Hipa Carburetor for STIHL TS420/TS410 Cut‑Off Saw Kit (4238 120 0600) — Wet‑Flow Tested, Includes Filters

HIPA’s TS420/TS410 replacement carburetor kit is a ready-to-install assembly designed to restore fuel delivery and ignition on STIHL TS410 and TS420 concrete cut-off saws.

If your STIHL cut-off saw has rough idling, hard starting, or inconsistent throttle response, a worn or clogged carburetor is often the cause. This aftermarket HIPA kit provides the core carburetor body built to fit the Zama C1Q-S118 specification (part number 4238 120 0600) plus essential service items so you can perform a fuel-system refresh in one maintenance session. The package is supplied as a complete kit and may arrive in either new or legacy packaging; the parts themselves are wet flow tested to help ensure consistent performance under engine load.

Will this carburetor fit my STIHL TS410 or TS420 saw?

Yes—this carburetor is manufactured to match the mounting and linkage layout used on STIHL TS410, TS410Z, TS420, and TS420Z models. Confirm compatibility by checking your original part number against 4238 120 0600 or the Zama C1Q-S118 reference. Always compare flange dimensions and throttle/choke linkage positions before installing.

• Compatible models: STIHL TS410, TS410Z, TS420, TS420Z
• OEM reference: 4238 120 0600 / Zama C1Q-S118
• Mounting and linkage designed for direct replacement
• Compare with original carburetor for final confirmation

What comes in the HIPA TS420 carburetor kit?

The kit bundles the replacement carburetor plus common consumables needed when overhauling a small two-stroke saw’s fuel system. Having these parts included saves time and ensures you install fresh filters and ignition components at the same service interval.

• HIPA carburetor (wet flow tested complete body)
• Air filter and pre-filter to protect intake passages
• Fuel filter and primer bulb to renew fuel delivery components
• Spark plug to re-establish reliable ignition

How does this replacement help saw performance and service life?

A new carburetor plus fresh filters and a spark plug restores predictable air/fuel metering and keeps debris out of the engine. That improves starting and throttle response, reduces stalling, and prevents lean or rich running conditions caused by clogged passages or degraded components.

• Fresh jetting and passages reduce stumbling and poor idle
• New air and fuel filters lower contamination risk to the engine
• Included spark plug and primer bulb support reliable starts
• Wet flow testing helps ensure consistent fuel flow under load

How do I install and tune the replacement carburetor?

Installation follows the original carburetor’s mounting points and linkages; basic mechanical skill and a small tool set are required. After fitting, set the idle and mixture screws per the saw’s service manual and fine-tune while the engine is at operating temperature for best results.

• Remove old carburetor, transfer throttle/choke linkages, and mount new unit
• Replace air filter, fuel filter, primer bulb, and spark plug as included
• Start and warm the engine; adjust idle and mixture screws carefully
• Use manufacturer torque specs and check for fuel leaks before use

Who is this for: The HIPA TS420/TS410 carburetor kit is aimed at professional landscapers, rental shops, and experienced DIY technicians who service STIHL concrete cut-off saws and need a complete, time-saving fuel-system rebuild in one purchase. It’s ideal when the existing carburetor shows signs of clogging, damaged diaphragms, poor starting, or erratic throttle behavior and you prefer a bundled solution that includes common replacement consumables.