Description
Overview:
The Trigger Interlock for Stihl earth augers is a safety-critical control that blocks the throttle trigger until deliberately pressed, helping prevent accidental activation during drilling. This genuine Stihl OEM part fits BT 360 and BT 308 machines and is identified by MPN 4308 640 7900. It is a direct-replacement component made from durable moulded plastic in a robust, black finish, suitable for frequent site use. By keeping the throttle safely locked until required, it supports controlled starts and safer handling when boring in soil, clay, or mixed ground. Designed to match the original geometry, it maintains the correct feel at the handle and integrates cleanly with the auger's control housing for reliable day‐to‐day operation.
Key Features:
- Genuine Stihl OEM part for assured fit and function on BT 360 and BT 308
- Prevents unintended trigger engagement to enhance operator safety
- Durable moulded plastic construction for long service life in harsh conditions
- Direct-fit replacement to restore original control operation
- Stable, positive action for predictable throttle lockout
- Compatible with the standard handle/control housing on Stihl earth augers
- Low-maintenance design; no special tools typically required for installation
- Supports safe starting and positioning before drilling begins
Typical Applications:
Used on Stihl earth augers for groundworks, fencing, landscaping, utility installation, tree planting, and soil sampling. Ideal for tradespeople and DIY users who need reliable trigger lockout when boring post holes, anchors, or test pits. Helps maintain safe control during setup, alignment, and bit withdrawal in variable ground conditions.
Also known as:
Trigger lock, safety lock, lockout lever, throttle interlock, throttle lockout, auger trigger interlock, safety trigger latch, operator presence lock.
Fits Models:
BT 360, BT 308, BT360, BT308
Alternate Part Numbers:
4308-640-7900, 43086407900
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