SKU: 85377601486

491590 Carburetor - Fits B&S 491590 390811 392152 Carb 191700 192700 193700 Engine Series Vertical Engine

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Description

491590 Carburetor - Fits B&S 491590 390811 392152 Carb 191700 192700 193700 Engine Series Vertical Engine491590 Carburetor Tune Up Kit Key Features Optimized for 190000 Series: Precision jetted for 191700, 192700, and 193700 series vertical shaft engines, providing the correct fuel to air ratio for high torque lawn and garden applications. All In One Restoration: A comprehensive kit featuring a pre calibrated carburetor, high micron fuel filter, premium spark plug, and a high flow air filter for a total engine refresh. Precision Cast Alloy Body:

491590 Carburetor Tune-Up Kit

Key Features

  • Optimized for 190000 Series: Precision-jetted for 191700, 192700, and 193700 series vertical shaft engines, providing the correct fuel-to-air ratio for high-torque lawn and garden applications.
  • All-In-One Restoration: A comprehensive kit featuring a pre-calibrated carburetor, high-micron fuel filter, premium spark plug, and a high-flow air filter for a total engine refresh.
  • Precision-Cast Alloy Body: Manufactured from a high-density alloy to resist thermal expansion and warping, ensuring a consistent vacuum seal and stable idle speeds.
  • Manual Choke Integration: Designed for easy interface with factory choke and throttle linkages, allowing for smooth operation and reliable cold-weather starting.
  • Sediment-Resistant Design: Features an improved fuel bowl and needle valve assembly designed to resist the "gumming" effects of ethanol-blended fuels.

Replaces / Cross-Reference Part Numbers

  • Briggs & Stratton: 491590, 390811, 392152
  • Others: 491577, 391429, 390323

Compatibility & Fitment

This carburetor kit is a direct replacement for vintage and modern Briggs & Stratton vertical engines typically found on riding mowers and large walk-behinds. Key fitment includes:

  • Engine Series: 191700, 191701, 191702, 191707, 192701, 192702, 192707, 193701, 193702, 193707.
  • Equipment Types: Fits riding lawn tractors and heavy-duty walk-behind mowers from John Deere, Craftsman, Toro, and Murray utilizing the 190000 series engine platform.
  • Note: Verify your original carburetor shape, as some "L-Head" engines in this series use a different intake manifold configuration.

When to Replace

  • Engine "Hunts" or Surges: The engine RPM fluctuates wildly at a steady throttle position, indicating a clogged pilot jet or a vacuum leak at the gasket.
  • Starting Only on Fluid: The engine will only fire if starting fluid is sprayed into the intake, confirming the carburetor is not drawing fuel from the bowl.
  • Black Smoke / Fouled Plug: The engine runs "rich" and emits black smoke, suggesting the internal float is stuck or the main jet is restricted.
  • Fuel Leaks: Gasoline drips from the air filter housing or the bottom of the carburetor while the engine is off.
  • Backfiring: The engine pops or backfires through the intake when under load, often caused by a lean fuel mixture.

Installation Tips

  • Linkage Geometry: Use your phone to take a clear photo of the governor spring and throttle linkage setup before disassembly. These small springs are critical for correct engine speed control.
  • Gasket Surface Prep: Carefully scrape all old gasket material from the engine intake port. Even a tiny piece of leftover paper can cause an air leak that leads to surging.
  • Flush the Tank: If the old carburetor was clogged with "green" varnish, you must drain the gas tank and replace the fuel line with the included filter to prevent immediate contamination of the new unit.
  • Spark Plug Gap: Always check the gap on the included spark plug before installation (typically 0.030") to ensure optimal combustion.
  • Avoid Over-tightening: The carburetor body is made of soft alloy. Tighten the mounting bolts evenly but avoid excessive force to prevent cracking the intake flange.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 85377601486

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Ordered 3
Size: 44C, Color: Black
Great bra, pretty true to size, comfortable. Ordered one in fall and tried several other name brand underwire bras (lane bryant, Victoria Secret, Bali, Torrid, Hanes), returned most of them and came back for two more colors of this brand that I’d never heard of before. The material is nice, they fit well, I wash in cold on delicate and hang dry: so far so good. I normally take a 42C and went 44 for these. I think a 42 probably woulda been ok (I’m on the middle hook) but someone said they ran small. I’m not sure of that but keep it in mind if you’re maybe between sizes.
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Reviewed in the United States on May 21, 2026
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Dallas, US
★★★★★ 5
The BEST BRA for big bewbs!
Size: 36G, Color: Black
I've been a fan of Delimira for a while - it's hard to find a well made, comfortable, breathable bra for larger cup sizes at a price that doesn't require taking out a mortgage to afford it. I love this bra. It fits well, it's comfortable, it doesn't get hot, it seems really durable, and it's...sturdy. The underwire is not annoying, and while it's not the cutest bra, it's also not the most matronly bra I own. I have it in all three available colors and will 100% buy more colors should they ever release them.
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Reviewed in the United States on May 7, 2026
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Mandi Wilson
Bozeman, US
★★★★★ 3
Didn’t last for very long. Comfortable
Size: 42DD, Color: Beige
Comfortable bra. Good price but the wire popped out on one side after about 8 times of wearing it. Maybe it was the way I laundered it. It’s comfortable enough to want to order again and test that theory.
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Reviewed in the United States on March 25, 2026
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JB
Los Angeles, US
★★★★★ 5
Love love love this bra.
Size: 34E, Color: Beige
I dont really write reviews but really felt like I needed to hop on here and give one. I have a terrible time finding bras that fit (small frame and my boobs never shrunk back down after having kids). I was initially looking for a non-underwire bra and ordred a couple to try. Was annoyed when this came in having underwire but thought ok, well its here so may as well try it. Fit like a dream so I told myself, Ill wear it for an hour and see how I feel about it then. I totally forgot I was wearing it. It is SO comfortable. The back doesnt ride up, I dont have underboob, it breathes nicely, holds me up, straps dont dig in or fall down, and I dont feel a huge sense of relief after taking it off at the end of the day. Ive ordered two more and after a few weeks of wearing and washing a couple times, I still absolutely love it.
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Scott Gnixon
Lake Worth, US
★★★★★ 5
The PERFECT bra!
Size: 38D, Color: Barely Buff
I typically don't write reviews...but I just had to with this bra! I have not worn an underwire bra in years. I have had such a hard time finding something that is comfortable, supportive and does not allow for overflow. This bra is perfect! The material is soft and stretchy. It covers everything and does it comfortably! It also provides a perfect lift! The color is a perfect skin tone. Pretty sure I will be buying more!
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Reviewed in the United States on February 24, 2026

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