235 Carburetor Tune-Up Kit - For Husqvarna 235E 240 240E Jonsered CS2234 586936202 545072601 with Filter

235 / 240 / 236 Carburetor and Tune-Up Kit

Key Features

• Optimized Fuel-to-Air Mixing: Precision-engineered for 34cc to 38cc 2-stroke engines to provide reliable idling and maximum torque during heavy cutting.
• Complete Maintenance Solution: This kit includes the carburetor, air filter, and mounting gaskets to restore engine compression and intake integrity in one service.
• Precision-Molded Body: Constructed from high-strength alloy to resist thermal warping and maintain a perfect vacuum seal against the engine intake manifold.
• Adjustable High/Low Jets: Equipped with standard "H" and "L" adjustment screws, allowing for fine-tuning of the fuel mixture based on altitude and temperature for optimal performance.
• Quick-Start Compatibility: Fully compatible with integrated primer bulb systems, ensuring fast fuel delivery to the venturi for reduced pulling effort.

Replaces / Cross-Reference Part Numbers

• Zama: C1T-W33, C1T-W33A, C1T-W33B, C1T-W33C.
• Husqvarna / Jonsered: 586936202, 545072601, 574719402, 545040701, 545006060.
• Craftsman: 358381600.

Compatibility & Fitment

This carburetor is a direct replacement for various 30cc-class chainsaws manufactured by Husqvarna. Key compatible models include:

• Husqvarna: 235, 235E, 236, 236E, 240, 240E, 120 Mark II.
• Jonsered: CS2234, CS2234S, CS2238, CS2238S.
• RedMax: GZ380.
• Craftsman: Fits select 16-inch and 18-inch models utilizing the 545-series engine platform.

When to Replace

• The "Bog Down" Effect: The saw starts and idles but dies or "bogs" immediately when you pull the throttle to begin a cut.
• Hard Starting (Cold): The engine requires 10+ pulls even after priming, indicating that the internal fuel passages or the choke plate are not functioning.
• High-Speed Stalling: The engine cuts out during the middle of a cut, often caused by a restricted High ("H") jet or a stiffened internal diaphragm.
• Fuel Leaks: Gasoline is weeping from the carburetor body or soaking the air filter, signifying a stuck internal float needle.
• Irregular Idle: The chain spins while the saw is idling, or the engine speed "hunts" (surges), indicating a vacuum leak or a clogged Low ("L") jet.

Installation Tips

• Gasket Inspection: Ensure the old gasket is completely scraped off the intake manifold. Any leftover debris will cause an air leak, making the new carburetor impossible to tune.
• Linkage Connection: Carefully hook the throttle rod into the carburetor plastic arm before bolting the unit down. If the rod is bent during installation, the throttle may stick open.
• Line Routing: Pay close attention to the "Inlet" and "Return" fuel lines. The inlet line (with the filter) must go to the main carburetor barb, while the return line connects the primer bulb back to the tank.
• Fresh Fuel: Empty the gas tank and use fresh 50:1 2-cycle mix (using a high-quality stabilizer). Old fuel is the most common cause of "new" carburetor failure.
• Tuning Tool: Many of these carburetors require a Splined or Double D adjustment tool to turn the "H" and "L" screws. Baseline setting is typically 1.5 turns out from gently seated.