spray for unpainted metal parts: Gumout 540269 Carb & Choke Jet Spray
Pros
- Jet spray listed for unpainted metal parts
- Two 14 fl oz cans
- Listed for small engines and multiple parts
- Made in USA per listing
Cons
- Two-can pack, not a case
- Safety claims apply only when used as directed
- Listing does not mention electric mower use
The Gumout 540269 comes as two 14 fluid ounce cans and uses a jet spray that the listing says quickly removes gum, varnish, carbon, oil, grease and dirt from the carburetor. The listing also says it cleans all unpainted metal parts, such as brake pads and rotors, and leaves no residue. It is listed for carbs, linkages, chokes, PCV valves and manifold heat controls.
The listing says Gumout has been cleaning since 1941, that the product is made in the USA of foreign and US components, and that the formula is 50-state VOC compliant and oxygen sensor and catalytic converter safe when used as directed. It is also listed for small engines, chainsaws and pressure washers.
Best for: Owners who want a jet spray and plan to clean carburetor parts plus other unpainted metal parts listed on the label.
4. Best 16 oz, 12-can case: Berryman B-12 Carburetor Cleaner 16 oz
Pros
- Case of twelve 16 oz cans
- Non-chlorinated, no-residue formula
- Listed as safe for oxygen sensors and catalytic converters
- Made in USA since 1918 per listing
Cons
- Listing is written for automotive use
- Listing does not mention lawn mower use
- Listed weight appears inconsistent with the case size
The Berryman B-12 comes as a case of twelve 16 ounce aerosol cans. The listing describes it as removing gum, varnish, sludge and carbon deposits from carburetors, chokes and throttle bodies, and says it can be used without disassembly. It is a non-chlorinated, fast-drying formula with no sticky residue, and the listing says it is safe for oxygen sensors and catalytic converters.
The listing states that Berryman has been made in the USA since 1918. It is written around automotive use, so check your manual to confirm that the product fits your mower’s engine before using it.
Best for: Buyers who want a large case of 16 ounce cans and are comfortable with a listing written for automotive use.
5. Best VOC-compliant 16.25 oz case: Johnsen’s 4642-12PK Carburetor Cleaner
Pros
- Case of twelve 16.25 fl oz cans
- Labeled VOC compliant
- Gray color listed
Cons
- Listing gives few cleaning details
- Lists marine personal craft compatibility, not lawn mower use
- Listing does not mention made in USA
The Johnsen’s 4642-12PK is a case of twelve 16.25 fluid ounce cans sold as a VOC compliant carburetor cleaner spray. The listing describes the product as gray and lists compatibility with marine personal craft. Its listed features are limited to a flash point, a package weight and package dimensions.
Because the listing gives few details about cleaning uses, read the product label closely. The listing does not say whether the product is made in the USA, and it does not mention lawn mower use.
Best for: Buyers who need a 12-can case labeled VOC compliant and are prepared to confirm the uses on the label themselves.
How to choose a carburetor cleaner for lawn mower use
Carburetor cleaners are made for gas engines that have a carburetor. Electric mowers, whether corded or cordless, do not have one, so a carburetor cleaner has no role on those machines. If you are unsure which type you own, check the owner’s manual or our overview of mower power sources before buying.
Read the listing and label for the uses it names. Some products are listed for small engines and two-stroke engines, while others are written for cars, trucks and throttle bodies. A product built for vehicles may not list lawn mower use at all, so confirm the fit before you buy.
Pay attention to flammability and storage. Several listings describe their products as highly flammable. Follow the manufacturer’s manual for storage and use, and keep containers away from heat and open flame. If you also store fuel for your mower, our guide to gas cans for mowers covers container options.
Labels about emissions rules also differ. Some listings mention VOC compliance or a 50-state formula. For background on how emission standards work, see the EPA emission standards reference guide. Keep in mind that a label statement describes the manufacturer’s claim, not a guarantee for your particular engine.
If you own an electric mower, your time is better spent on routine care. Our electric lawn mower maintenance checklist covers the upkeep that applies to those machines.
What to look for
- Confirm the listing names lawn mower or small engine use before buying.
- Check the pack size and item count against how much you need.
- Read the flammability and storage notes and follow the manufacturer’s manual.
- Look for VOC compliance or catalytic converter and oxygen sensor notes if your engine has those parts.
- Check for a made-in-USA statement if that matters to you.
FAQ
Does an electric lawn mower need carburetor cleaner?
No. Electric mowers do not have a carburetor, so carburetor cleaner does not apply to them. Check your manual to confirm what your mower uses, and see our guide to corded vs cordless electric lawn mowers if you are still deciding.
Are these cleaners safe for catalytic converters and oxygen sensors?
Several listings say their products are harmless or safe for those parts when used as directed. Those are manufacturer statements. Follow the label and your engine manual, and do not assume a claim covers every part.
Why do some listings focus on vehicles?
Some carburetor cleaners are written for cars, trucks and motorcycles. Look for lawn mower or small engine use named on the listing before you buy for your mower.
How can I check for product recalls?
You can search the CPSC recalls page for any product you are considering.
References
- Amazon product listings and manufacturer specifications (accessed November 2026)
- EPA Emission Standards Reference Guide
- U.S. Consumer Product Safety Commission, Recalls
