Bukh V8 Series Owner'S Manual Download Page 132

Page: 132 / 376

Owners Manual

132

Summary of Contents for V8 Series

Page 1: ...base engine is upgraded with high quality BUKH marine parts The BUKH V8 is a marine certified SOLAS engine built for optimal marine safety BUKH is ISO 9001 2015 certified which allows us to produce high quality marine engines BUKH V8 engines are built by trained personnel according to our quality specifications BUKH V8 engines are quality inspected and tested before they leave the BUKH factory The...

Page 2: ...ing flow Break in procedure The BUKH V8 series engines need break in time before being operating to its full potential This is due to the design characteristics of the base engine Follow the recommendations below 0 5hrs Use varied load and engine speed but do not load the engine above 50 throttle and keep engine speed below 2500 rpm 2500 1 min Do not stay at one load and engine speed configuration...

Page 3: ...his allows the automatic glow system to glow its first sequence DO NOT USE STARTING AIDS SUCH AS STARTING GAS ETHER OR OTHER This will void any warranty 3 Turn the ignition key to the CRANK position to start the engine If the engine doesn t start in 15 seconds wait for 30 seconds and go back to step 2 As soon as the engine starts let it run at idle while checking oil pressure and volt reading It s...

Page 4: ...el tank is full to prevent water contamination Add water repellent isopropanol to the fuel system Remove and replace the fuel filter remember to prefill the filter with fuel as you otherwise will have issues with bleeding all the trapped air from the fuel system Cooling system Start the engine and run antifreeze mix through the raw water system Check the freeze protection of antifreeze in the fres...

Page 5: ... dry Cooling system Recheck that all hoses and fittings in the raw water system are connected and replace the impeller be careful not to scuff the impeller use grease Prime the raw water system to prevent overheating of the impeller at start up Air filter Replace with new filter unit Start up See starting procedures on page 3 Check for leakage of oil fuel and water Also check the oil level on the ...

Page 6: ... Maximum demonstration period is 50h The emission control systems of your new V8 engine were designed built and tested using BUKH genuine parts accordingly it is recommended that any replacement parts used for maintenance repair or replacement of emission control systems be BUKH genuine parts The owner may elect to have maintenance replacement or repair of the emission control components and syste...

Page 7: ...adjustments modifications alteration tampering disconnection improper or inadequate maintenance improper installation and or rigging or use of fuels not recommended for the engine as described in the User s Manual 2 Damage resulting from accident acts of nature or other events beyond the control of BUKH or any of its representatives 3 The replacement of expendable maintenance items such as exhaust...

Page 8: ...uel injection pump 2 Air Induction System Turbocharger Intercooler 3 Miscellaneous Items ECU Software calibration Customer assistance BUKH wishes to help assure that the Emission Control System Warranty is properly administered In the event that you do not receive the warranty service to which you believe you are entitled under the Emission Control Systems Warranty you should contact BUKH at the a...

Page 9: ...ifold The centre exhaust manifold is high quality cast aluminium Vacuum injected and powder coated The center exhaust has one inner exhaust chamber and a surrounding coolant chamber for sea water Exhaust and sea water exits the BUKH V8 engine through 2 outlets and mixes into an Ø120 mm outlet Picture show the exhaust manifolds These exhaust manifolds has one inner exhaust chamber and one surroundi...

Page 10: ...ooler Air intake duct and air filter assembly Outside air enters the induction system through a filter located on the front of the engine This is a bonded stainless steel mesh filter material and should be cleaned and replaced according to service intervals See BUKH V8 MAINTENANCE BOOK The air filter element mounts to the intake runner inlet with a clamp Air filter unit Description Picture of the ...

Page 11: ...arts Turbo charger Description Picture of the turbo charger The charger is a high quality turbo charger in stainless steel Intake assembly with integrated stainless steel intercooler Intercooler assembly Description Picture of the stainless steel intercooler core with aluminium housing Compressed air and coolant connections Ø40 mm hoses are sea water coolant hoses ...

Page 12: ...Owners Manual 12 Sea water inlet Description Picture of impeller pump and sea water inlet Ø40 mm hose connection IN ...

