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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4.9 ★★★★★
Based on 19 reviews
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YL
Whiting, US
★★★★★ 1
Cotton Fluff Around a Mostly Empty Bag
Size: King (Pack of 1), Style: High Loft (6"-7")
Bought the high-loft king, thinking it would be a great (tall) side-sleeper. What I got? A very nice, completely compressible cotton outer shell wrapped around a bag a bit smaller than a standard pillow. In that bag? A tiny amount of small latex chunks, just about a third full. That’s right, some cotton fluff around a basically empty bag. Could you buy some latex yourself and add it? No, the bag is sewn shut. You could probably fill a small pillow with latex you bought elsewhere and put that in. But seriously, what did you pay Saatva for in that case? Probably as close as I’ve seen a major/high-reputation company get towards a literal example of rip off.
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Reviewed in the United States on May 31, 2026
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Verified Purchase
Perry Baker
Lake Worth, US
★★★★★ 3
Wrong item ships/decent pillow/price unjustified
Size: Standard/Queen (Pack of 1), Style: Standard Loft (4" - 5")
Sent me the wrong pillow twice in a row. It said high loft and standard loft on the packing, not sure what the problem is. I ordered standard loft both times, and both times they sent high loft. That name is very deceiving though. If what I have is high loft, the standard loft wouldn’t be much thicker than your standard flat down pillow. If you’d like any sort of neck support I’d suggest starting with the high loft and going down instead of the other way around. I am 5’ 7” 130lbs and this pillow does not lift my neck up further than neutral, which is a good thing. Shredded memory foam pillows are significantly higher or thicker if that helps. Pillow itself grew on me. You can definitely feel that there is a different material in the center of the pillow. I ordered it as a gift and ended up keeping both pillows. The price tag on this item is absolutely outrageous. I would have never ordered it for myself. Saatva products don’t last in my experience, we got their firmest mattress and within 2 years it was sagging horribly. I am interested to see how long this pillow lasts!
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Reviewed in the United States on January 19, 2026
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Verified Purchase
Placeholder
Louisville, US
★★★★★ 2
Side sleeper- lost loft within 2 weeks
Size: Standard/Queen (Pack of 1), Style: High Loft (6"-7")
Side sleeper and within 2 weeks this pillow has lost its loft and has become lumpy. I have spent so much money trying to support my neck and shoulders, this unfortunately is not it. I will continue my search and return this one.
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Reviewed in the United States on May 26, 2026
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Verified Purchase
Ashley
Port Orchard, US
★★★★★ 4
Mixed Feelings on the Saatva Pillow - A Comprehensive Review
Size: King (Pack of 1), Style: High Loft (6"-7")
Updated Edit (June 2024) : In my quest to find the perfect pillow, I initially purchased the high loft version of this pillow, but it turned out to be a bit too high for my liking. I then decided to try the standard size, and I like it much better! The pillow can still get lumpy and requires fluffing, but opting for the standard lower loft has definitely improved my experience with it. While I still use this pillow occasionally, I generally stick with my Purple Harmony pillow more. Changing my rating to 4 stars. --- Background: Over the past 2 years, I have embarked on a journey to find the perfect pillow, testing over ten different options, including numerous high-end brands. My latest trial was the Saatva pillow, renowned for its rave reviews. Expectations vs. Reality: Despite its widespread acclaim, my experience with the Saatva pillow did not meet my expectations. I opted for the higher loft variant, aligning with my general preference, yet I found it too high of a lot even as a primary side sleeper. Material and Comfort: The Saatva pillow, composed of both latex and down alternative, presented a lumpy texture. This inconsistency resulted in varied support depending on the position of my head. Unlike my regular down alternative pillow, the Saatva required frequent re-fluffing and adjusting throughout the night. Comparison and Value: Considering its price and the overwhelming number of positive reviews, my disappointment was notable. Surprisingly, a more affordable down alternative pillow from Amazon outperformed the Saatva in terms of support and comfort, despite the latter's use of higher quality fabrics and its significantly higher cost. Final Verdict: This pillow was one of the last in my quest to discover the "best" pillow. Sadly, it ranks in the lower ranks among the high-end, expensive pillows I've tried. I preferred the Purple Harmony pillow over the Saatva, albeit with reservations about the Purple Harmony as well. Conclusion: The Saatva pillow, while undoubtedly high-quality and possessing comfortable aspects, did not live up to my expectations, landing it in my pile of unused pillows. It may suit others, but for me, I only give it a 3 out of 5 stars rating.
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Reviewed in the United States on November 26, 2023
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Verified Purchase
Megan
Houston, US
★★★★★ 5
Wonderful!
Size: Standard/Queen (Pack of 1), Style: High Loft (6"-7")
I ordered the loftier version of the pillow and I love it! I'm a side sleeper and I've been having pillow issues over the last few years where I swear every pillow is either too tall, too thin, too soft to provide support, to firm and hurts my ears, or the stuffing is too slick or something and migrates away from wherever I put my head. It's been... A time. But this pillow has been wonderful! I've been using it for a couple weeks now and it's the perfect height for me! The latex inner chamber provides some much needed support, but the softer outer chamber gives me enough cushion to keep my ears from aching. I will say that, while this is the perfect height for me, personally, I think that if you're someone who prefers a pretty lofty pillow, that this might not be tall enough for you. I ordered the taller version, and it feels right for me, but I've noticed in my pillow buying extravaganza that even pillows that everyone else loves that are designed for side sleepers are usually just too tall for me. So if this pillow is right for me, and you prefer a pretty lofty pillow, I really bet that this won't be tall enough in that case. It's definitely more of a medium loft, rather than a very high loft
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Reviewed in the United States on June 20, 2024

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