Manufacturer | Briggs & Stratton |
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Place of Business | Milton, ON L9T 5E9, CA |
Item model number | 31R907-0007-G1 |
Product Dimensions | 46.99 x 40.64 x 38.1 cm; 23.13 kg |
ASIN | B00IUAYGP2 |
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Briggs & Stratton 31R907-0007-G1 500cc 17.5 Gross HP Engine with 1" x 3-5/32" Length Crankshaft Tapped 7-16-20", Black
Brand | Briggs & Stratton |
Model name | Briggs and Stratton |
Voltage | 5 Volts |
Product Dimensions | 40.6W x 38.1H Centimetres |
Material | Cast Iron |
Item weight | 51 Pounds |
Manufacturer | Briggs & Stratton |
UPC | 047282017531 |
Global Trade Identification Number | 00047282017531 |
About this item
- Cast Iron Cylinder Sleeve and Dual Element Air Filter for Extended Engine Life
- Float Carburetor for Consistent, Easy Starting
- Patented Linear Balancing System Provides Smoother Performance
- Power Source Type: Gas Powered
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Product details
- Is discontinued by manufacturer : No
- Product Dimensions : 46.99 x 40.64 x 38.1 cm; 23.13 kg
- Date First Available : Aug. 7 2014
- Manufacturer : Briggs & Stratton
- Place of Business : Milton, ON L9T 5E9, CA
- ASIN : B00IUAYGP2
- Item model number : 31R907-0007-G1
- Âé¶¹Çø Rank: #243,997 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
- #2,035 in Agricultural Machinery Accessories
- Customer Reviews:
Product information
Technical Details
Additional Information
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Product description
This genuine 500cc Briggs and amp; Stratton single cylinder engine offers dependable power for your equipment needs. With a power rating of 17.5 horsepower, this engine features a premium Dual Clean air filtration system, electric starter, and maintenance-free Magnetron electronic ignition. With a manufacturer limited warranty of 2 years consumer use/1 year commercial use, Briggs and amp; Stratton provides power that you can trust. This engine includes a Dura-Bore cast iron cylinder sleeve for extended life. This engine includes an installed muffler. This engine includes a 9 amp charging system.
From the manufacturer

Repowering your equipment with Briggs & Stratton
Briggs & Stratton engines are the perfect small engines to power the equipment you use to maintain your home and yard, like a garden tiller, log splitter, pressure washer, water pump or portable generator. Count on our versatile and durable utility engines to perform consistently and start easily, no matter how tough the job.
Engine Selection
Match the engine¡¯s performance and cost to your specific application to get the optimum performance. That means better value for you.
- Vanguard OHV (overhead valve) engines are maximum performance, cast iron sleeved engines. Select for continuous heavy duty applications.
- Professional Series, Commercial Series (Industrial/Commercial) engines are cast iron sleeved. Select for medium duty commercial, industrial and rental use.
- Intek and Powerbuilt engines are aluminum cylinder bore OHV engines. Select for general consumer use.
- Standard engines are aluminum cylinder bore, side valve engines. Select for general consumer use.
Engine Installation
It is important to maintain the original engine¡¯s size, starter type and position, fuel tank location, fuel line routing, muffler location, exhaust direction and muffler accessories (i.e., deflector, spark arrester, etc.). Reinstall all guards, shields and safety devices. Replace missing, worn or damaged parts.
Vertical Crankshaft Engines
Compare the overall engine size to avoid possible mounting interference.
- Match the crankshaft
- A - Diameter
- B - Height (distance from base to crankshaft center line)
- C - Length (distance from oil seal/cover¡¯s mounting face to end of crankshaft)
- Match the crankshaft type, i.e., keyway, tapered or threaded
- Match the crankcase cover¡¯s tapped holes for mounting accessories (if applicable)
- Match the base mounting dimensions and bolt hole spacing
Engine Maintenance
Regular lawn mower maintenance helps prevent problems, plus lengthens the life of your lawn equipment. But even with plenty of TLC, normal wear and tear from hours of mowing the lawn increases the chances of hitting a glitch from time to time. We recommend using our maintenance kits to ensure your engine is running smoothly all season long.

Engine Replacement Assistance
If you are unsure which replacement engine can be used for your equipment, or would like to know if you can upgrade your existing engine, please feel free to ask questions by contacting Briggs & Stratton for assistants. Information Needed for Engine Replacement Assistance:In order to assist you with locating a replacement engine and short block, include as many engine specifications as you can:
- If replacing a Briggs & Stratton manufactured engine, provide the engine's complete, Stamped Engine Model, Type, and Code numbers.
- If not a Briggs & Stratton manufactured engine, provide the engine brand, power rating, and model number. (ex. Tecumseh 10 HP Model HMSK 22-22222d).
- Equipment information including brand name, type and model numbers (ex. John Deere Model 316 lawn tractor).
Top Brand: Briggs & Stratton
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Customer reviews
Top reviews from Canada
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- Reviewed in Canada on September 1, 2023Verified Purchaseworks as it should installed a few days ago used it once seems great
- Reviewed in Canada on July 26, 2023Verified PurchaseEasy to replace this motor on the mower.
- Reviewed in Canada on January 25, 2022Verified PurchaseReceived by delivery in good shape. Have not had a chance to run it yet, but expect no surprises. Only 3 wires to hook up and starter connection to a solenoid. No instructions with that but should not be too hard to figure out.
- Reviewed in Canada on November 18, 2022Verified PurchaseReplaced a 15.5hp that threw a rod with this 17.5hp in a MTD riding mower 4yrs ago and it¡¯s still running strong
- Reviewed in Canada on November 3, 2021Verified PurchaseEngine said it was in stock but took a month and a week to ship. otherwise it is as described and works great.