Page 13: ...e of inlet fuel cooler Some configurations make use of the inlet fuel cooler option Fuel cooler is sea water cooled Is such case the inlet fuel can be connected to the IN connection This connection is a hydraulic connection Guide 3 8 inch straight ISO 228 1 G Some configurations with outlet fuel cooler Fuel out is after the fuel cooler Fuel cooler is sea water cooled Return hose to fuel tank Hose ...

Page 14: ...engine Please see appropriate sections for further information Oil filter It is essential that the oil lines and oil filter are prefilled with oil before starting the engine The lines should be connected as shown below Remote engine oil filter Description Picture of a remote engine oil filter Engine oil in and oil out are marked with arrows on top of the oil filter house ...

Page 15: ...ote oil filter house 3 From oil out arrow connection on oil filter house to oil pump in connection Oil pump connections Description Picture of oil hose connections with remote engine oil filter and oil cooler See IN and OUT mark OUT and hose 1 From oil pump out connection to nearest oil cooler connection IN and hose 3 From oil out arrow connection on remote engine oil filter house to oil pump IN c...

Page 16: ...Owners Manual 16 WARNING BEFORE MOUNTING THE OIL FILTER FILL THE OIL FILTER COMPLETELY WITH OIL THIS IS TO ENSURE THAT THE ENGINE GETS LUBRICATED DIRECT FROM START UP ...

Page 17: ...Owners Manual 17 ...

Page 18: ...Owners Manual 18 ...

Page 19: ...Owners Manual 19 ...

Page 20: ...Owners Manual 20 ...

Page 21: ...Owners Manual 21 ...

Page 22: ...Owners Manual 22 ...

Page 23: ...Owners Manual 23 ...

Page 24: ...Owners Manual 24 ...

Page 25: ...Owners Manual 25 ...

Page 26: ...Owners Manual 26 ...

Page 27: ...Owners Manual 27 ...

Page 28: ...Owners Manual 28 ...

Page 29: ...Owners Manual 29 ...

Page 30: ...Owners Manual 30 ...

Page 31: ...Owners Manual 31 ...

Page 32: ...Owners Manual 32 ...

Page 33: ...Owners Manual 33 ...

Page 34: ...Owners Manual 34 ...

Page 35: ...Owners Manual 35 ...

Page 36: ...Owners Manual 36 ...

Page 37: ...Owners Manual 37 ...

Page 38: ...Owners Manual 38 ...

Page 39: ...Owners Manual 39 ...

Page 40: ...Owners Manual 40 ...

Page 41: ...Owners Manual 41 ...

Page 42: ...Owners Manual 42 ...

Page 43: ...Owners Manual 43 ...

Page 44: ...Owners Manual 44 ...

Page 45: ...Owners Manual 45 ...

Page 46: ...Owners Manual 46 ...

Page 47: ...Owners Manual 47 ...

Page 48: ...Owners Manual 48 ...

Page 49: ...Owners Manual 49 ...

Page 50: ...Owners Manual 50 ...

Page 51: ...Owners Manual 51 ...

Page 52: ...Owners Manual 52 ...

Page 53: ...Owners Manual 53 ...

Page 54: ...Owners Manual 54 ...

Page 55: ...Owners Manual 55 ...

Page 56: ...Owners Manual 56 ...

Page 57: ...Owners Manual 57 ...

Page 58: ...Owners Manual 58 ...

Page 59: ...Owners Manual 59 ...

Page 60: ...Owners Manual 60 ...

Page 61: ...Owners Manual 61 ...

Page 62: ...Owners Manual 62 ...

Page 63: ...Owners Manual 63 ...

Page 64: ...Owners Manual 64 ...

Page 65: ...Owners Manual 65 ...

Page 66: ...Owners Manual 66 ...

Page 67: ...Owners Manual 67 ...

Page 68: ...Owners Manual 68 ...

Page 69: ...Owners Manual 69 ...

Page 70: ...Owners Manual 70 ...

Page 71: ...Owners Manual 71 ...

Page 72: ...Owners Manual 72 ...

