Products Description
31A707/31A777/31B775/31C707 Carburetor Repair Kit – Complete Rebuild Solution
OEM-Spec Carburetor Overhaul Kit for Briggs & Stratton Intek/Professional Engines
This carburetor repair kit is a comprehensive rebuild solution for Briggs & Stratton 31 series engines, including models 31A707, 31A777, 31B775, and 31C707 . The kit includes essential gaskets, diaphragms, and internal components required to restore proper fuel metering and engine performance when the original carburetor components have degraded due to age, ethanol-blended fuel exposure, or varnish buildup . Rebuilding the existing carburetor with this kit is a cost-effective alternative to purchasing a complete new carburetor assembly, allowing you to retain the original housing while replacing all wear-prone components in a single service operation.
Technical Profiles & Materials
OEM-Spec Replacement Fitment – This rebuild kit is compatible with Briggs & Stratton part numbers including 594593, 794572, 697141, 697190, 698445, 791858, 791888, 792358, 793224, 799727, and 690194 . Fits 31A707, 31A777, 31B775, and 31C707 models, as well as 31A507, 31A607, 31B707, 31C777, 31D707, 31D777, 31E577, 31E607, 31E677, 31E707, 31E777, 31F707, 31F777, 31M777, 31M877, 31N707, 31P707, 31P777, 31P877, and 31Q777 .
Complete Component Set – Standard rebuild kits include metering and pump diaphragms, gaskets, inlet needle valve, metering lever, spring, fuel strainer, and related components . Some comprehensive kits also include the air filter, fuel filter, spark plug, and fuel line for a complete engine tune-up .
Compatible with Nikki and Walbro Carburetors – This repair kit is available for both Nikki carburetor overhaul and Walbro carburetor overhaul configurations . Verify your carburetor brand before ordering as kits differ between manufacturers . The Nikki carburetor is the factory standard on many 31 series engines.
Durable Materials – Components are manufactured from fuel-resistant rubber, precision metal parts, and high-quality gasket materials designed to withstand exposure to gasoline, ethanol blends, and engine heat for long service life .
Restores Engine Performance – Replacing worn diaphragms and gaskets restores precise fuel metering, addressing hard starting, erratic idling, stalling, hesitation, and loss of power caused by clogged internal passages and ethanol-related fuel degradation .
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Compatible Models | 31A707, 31A777, 31B775, 31C707, 31A507, 31A607, 31C777, 31D707, 31D777, 31E707, 31E777, 31F707, 31F777, 31M777, 31P707, 31P777, and more |
| 2 | OEM Cross-Reference | 594593, 794572, 697141, 697190, 698445, 791858, 791888, 792358, 793224, 799727, 690194, 498061 |
| 3 | Carburetor Types | Nikki or Walbro (specify when ordering) |
| 4 | Kit Contents (Typical) | Gaskets, diaphragms, needle valve, metering lever, spring, strainer |
| 5 | Complete Kit Contents | Carburetor rebuild kit + air filter + fuel filter + spark plug + fuel line + clamps |
| 6 | Material | Fuel-resistant rubber, metal, reinforced gasket material |
| 7 | Engine Series | Briggs & Stratton 31 Series (Intek/Professional) |
| 8 | Unit of Sale | 1 rebuild kit or complete tune-up kit |
Products Application
Briggs & Stratton 31 Series Engine Maintenance
Direct replacement when the engine exhibits hard starting, stalling, rough idling, or power loss due to a clogged or worn carburetor. Ethanol-blended fuels commonly cause diaphragms to harden and gaskets to degrade over time . Rebuilding the carburetor with this kit restores reliable starting and smooth operation on lawn tractors, zero-turn mowers, generators, and pressure washers powered by 31 series engines.
Lawn Tractor & Mower Servicing
For John Deere LA125, LA115, LA105, D110, D105, and Toro TimeCutter zero-turn mowers with 31 series engines, this repair kit provides all components needed for carburetor restoration . Available as a complete tune-up kit including air filter, fuel filter, and spark plug for comprehensive servicing . The kit is compatible with lawn tractors from multiple brands including Craftsman and Toro.
Workshop & Professional Repair
For repair centers and equipment servicing fleets, individual rebuild kits and comprehensive tune-up kits provide cost-effective maintenance solutions. The rebuild kit is essential for restoring proper fuel metering and engine performance, reducing service time by providing all necessary components in one package.
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
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FAQ
Q: How do I confirm which carburetor type is on my engine?
A:Check the carburetor body for manufacturer markings. The 31 series engines use either Nikki or Walbro carburetors, and the overhaul kits are different for each type . Verify your carburetor brand before ordering the repair kit.
Q: What is included in a typical carburetor repair kit?
A: A standard rebuild kit includes metering diaphragms, pump diaphragms, gaskets, inlet needle valve, metering lever, spring, and fuel strainer . Complete tune-up kits may also include air filter, fuel filter, spark plug, fuel line, and clamps.
Q: What are the symptoms that indicate a carburetor rebuild is needed?
A: Common symptoms include hard starting, engine stalling after starting, rough idling, hesitation on acceleration, black smoke from exhaust (rich condition), and loss of power. A clogged carburetor is most commonly caused by leaving fuel in the engine for a long period of time, causing a sticky residue to clog internal passages .
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