[Lifetime Warranty] 591137 593599 Carburetor - Compatible with Troy-Bilt Pressure Washer 7.75HP 8.75HP 2700-3000PSI Carb 591597 216852 590780 593380 110P02 110P05 11P902 111P02 114P02 121Q02 121Q07 Engine
Replacement carburetor for Troy-Bilt pressure washer engines with included mounting gaskets and O-ring.
591137 carburetor kit including one carburetor, three gaskets, and one O-ring for Troy-Bilt pressure washer engines.
Dimensional diagram of 591137 593599 carburetor for Troy-Bilt pressure washer engines showing key measurement points.
Informational graphic showing 591137 carburetor compatibility and replacement part numbers for pressure washers and mowers.
Infographic showing 591137 carburetor features and close-up details for Troy-Bilt pressure washer engines.
Two 591137 593599 replacement carburetors for Troy-Bilt pressure washer engines shown from different angles.
Instructional graphic showing a mechanic holding a 591137 carburetor with easy installation steps for pressure washers.
591137 replacement carburetor for Troy-Bilt pressure washer and lawn mower engines, shown with application examples.
Replacement carburetor for Troy-Bilt pressure washer engines with included mounting gaskets and O-ring.
591137 carburetor kit including one carburetor, three gaskets, and one O-ring for Troy-Bilt pressure washer engines.
Dimensional diagram of 591137 593599 carburetor for Troy-Bilt pressure washer engines showing key measurement points.
Informational graphic showing 591137 carburetor compatibility and replacement part numbers for pressure washers and mowers.
Infographic showing 591137 carburetor features and close-up details for Troy-Bilt pressure washer engines.
Two 591137 593599 replacement carburetors for Troy-Bilt pressure washer engines shown from different angles.
Instructional graphic showing a mechanic holding a 591137 carburetor with easy installation steps for pressure washers.
591137 replacement carburetor for Troy-Bilt pressure washer and lawn mower engines, shown with application examples.
Lifetime Warranty

[Lifetime Warranty] 591137 593599 Carburetor - Compatible with Troy-Bilt Pressure Washer 7.75HP 8.75HP 2700-3000PSI Carb 591597 216852 590780 593380 110P02 110P05 11P902 111P02 114P02 121Q02 121Q07 Engine

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591137 593599 Carburetor

Key Features

  • Direct-fit replacement for specified Briggs & Stratton engines.
  • Regulates air-fuel mixture for optimal engine performance.
  • Engineered for pressure washers and walk-behind lawn mowers.
  • Constructed for reliability and long service life.

Replaces / Cross-Reference Part Numbers

  • 591137
  • 593599
  • 595390
  • 594287
  • 591597
  • 590948
  • 216852

Compatibility & Fitment

  • Fits Briggs & Stratton engine models 110P02 and 110P05.
  • Designed for engines rated from 7.75 HP to 8.75 HP.
  • Compatible with Troy-Bilt pressure washers operating from 2700 to 3000 PSI.
  • Fits Troy-Bilt walk-behind mower model TB360.
  • Fits John Deere walk-behind mower models JS35, JS46, JM46, and JS48.
  • Fits Husqvarna mower models in the 775EX series.
  • Fits Toro Timemaster 30-inch mower models.

When to Replace

  • Engine fails to start or is difficult to start.
  • Engine runs rough, stalls frequently, or idles poorly.
  • Visible fuel leakage from the carburetor body.
  • Black smoke emits from the exhaust, indicating a rich fuel mixture.
  • Noticeable decrease in engine power and performance.

