Engine
                                        686 cc liquid-cooled SOHC 4-stroke; 4 valves
                                        686 cc liquid-cooled SOHC 4-stroke; 4 valves
                                     
                                
                            
                                
                                    
                                        Displacement
                                        686 cc
                                        686 cc
                                     
                                
                            
                                
                                    
                                        Bore x Stroke
                                        102 x 84 mm
                                        102 x 84 mm
                                     
                                
                            
                                
                                    
                                        Compression Ratio
                                        10 : 1
                                        10 : 1
                                     
                                
                            
                                
                                    
                                        Fuel Capacity
                                        2.9 gal
                                        2.9 gal
                                     
                                
                            
                                
                                    
                                        Ignition
                                        TCI: Transistor Controlled Ignition
                                        TCI: Transistor Controlled Ignition
                                     
                                
                            
                                
                                    
                                        Starting
                                        Electric
                                        Electric
                                     
                                
                            
                                
                                    
                                
                            
                                
                                    
                                        Fuel System
                                        Yamaha Fuel Injection (YFI), 44mm
                                        Yamaha Fuel Injection (YFI), 44mm