MPN: 00008905005, 000 890 5005. Compatible with Stihl, suitable for the fuel tank structure of most FS and MS series equipment. After replacement, it can maintain stable fuel pressure and improve equipment operation reliability. This product is a replacement for the fuel tank filling cap, which can ensure that the gasoline engine fuel tank maintains a good sealing state during use and avoid leakage problems caused by aging fuel caps. The oil cap adopts a stable threaded structure, which can firmly fit the fuel tank mouth after tightening, avoiding loosening caused by vibration. Installation does not require any tools, just unscrew the old parts and align the new oil cap with the oil port and tighten it. After installation, it is recommended to gently tilt the equipment to check for leaks and ensure good sealing before resuming normal operation. It is recommended to replace the oil cap in a timely manner when there is seal aging, deformation, or thread wear to maintain the best condition of the equipment., Manufacturer: YINETTECH