Description
Overview:
This piston stop tool is a screw-in service aid for Stihl two‐stroke cut‐off saws. Made from durable metal, it threads into the spark plug hole and locks the piston so you can safely hold the crankshaft while removing or tightening the clutch or flywheel nuts. The tool is intended for machines that use a BPRM7A‐type spark plug thread, making it a straightforward fit on popular Stihl TS models such as the TS350 and TS420. By positively stopping the piston, it prevents the engine from turning during key service jobs, helping you work faster and with better control. Robust construction supports repeated workshop use, making it suitable for both professional technicians and DIY users maintaining their own machines.
Key Features:
- Screw‐in design for machines using BPRM7A spark plug threads for quick, secure engagement
- Locks the piston to aid clutch, drive drum, and flywheel nut removal or installation
- Durable metal body for repeatable, long‐term workshop use
- Simple to use via the spark plug port; no special tools needed beyond a plug spanner
- Helps reduce the risk of piston or port damage when used correctly and without excessive force
- Time‐saving aid for routine servicing and deeper strip‐downs
- Suitable for professional workshops, hire fleets, and home maintenance
- Manufacturer reference: 350 103
Typical Applications:
Holding the crankshaft stationary during clutch removal and refitting, flywheel and starter rotor service, drive system work, and top‐end inspections on Stihl two‐stroke cut‐off saws. Useful for routine servicing, troubleshooting, and full engine overhauls where controlled crank locking is required.
Also known as:
Piston locking tool, crankshaft locking tool, cylinder stop tool, spark plug hole stop, engine locking stop, plug‐thread piston stop.
Fits Models:
TS350, TS360, TS410, TS420
Alternate Part Numbers:
E6391
Product Specifications
| L&S Part No. | 350 103 |
|---|---|
| Unit of Sale | 1 |
| Applications | TS 350, TS 360, TS 410, TS 420, TS350, TS360, TS410, TS420 |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Fits Models | TS410, TS420 | TS350, TS360 |
