Professional valve shim tool designed for Yamaha motorcycles with shim-type valve-clearance adjustment.
The tool compresses the valve shim bucket so the adjustment shim can be removed and replaced during valve-clearance service.
Key Features
- Designed for shim-type valve adjustment
- Compresses the valve shim bucket
- Allows safe removal of valve adjustment shims
- Suitable for selected Yamaha XJ / XS models
- Suitable for motorcycle workshop use
Compatibility
Selected Yamaha XJ 550 / 650 / 750 and XS 750 / 850 / 1100 models.
Product Information
- Brand: ASTA
- Product code: A-MK358
- Tool type: Valve shim service tool
- Application: YAMAHA
Note: This is an aftermarket service tool and is not an original vehicle-manufacturer tool. OEM numbers, where listed, are provided for reference and identification purposes only.






