1. ZT310 single rocker sprocket seat outer shell assembly (including bearing/oil seal) 
                                                
                                             
                                            
                                         
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                                                        2. Bushing Φ45×Φ35×5.5+Φ54×Φ35×2 
                                                
                                             
                                            
                                         
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                                                        3. ZT310 single rocker arm Φ45×Φ55×5 oil seal 
                                                
                                             
                                            
                                         
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                                                        4. DA355520-2RS angular contact bearing 
                                                
                                             
                                            
                                         
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                                                        7. ZT310 single rocker sprocket seat inner shell 
                                                
                                             
                                            
                                         
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                                                        8. ZT310-R1 single rocker sprocket buffer rubber 
                                                
                                             
                                            
                                         
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                                                        9. ZT310 single rocker arm 520-42T sprocket 
                                                
                                             
                                            
                                         
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                                                        10. ZT310-R1 114 section chain (520 oil seal chain/open type) 
                                                
                                             
                                            
                                         
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                                                        11. Non-standard nut M10×1.5(Dacromet) 
                                                
                                             
                                            
                                         
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                                                        12. Non-standard bolt M10×1.5×30 (environmental color) 
                                                
                                             
                                            
                                         
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