Page 73: ...Owners Manual 73 ...

Page 74: ...Owners Manual 74 ...

Page 75: ...Owners Manual 75 ...

Page 76: ...Owners Manual 76 ...

Page 77: ...Owners Manual 77 ...

Page 78: ...Owners Manual 78 ...

Page 79: ...Owners Manual 79 ...

Page 80: ...Owners Manual 80 ...

Page 81: ...Owners Manual 81 ...

Page 82: ...Owners Manual 82 ...

Page 83: ...Owners Manual 83 ...

Page 84: ...Owners Manual 84 ...

Page 85: ...Owners Manual 85 ...

Page 86: ...Owners Manual 86 ...

Page 87: ...Owners Manual 87 ...

Page 88: ...Owners Manual 88 ...

Page 89: ...Owners Manual 89 ...

Page 90: ...Owners Manual 90 ...

Page 91: ...Owners Manual 91 ...

Page 92: ...Owners Manual 92 ...

Page 93: ...Owners Manual 93 ...

Page 94: ...Owners Manual 94 ...

Page 95: ...Owners Manual 95 ...

Page 96: ...Owners Manual 96 ...

Page 97: ...Owners Manual 97 ...

Page 98: ...Owners Manual 98 ...

Page 99: ...Owners Manual 99 ...

Page 100: ...Owners Manual 100 ...

Page 101: ...Owners Manual 101 ...

Page 102: ...Owners Manual 102 ...

Page 103: ...Owners Manual 103 ...

Page 104: ...Owners Manual 104 ...

Page 105: ...Owners Manual 105 ...

Page 106: ...Owners Manual 106 ...

Page 107: ...Owners Manual 107 ...

Page 108: ...Owners Manual 108 ...

Page 109: ...Owners Manual 109 ...

Page 110: ...Owners Manual 110 ...

Page 111: ...Owners Manual 111 ...

Page 112: ...Owners Manual 112 ...

Page 113: ...Owners Manual 113 ...

Page 114: ...Owners Manual 114 ...

Page 115: ...Owners Manual 115 ...

Page 116: ...Owners Manual 116 ...

Page 117: ...Owners Manual 117 ...

Page 118: ...Owners Manual 118 ...

Page 119: ...Owners Manual 119 ...

Page 120: ...Owners Manual 120 ...

Page 121: ...Owners Manual 121 ...

Page 122: ...Owners Manual 122 ...

Page 123: ...Owners Manual 123 ...

Page 124: ...Owners Manual 124 ...

Page 125: ...Owners Manual 125 ...

Page 126: ...Owners Manual 126 ...

Page 127: ...Owners Manual 127 ...

Page 128: ...Owners Manual 128 ...

Page 129: ...Owners Manual 129 ...

Page 130: ...Owners Manual 130 ...

Page 131: ...Owners Manual 131 ...

Page 132: ...Owners Manual 132 ...

Page 133: ...Owners Manual 133 ...

Page 134: ...Owners Manual 134 ...

Page 135: ...Owners Manual 135 ...

Page 136: ...Owners Manual 136 ...

Page 137: ...Owners Manual 137 ...

Page 138: ...Owners Manual 138 ...

Page 139: ...Owners Manual 139 ...

Page 140: ...Owners Manual 140 ...

Page 141: ...Owners Manual 141 ...

Page 142: ...Owners Manual 142 ...

Page 143: ...Owners Manual 143 ...

Page 144: ...Owners Manual 144 ...

Page 145: ...Owners Manual 145 ...

Page 146: ...Owners Manual 146 ...

Page 147: ...Owners Manual 147 ...

Page 148: ...Owners Manual 148 ...

Page 149: ...Owners Manual 149 ...

Page 150: ...Owners Manual 150 ...

Page 151: ...Owners Manual 151 ...

Page 152: ...Owners Manual 152 ...

Page 153: ...Owners Manual 153 ...

Page 154: ...Owners Manual 154 ...

Page 155: ...Owners Manual 155 ...

Page 156: ...Owners Manual 156 ...

Page 157: ...Owners Manual 157 ...

