WT-427-Type Carburetor for Stihl 024, 026, MS240 and MS260 – 1121 120 0612

Description

This Stihl MS260 carburetor is an aftermarket diaphragm carburetor for selected later versions of the Stihl 024, 026, MS240, MS260 and MS260 Pro petrol chainsaws. It corresponds to the later WT-427-type configuration associated with reference 1121 120 0612.

These Stihl model families were produced with several carburetor versions. Therefore, compatibility must be confirmed from the original carburetor, production version and physical connections. Earlier saws may use a different WT-426-style carburetor associated with reference 1121 120 0611.

Compatible Stihl chainsaws

The seller lists selected versions of:

• Stihl 024
• Stihl 026
• Stihl MS240
• Stihl MS260
• Stihl MS260 Pro

Reference information:

• 1121 120 0612
• 1121-120-0612
• 11211200612
• WT-427 type

Product details

• Product type: diaphragm carburetor
• Application: two-stroke petrol chainsaw
• Version: later-style configuration
• Adjustment: externally accessible mixture screws
• Package contents: one carburetor as photographed
• Gaskets: not included unless shown in the photographs
• Condition: new aftermarket replacement part

Before ordering, compare the mounting-hole spacing, intake opening, fuel connection, impulse passage, throttle linkage, choke mechanism and adjustment-screw positions. In addition, check the designation on the removed carburetor whenever it remains readable.

A worn carburetor can cause difficult starting, unstable idle, weak acceleration, excessive fuel use or insufficient fuel delivery under load. Nevertheless, similar symptoms may result from a blocked fuel filter, hardened fuel hose, restricted tank vent, leaking intake boot or worn crankshaft seals. Consequently, inspect the complete fuel and intake system before replacing the carburetor.

During installation, use suitable undamaged gaskets and keep the impulse passage clear. Furthermore, confirm that the throttle and choke controls move freely before starting the engine.

After installation, adjust the idle and fuel mixture according to the correct service procedure. Because a mixture that is too lean can overheat the engine and damage the piston, final adjustment with a suitable tachometer is recommended.

Browse additional chainsaw parts for compatible fuel lines, filters, intake components and engine parts.