| Item | Part number | Description | 
                        
                | 1 | 504162554 | CYLINDER HEAD ASSY | 
                            
                | 2 | 504046374 | SPRING WASHER | 
                            
                | 3 | 16709634 | CYLIND-HEAD SCREW NM10X70 MM | 
                            
                | 4 | 4833051 | VALVE CONE | 
                            
                | 5 | 504076961 | HEXAGON BOLT M15X170 MM | 
                            
                | 6 | 504030171 | NOZZLE HOLDER SEAT | 
                            
                | 7 | 17278881 | O-RING Ø23,5 MM SP=1,7 MM | 
                            
                | 8 | 16990670 | LOCK PLUG Ø22 MM | 
                            
                | 9 | 504051236 | THREADED PLUG DIAM=1/8" | 
                            
                | 10 | 17318511 | THREADED PLUG M6X1 | 
                            
                | 11 | 504027856 | FASTENING BRACKET | 
                            
                | 12 | 504044100 | CYL. HEAD COVER ASSY | 
                            
                | 13 | 17284581 | O-RING Ø59,99 x 2,62 MM | 
                            
                | 13 | 17280381 | O-RING Ø60,05 x 1,78 MM | 
                            
                | 14 | 504039531 | COVER int. Ø 60,70 MM | 
                            
                | 14 | 504155657 | COVER int. Ø 62,52 MM | 
                            
                | 15 | 18137825 | HEXAGON BOLT M6X16 | 
                            
                | 16 | 504029013 | CYL.HEAD GASKET | 
                            
                | 17 | 504120722 | INLET VALVE | 
                            
                | 18 | 504078483 | EXHAUST VALVE | 
                            
                | 19 | 504046468 | WASHER | 
                            
                | 20 | 504076783 | HEXAGON BOLT M15X185 MM | 
                            
                | 21 | 504049514 | HEXAGON BOLT M8X1,25X40 MM | 
                            
                | 22 | 4814897 | ENGINE VALV.SPRING | 
                            
                | 23 | 4675983 | SPRING CAP TOP | 
                            
                | 24 | 98458427 | SPRING CAP BOTTOM | 
                            
                | 25 | 40101874 | SHAFT SEAL | 
                            
                | 26 | 98481105 | HEAD COVER GASKET |