MS391 Carburetor Kit for Stihl MS311 MS311Z MS391C Walbro WTE-9A WTE-17 Chainsaw - Replaces 1140 120 0601 1140 120 0605 1140 120 0600 - Includes Fuel Filter Spark Plug Fuel Line

Key Features

• Complete aftermarket carburetor replacement kit
• Designed to meet original equipment specifications for fit and function
• Kit includes: 1x Carburetor, 1x Fuel Filter, 1x Spark Plug, 1x Fuel Line

Replaces / Cross-Reference Part Numbers

• Stihl: 1140 120 0601, 1140 120 0605, 1140 120 0600
• Walbro: WTE-9A, WTE-17

Compatibility & Fitment

• Stihl MS311
• Stihl MS311Z
• Stihl MS391
• Stihl MS391C
• Compatible with specified models equipped with Walbro WTE series carburetors

When to Replace

• Engine fails to start, is difficult to start, or stalls during operation
• Unstable or rough idling
• Noticeable loss of power or poor acceleration
• Black smoke emitting from the exhaust
• Visible fuel leakage from the carburetor body or fuel lines

Installation Tips

• Always disconnect the spark plug wire before beginning service
• Note the routing of fuel lines, throttle linkage, and choke linkage before disassembly
• It is recommended to replace the fuel filter and fuel line when installing a new carburetor
• Fine-tuning of the idle and mixture screws may be required after installation to match engine requirements
• Refer to your chainsaw's service manual for specific procedures and torque specifications