35 “Oil-Pull” fuel system 93 36 Air washer 95 37 Air strainer 96 38 “E-B” governor 97 39 “Case” governor 98 40 “Hart-Parr” governor 99 41 Vertical governor 101 42 Armature 107 43 Flow of magnetism through armature core 108 44 One complete revolution of the armature 111 45 Connections of Bosch magneto 112 46 “K-W” inductor 115 47 “K-W” inductor in three positions 117 48 “Dixie” inductor 118 49 Three positions of “Dixie” inductor 120 50 “Bosch” circuit breaker 121 51 “K-W” circuit breaker 122 52 “Bosch” magneto in section 126 53 “K-W” magneto in section 129 54 Magnetism in a copper wire 132 55 Magnetism from electricity 133 56 Principle of spark coil 134 57 “Atwater-Kent” ignition system 136 58 Vibrator coil ignition system 139 59 Spark plug 141 60 Internal clutch 144 61 Plate clutch 147 62 Principle of sliding gear 155 63 Principle of jaw clutch change speed gear 157 64 “I. H. C.” chain drive, showing differential 162 65 “Case” rear axle 163 66 “Oil-Pull” rear axle 164 67 Driving worm 165 68 Tractor arrangement 168 69 Tractor arrangement 169 70 “Gray” tractor 171 71 Types of front axles 172 72 Spring support 173 73 “Mogul” oiling diagram 180 74 “Illinois” oiling diagram 183 75 End of “Twin City” connecting rod 185 76 Wrist pin lubrication 186 77 Force feed oiling system of “Gray” engine 187 78 Oil pump 188 79 “E-B” oil pump 189 80 Oil pump with hollow plunger 190 81 Methods of preventing oil leaks 191 82 “Titan” lubricator 192 83 “I. H. C.” method of oiling crank pins 193 84 “Hart-Parr” oiling system 194 85 Oil cup 195 86 Proper use of a grease cup 196