640052 Carburetor Combo - For Tecumseh HMSK80 HMSK90 HMSK100 LH318SA Engine, Toro MTD Cub Cadet Snow Blower
640052 carburetor replacement kit with fuel lines, primer bulb, filter, and mounting gasket.
640052 carburetor combo kit including fuel filter, primer bulb, fuel valve, throttle knobs, fuel lines, gasket, and clamps.
640052 carburetor replacement showing dimensional measurements for compatibility with snowblowers and generators.
640052 carburetor replacement part for Tecumseh engines with compatibility list and part numbers infographic.
Two views of the 640052 carburetor showing the aluminum alloy construction and metal fuel intake components.
640052 carburetor replacement part shown with a snow blower to illustrate common engine repair symptoms.
640052 carburetor replacement part showing optimized fuel and air mixing design for internal combustion engines.
640052 carburetor maintenance tips infographic showing engine part inspection guidelines.
Instructional graphic showing how to install a 640052 carburetor on a snowblower.
640052 carburetor replacement kit with fuel lines, primer bulb, filter, and mounting gasket.
640052 carburetor combo kit including fuel filter, primer bulb, fuel valve, throttle knobs, fuel lines, gasket, and clamps.
640052 carburetor replacement showing dimensional measurements for compatibility with snowblowers and generators.
640052 carburetor replacement part for Tecumseh engines with compatibility list and part numbers infographic.
Two views of the 640052 carburetor showing the aluminum alloy construction and metal fuel intake components.
640052 carburetor replacement part shown with a snow blower to illustrate common engine repair symptoms.
640052 carburetor replacement part showing optimized fuel and air mixing design for internal combustion engines.
640052 carburetor maintenance tips infographic showing engine part inspection guidelines.
Instructional graphic showing how to install a 640052 carburetor on a snowblower.

640052 Carburetor Combo - For Tecumseh HMSK80 HMSK90 HMSK100 LH318SA Engine, Toro MTD Cub Cadet Snow Blower

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640052 Carburetor Combo

Key Features

  • Direct-fit replacement for original equipment
  • Corrosion-resistant metal construction
  • Complete kit includes carburetor, gasket, fuel filter, fuel line, and primer bulb
  • Pre-adjusted for standard factory settings

Replaces / Cross-Reference Part Numbers

  • Tecumseh: 640052, 640349, 640054
  • Oregon / Stens: 50-659, 520-926

Compatibility & Fitment

  • Fits Tecumseh 8HP, 9HP, and 10HP engines
  • Engine Models: HMSK80, HMSK85, HMSK90, HMSK100, HSMK110, LH318A, LH318SA, LH358SA
  • Commonly used on snow blowers, generators, and chipper shredders

When to Replace

  • Engine will not start, or is difficult to start
  • Rough idling or frequent stalling
  • Poor engine performance and lack of power
  • Visible fuel leaks from the carburetor body
  • Black smoke from exhaust or increased fuel consumption

Installation Tips

  • Disconnect the spark plug wire before beginning work.
  • Ensure the fuel tank is empty or the fuel line is clamped off.
  • Replace fuel lines and filter if they show signs of wear or degradation.
  • Verify the new gasket creates a proper seal between the carburetor and the engine intake.
  • Minor adjustments to idle or mixture screws may be necessary after installation for optimal performance.
640052 Carburetor Combo - For Tecumseh HMSK80 HMSK90 HMSK100 LH318SA Engine, Toro MTD Cub Cadet Snow Blower 1
640052 Carburetor Combo - For Tecumseh HMSK80 HMSK90 HMSK100 LH318SA Engine, Toro MTD Cub Cadet Snow Blower 2
640052 Carburetor Combo - For Tecumseh HMSK80 HMSK90 HMSK100 LH318SA Engine, Toro MTD Cub Cadet Snow Blower 3
640052 Carburetor Combo - For Tecumseh HMSK80 HMSK90 HMSK100 LH318SA Engine, Toro MTD Cub Cadet Snow Blower 4
640052 Carburetor Combo - For Tecumseh HMSK80 HMSK90 HMSK100 LH318SA Engine, Toro MTD Cub Cadet Snow Blower 5
640052 Carburetor Combo - For Tecumseh HMSK80 HMSK90 HMSK100 LH318SA Engine, Toro MTD Cub Cadet Snow Blower 6
640052 Carburetor Combo - For Tecumseh HMSK80 HMSK90 HMSK100 LH318SA Engine, Toro MTD Cub Cadet Snow Blower 7
  • 640052 Carburetor Combo - For Tecumseh HMSK80 HMSK90 HMSK100 LH318SA Engine, Toro MTD Cub Cadet Snow Blower 1

    PERFECT FIT

    Compatible with Tecumseh Chipper Shredder 640349 640052 640054 640058 640058A, Tecumseh 8hp 9hp 10hp engines, HMSK80 HMSK90 Generators, etc.
  • 640052 Carburetor Combo - For Tecumseh HMSK80 HMSK90 HMSK100 LH318SA Engine, Toro MTD Cub Cadet Snow Blower 2

    DURABLE METAL & PLASTIC

    The carburetor adopts a robust aluminum alloy, offering remarkable durability, resistance to corrosion, and exceptional efficiency
  • 640052 Carburetor Combo - For Tecumseh HMSK80 HMSK90 HMSK100 LH318SA Engine, Toro MTD Cub Cadet Snow Blower 3

    SAVING SOLUTION

    Enjoy the great feeling when your blower is repaired and works like before - BlueStars brings DIY solutions to help you deal with any trouble
  • 640052 Carburetor Combo - For Tecumseh HMSK80 HMSK90 HMSK100 LH318SA Engine, Toro MTD Cub Cadet Snow Blower 4

    PACKAGE INCLUDE

    1 Carburetor, 1 Mounting Gasket, 1 Fuel Filter, 1 Primer Bulb, 1 Fuel Line, 1 Primer Line, 1 Fuel Valve, Throttle Control Knob 35440 & 35438, 4 Clamp
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Compatible Models

Locate the model number of your appliance or equipment on the manufacturer's label and use it to check compatibility before ordering

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FAQs

This carburetor is designed for Tecumseh 8hp, 8.5hp, 9hp, 9.5hp, 10hp, and 10.5hp engines. It is compatible with engine series HMSK80, HMSK85, HMSK90, HMSK100, HMSK105, HMSK110, LH318SA, and LH358SA, commonly found on snow blowers, generators, and chipper shredders.
This unit replaces OEM part number 640052. It also cross-references with 640054, 640349, 640058, 640058A, Stens 520-926, and Oregon 50-642 and 50-659.
You likely need a replacement if your engine is surging, hunting for idle, struggling to start, or running roughly under load. These issues are frequently caused by internal clogs in the fuel passages or worn-out needle valves, often resulting from old fuel sitting in the system during the off-season.
Before installation, ensure your fuel tank is clean and free of debris or old, degraded gasoline. We highly recommend replacing your fuel line and fuel filter at the same time to prevent contaminants from clogging the new carburetor immediately after installation.
The installation is a straightforward process that typically takes 30 to 60 minutes. You will generally need a basic socket set, a screwdriver for the linkage, and pliers for the fuel line clamps. Ensure the included gasket creates a perfect seal against the intake manifold to prevent air leaks, which can cause the engine to run lean.
While these units are pre-set for most applications, minor adjustments to the idle speed or air-fuel mixture screws may be necessary once the engine is warmed up to achieve optimal performance and smooth operation.