partszen Carburetor Kit for Stihl TS410 TS420 - Direct-Fit Zama C1Q-S118 Replacement with Ignition Coil & Primer Bulb

A complete aftermarket carburetor kit from partszen designed to replace Stihl 4238 120 0600 and restore reliable starting and smoother engine performance for TS410 and TS420 saws.

This partszen kit delivers the components most commonly required when a small-engine cutting saw runs rough, stalls, or won’t start: a direct-fit carburetor compatible with Zama C1Q-S118, plus gasket, primer bulb, fuel fittings, spark plug, fuel filter and an ignition coil. It’s packaged as a single unit to simplify repairs and reduce downtime compared with ordering parts separately.

Will this carburetor fit my Stihl TS410 or TS420?

Yes — the carburetor in this kit is made to match the fitment and mounting pattern for Stihl TS410 and TS420 models and corresponds to Zama C1Q-S118 specifications. Confirm your saw’s part number before purchasing to ensure compatibility.

• Replaces Stihl part number 4238 120 0600
• Designed for TS410 and TS420 cut-off saws
• Mating points mirror original equipment for bolt-on replacement

What exactly comes in the partszen TS420 carburetor kit?

The kit includes the carburetor plus the most common ancillary parts needed for a full basic service. That reduces the risk of missing small parts during reassembly and gets your saw back to work faster.

• 1 carburetor body (partszen replacement)
• 1 gasket, 1 primer bulb, 1 fuel line, 1 fuel filter
• 1 spark plug and 1 ignition coil included as pictured

How does replacing the carburetor help saw performance?

A worn or clogged carburetor can cause hard starting, inconsistent idling, and poor throttle response. Installing a new carburetor re-establishes correct fuel flow and mixture control, helping the engine run more consistently under load.

• Restores proper fuel metering and idling stability
• Eliminates leaks or blockages from old components
• Includes ignition coil and plug to address common ignition-related issues

What should I know before installation?

Basic mechanical skills and standard small-engine tools are sufficient for most DIY installations. Take care to match gaskets and fuel lines and verify ignition timing and clearances if replacing the coil.

• Disconnect spark plug and drain fuel before starting
• Compare new parts with originals to confirm orientation and fit
• After install, check for fuel leaks and adjust idle per manufacturer specs

Who is this for? This partszen carburetor kit suits professional landscapers, rental shops, and DIY mechanics who need a single, complete aftermarket solution to service Stihl TS410 or TS420 cut-off saws. It’s useful when you want to replace the carburetor and several related items in one repair job, reduce repeat downtime, and avoid multiple orders for small parts. If you’re unsure about fitment or installation, consult a service manual or a qualified technician before proceeding.