Thank you for shopping at MaruyamaParts.com and for using the parts lookup system to find parts for your BST23, BST23C. You have selected the Engine diagram for the Maruyama BST23, BST23C Trimmers and Brushcutters. Below you will find an interactive part diagram for the BST23, BST23C Engine. If you find the part in the diagram you need you may click on the item number in the diagram or find it in the parts list below the diagram. For the BST23, BST23C parts not shown in this diagram you may select from one of the other BST23, BST23C part assemblies or select a different Trimmers and Brushcutters altogether. Thanks for shopping with us at MaruyamaParts.com and for making us your source for Maruyama Trimmers and Brushcutters parts.