- Reviewed in Canada on November 6, 2021Verified PurchaseGreat deal for the motor but took over 2 months to ship!!
- Reviewed in Canada on March 31, 2022Verified PurchaseFit in JD lawnmower was good.
- Reviewed in Canada on August 7, 2021Verified PurchaseFit perfect. Took a bit to figure of the wiring
Top reviews from other countries
- Brandon PotvinReviewed in the United States on May 18, 2025
5.0 out of 5 stars So far so good
Verified PurchaseOrdered this engine as a replacement. I had a 15.5 Hp engine in my lawn mower before this one's a few more Hp. Install was pretty easy. Disconnect all the electrical.
Take out the center bolt on pulley after taking your belts off. Slide the pulley off.
There are four bolts holding the engine in place. These are self-tapping bolts. You do not need to tap the holes on the new engine.
Pull off old engine, put new engine in place. Line up holes.
Take manufacturer bolts. Put it into the hole with an impact gun and just have at it. The bolts are hardened steel & will cut into the soft metal. They do not need to be tapped beforehand.
Make sure the key is either on the new engine or in the pulley slide that onto the new engine put bolt in. (At this time you need to add oil add minimum 1 quart)
The connector or wires that went to your ignition solenoid from your old engine. Just hook up the wires from color. Mine were black and gray, I had to do some modification to the wires. Put waterproof crimps on the wires with heat shrink.
Took the end off the yellow wire connected the yellow wire off the rectifier to the red wire coming from my engine harness. That's what powered my battery.
Before installing the belts and hooking up the fuel, try just cranking the engine over a few times to get the oil splashing around through the engine. Then you can hook up the fuel and hook up your belts and start it up. (AT 5 HOURS OF RUN TIME NEED TO CHANGE OIL IN ENGINE SINCE IT DOES NOT HAVE A FILTER MANUFACTURER RECOMMENDS) After that you can change the oil once a year. Good mowing.
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Âé¶¹Çø ¥«¥¹¥¿¥Þ©`Reviewed in Japan on May 3, 2023
5.0 out of 5 stars ¥Ï¥¹¥¯¥Ð©`¥Ê¡¡¥é¥¤¥À©`£±£¶£Ã¡¡£±£µÂíÁ¦¥¨¥ó¥¸¥ó¤Î½»»»ÓäËÂò¤¤¤Þ¤·¤¿¡¡
Verified Purchase¥Õ¥í¥ê¥À?£Õ£Ó£Á¤«¤é½ì¤¤Þ¤·¤¿¡¡¿ÕÊ䡢˰évͨ¹ý¤Ê¤Éϸ¤«¤¯¶Ù±á³¢¥µ¥¤¥ÈÊäËÍÈ·ÈϤǤ¤Þ¤·¤¿¡¡×¢ÎĤ«¤é£±£°Èդǥ¨¥ó¥¸¥óÔØ¤»Ì椨ÍêÁˤ·¤Þ¤·¤¿¡£
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Reviewed in Japan on May 3, 2023
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- Kindle CustomerReviewed in the United States on May 17, 2025
5.0 out of 5 stars Great Motor!!!
Verified PurchaseNice engine, installed on toro time cutter SS4225 bolted right up. I did have to tap out the new mounting holes on the new motor. Does not have oil filter or fuel pump. Designed for gravity feed tank . Great value for what I needed thank you!! Box arrived no Damage
- M. LittleReviewed in the United States on November 26, 2023
5.0 out of 5 stars REPLACE or REPAIR
Verified PurchaseI am a do-it yourselfer and have a 2017 Troy-Bilt Pony that originally had a Briggs & Stratton 17.5 Power Built Engine after 6+ years of use and just after replacing the 42" Deck completely, the compression relief valve decided to break preventing the engine to start. So, I was faced with attempting to make that engine repair, (internally) for a new compression relief valve part (priced at $200 for the kit only), plus my time and risk finding additional internal damage to other internal parts or replace the engine entirely. After looking at the cost at new riding lawn mowers, plus the fact I already replaced the deck I opted to replace the engine. This Briggs & Stratton 31R907-0007-G1 500cc 17.5 Gross HP Engine installation was easy, providing you take your time and review YouTube videos prior to starting the job. I suggest you pre-tap the mounting holes with a 3/8 x 16 tap in order to reuse the self-tapping mounting screws. I had to use a utility propane torch to break the hold loose on the crank. I removed / re-used my original exhaust. Engine removal was easy, take photos of fuel lines, linkage and wiring just in case. New engine lined up and bolted right up. Had to remove the new muffler (1/4" Allen). Wire harness took some study. In my case I swapped out the wire harness for the fuel solenoid with my old harness so that the gray and black wire from the fuel solenoid and the black wire from the ignition coil would easily connect to my original connector. I clipped and re-used the connector from the red and black wire from the stator alternator to connect to the voltage regulator, red wire to red wire from voltage regulator and attached the black wire to the black ground wire on the voltage regulator. Did not have to do anything with the yellow wire. Attached battery (hot - red) cable to starter. Added 44 oz. of Briggs & Stratton HD30 Oil to filler tube. I kept my old dip stick because I liked the yellow color cap. Turned the key and it fired right up. Hopped on any mulched the leaves. No adjustments to the carburetor or linkage were required. Took me overall 8 hours by myself, (cautiously). Glad I did it. If your mower is over 6+ years old and the deck and transmission are in good shape I recommend swapping the engine. I also recommend that you consider replacing the upper and lower transmission drive belts if needed. Also suggest you also take apart and clean the steering linkage / gears while the engine is off. Hope this review helps.
M. LittleREPLACE or REPAIR
Reviewed in the United States on November 26, 2023
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