Part Location Diagram of 590400 Briggs and Stratton Carburetor
See part D-125A in the diagram
( Grid squares measure 1x1 inch )

Carburetor 590400

Manufactured by:
Briggs and Stratton
ERP Number:
ERP9034605
Part Number:
590400
Original Equipment Manufacturer ?
  Works with your model  21R802!
In Stock
Delivers in 3-5 Business Days!

Easy 

15 - 30 mins 

(2 rated repairs) ?
  Works with your model   21R802!

Product Description

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This genuine OEM sourced replacement part is specially designed for Briggs and Stratton engines commonly installed on lawn and garden equipment. The purpose of this part is to mix the air and the gas before the combustible mix goes to the engine, over time components may wear out and begin to fail eventually requiring a replacement to ensure peak performance. If the engine won't start and the tank is full of fresh fuel or if the engine starts and then quickly dies, the carburetor is likely the problem. Please note this high-quality metal body carburetor is sold individually, keep in mind it also includes a rubber hose and a composite material gasket.

Troubleshooting

This part works with the following brands:
  • Briggs and Stratton
This part works with the following products:
  • Engine
Part# 590400 replaces these:
796078,

Customer Part Reviews

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5.0
Average Rating (out of 5):
★★★★★
★★★★★
(1 Review)
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Customer Repair Instructions

All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.

Easy 

15 - 30 mins 

(2 rated repairs) ?
  • 1
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Carburetor messed up due to bad fuel sitting too long

Andrew from North chesterfield, Virginia

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Socket set, Wrench (Adjustable), Wrench set
Parts Used:
697122, 590400
1. Removed cover from top of the engine. ( four 10mm bolt)
2. Removed two 12mm nuts holding on the elbow-intake on the carburetor
3. Removed the two 8mm bolts holding the carburetor
4. Reverse the process to put back together
5 Started the riding mower and let the engine warm up
6. Once the engine was warm I turned the choke to the lowest setting and starting backing the idle air adjustment screw all the way out until the engine was about to turn off then I screwed it back in just a bit till it was running smooth.
7. Cut the grass
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Solenoid had gone out and carburetor misfiring

William from FRANKLIN, Virginia

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Wrench set
Parts Used:
590400
Was extremely easy. Only got the whole carburetor because it was cheaper than buying the solenoid and rebuilding carb. 4 bolts and the throttle and choke levers were easy to remove and replacement was just as easy. From opening box to firing up mower took all of 15 minutes and new carb fit like a glove. Nothing special or hard about i t. Just remove the 4 bolts first and it makes it easier to remove the throttle and choke levers with springs.
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