Installation Tips

  • Disconnect the spark plug wire before beginning work for safety.
  • Note the position of the throttle linkage and fuel lines before disassembly.
  • Ensure the intake manifold mounting surface is clean and free of old gasket material.
  • Always use new gaskets to ensure a proper seal.
  • Tighten mounting bolts evenly to prevent warping the carburetor flange.
  • After installation and before starting, check for any fuel leaks.
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  • COMPATIBLE MODELS

    COMPATIBLE MODELS

    Compatible with specific Pressure Washer/ Lawn Mower models of Troy-Bilt, Husqvarna, B&S
  • PART NUMBERS

    PART NUMBERS

    Replaces part numbers: #591137, 590948, 796608, 591597, 590780, 593380, 593599, 594287, 595390, 796595, 796396, 796657, 798938, 799248, 799154
  • FIX ENGINE'S SYMPTOMS

    FIX ENGINE'S SYMPTOMS

    Popping/ banging/ sneezing sounds | Engine won't start | Idling issues | Excessive exhaust | Carburetor floods
  • IMPORTANT NOTE

    IMPORTANT NOTE

    This is a replacement part designed to be compatible with certain appliances. Any brand names mentioned are used solely to indicate compatibility
SIMPLE INSTALLATION

SIMPLE INSTALLATION

1. Turn off the fuel valve. Drain the fuel tank.
Brand Model Number
Replace part number Replaces 591137, 590948, 796608, 591597, 590780, 593380, 593599, 594287, 595390, 796595, 796396, 796657, 798938, 799248, 799154.
Fit Troy-Bilt 2700Psi 3000Psi Troy-Bilt Pressure Washer 7.75Hp 8.75Hp
Fit Husqvarna HU775H HU775BBC 775EX 875EXI Carburetor
Fit B&S BS 2700-3000psi 190cc 175cc carburetor; 111P02 111P07 114P02 114P05 114P07 11P902 11P905 11P907 121Q02 121Q06 121Q07 121Q12 121Q42 121Q72 121S02 series engine
Fit B&S 121R02 121S02 Engine powered pressure & lawn mower: 121R02-0001-F1 121R02-0111-F1 121R02-0112-F1 121S02-0002-F1 121S02-0003-F1 121S02-0004-F1 121S02-0123-F1 121S02-0124-F1 121S07-0064-F1 121S07-2064-F1 124S02-0123-F1 124S02-0124-F1 124S02-0155-B1 124S02-0155-F1 124S02-0159-B1 124S02-0159-F1 124S02-0160-B1 124S02-0160-F1 12S902-0155-B1 12S902-0158-B1 12S902-0159-B1 12S902-0160-B1 12S902-0163-B1
Manufacturer
‎BlueStars
Brand
‎BlueStars
Model
‎591137 593599 Carburetor
Item Weight
‎6.7 ounces
Package Dimensions
‎4.17 x 3.62 x 2.72 inches
Manufacturer Part Number
‎591137 593599
OEM Part Number
‎591137 593599 590948 796608

FAQ

This carburetor is designed for a wide range of Briggs & Stratton engines, including models 110P02, 110P05, 11P902, 111P02, 114P02, 121Q02, 121Q07, 121R02, 121S02, and 120P02. It is commonly used on Troy-Bilt 7.75HP and 8.75HP pressure washers (2700-3000 PSI), as well as select Craftsman 3200 PSI pressure washers and Husqvarna HU775H, HU775BBC, 775EX, and 875EXI series equipment.
This unit replaces OEM part numbers 591137, 593599, 591597, 216852, 590780, 593380, 590948, 595390, 796595, 796396, 796657, 798938, 799248, 799154, and 796608.
You likely need a replacement if your pressure washer is hard to start, surges while running, stalls under load, or leaks fuel from the carburetor body. These issues are frequently caused by old fuel left in the system, which can gum up the internal jets and passages over time.
Installation is straightforward and typically takes about 30 to 45 minutes for those comfortable with basic hand tools. You will need to remove the air filter housing cover, take out the air filter, remove the air box base, disconnect the fuel lines, and swap the old carburetor for the new one. Ensure you have a clean workspace to avoid getting debris into the intake.
No, this carburetor comes factory pre-adjusted. It is designed to be a direct fit, so you should not need to perform any manual tuning or idle adjustments upon installation.
While replacing the carburetor, it is a good practice to inspect your fuel lines for any cracks or hardening and replace them if necessary. It is also an ideal time to install a fresh air filter and a new spark plug to ensure the engine runs at peak performance.