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

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.