Harbot MS290/MS310 Carburetor for STIHL MS 290/MS310/MS390 – 1127-120-0650

Overview

Discover the Harbot MS290/MS310 carburetor replacement kit, engineered for compatibility with select STIHL chainsaws. Built to align with the mounting patterns and fuel flow needs of STIHL MS290, MS310, MS390, and 039 models, this kit aims to deliver steadier idle, crisper throttle response, and smoother mid-range operation. Each component is machined for precise tolerances and designed to withstand regular outdoor use, so you can stay productive in the yard, on the job site, or during weekend projects.

What’s included

• 1 x carburetor
• 1 x air filter
• 1 x spark plug
• 1 x fuel line
• 1 x fuel filter
• 1 x oil filter
• 1 x oil line

Package includes are shown in the product images and correspond to the all-in-one kit, designed to support a routine tune-up without purchasing items separately.

Part numbers, compatibility, and notes

Replacement carburetor part number: 1127-120-0650 (also listed as 1127-120-0604). The kit references Wal-bro HD-18/HD-19 compatibility and air filter replacements: 1127-120-1621/1127-120-1620. The air filter is noted as not compatible with Stihl 029 in certain configurations, so please verify model fit before installing.

Performance and testing

Consistent engine performance is a core focus of this kit. Each component is designed to support stable fueling and predictable response by simulating real-world engine operation through wet-flow testing. While results can vary with the overall condition of the saw and fuel quality, the kit is built to offer a dependable baseline for routine maintenance and use during routine cutting tasks.

All-in-one convenience

The all-in-one nature of this tune-up kit saves time and reduces the need to source individual items separately. With the central goal of simplifying maintenance, the kit provides a cohesive package that covers the essential parts for a complete carburetor replacement and related components.

Real-world use and considerations

In practical use, the included parts support a straightforward swap during maintenance sessions between cuts or projects. The combination of a carburetor, air filter, ignition spark plug, and fuel delivery components helps address common wear and tear, with potential benefits such as improved throttle response and smoothness under load. Individual results will depend on engine wear, fuel quality, and operating conditions.

Compatibility notes and packaging details reflect the described models and part references, helping you determine if this Harbot kit aligns with your saw and maintenance plan.