Page 158: ...Owners Manual 158 ...

Page 159: ...Owners Manual 159 ...

Page 160: ...Owners Manual 160 ...

Page 161: ...Owners Manual 161 ...

Page 162: ...Owners Manual 162 ...

Page 163: ...Owners Manual 163 ...

Page 164: ...Owners Manual 164 ...

Page 165: ...Owners Manual 165 ...

Page 166: ...Owners Manual 166 ...

Page 167: ...Owners Manual 167 ...

Page 168: ...Owners Manual 168 ...

Page 169: ...Owners Manual 169 ...

Page 170: ...Owners Manual 170 ...

Page 171: ...Owners Manual 171 ...

Page 172: ...Owners Manual 172 ...

Page 173: ...Owners Manual 173 ...

Page 174: ...Owners Manual 174 ...

Page 175: ...Owners Manual 175 ...

Page 176: ...Owners Manual 176 ...

Page 177: ...Owners Manual 177 ...

Page 178: ...Owners Manual 178 ...

Page 179: ...Owners Manual 179 ...

Page 180: ...Owners Manual 180 ...

Page 181: ...Owners Manual 181 ...

Page 182: ...Owners Manual 182 ...

Page 183: ...Owners Manual 183 ...

Page 184: ...Owners Manual 184 ...

Page 185: ...Owners Manual 185 ...

Page 186: ...Owners Manual 186 ...

Page 187: ...Owners Manual 187 ...

Page 188: ...Owners Manual 188 ...

Page 189: ...Owners Manual 189 ...

Page 190: ...Owners Manual 190 ...

Page 191: ...Owners Manual 191 ...

Page 192: ...Owners Manual 192 ...

Page 193: ...Owners Manual 193 ...

Page 194: ...Owners Manual 194 ...

Page 195: ...Owners Manual 195 ...

Page 196: ...Owners Manual 196 ...

Page 197: ...Owners Manual 197 ...

Page 198: ...Owners Manual 198 ...

Page 199: ...Owners Manual 199 ...

Page 200: ...Owners Manual 200 ...

Page 201: ...Owners Manual 201 ...

Page 202: ...Owners Manual 202 ...

Page 203: ...Owners Manual 203 ...

Page 204: ...Owners Manual 204 ...

Page 205: ...Owners Manual 205 ...

Page 206: ...Owners Manual 206 ...

Page 207: ...Owners Manual 207 ...

Page 208: ...Owners Manual 208 ...

Page 209: ...Owners Manual 209 ...

Page 210: ...Owners Manual 210 ...

Page 211: ...Owners Manual 211 ...

Page 212: ...Owners Manual 212 ...

Page 213: ...Owners Manual 213 ...

Page 214: ...Owners Manual 214 ...

Page 215: ...Owners Manual 215 ...

Page 216: ...Owners Manual 216 ...

Page 217: ...Owners Manual 217 ...

Page 218: ...Owners Manual 218 ...

Page 219: ...Owners Manual 219 ...

Page 220: ...Owners Manual 220 ...

Page 221: ...Owners Manual 221 ...

Page 222: ...Owners Manual 222 ...

Page 223: ...Owners Manual 223 ...

Page 224: ...Owners Manual 224 ...

Page 225: ...Owners Manual 225 ...

Page 226: ...Owners Manual 226 ...

Page 227: ...Owners Manual 227 ...

Page 228: ...Owners Manual 228 ...

Page 229: ...Owners Manual 229 ...

Page 230: ...Owners Manual 230 ...

Page 231: ...Owners Manual 231 ...

Page 232: ...Owners Manual 232 ...

Page 233: ...Owners Manual 233 ...

Page 234: ...Owners Manual 234 ...

Page 235: ...Owners Manual 235 ...

Page 236: ...Owners Manual 236 ...

Page 237: ...Owners Manual 237 ...

Page 238: ...Owners Manual 238 ...

Page 239: ...Owners Manual 239 ...

Page 240: ...Owners Manual 240 ...

Page 241: ...Owners Manual 241 ...

Page 242: ...Owners Manual 242 ...

Page 243: ...Owners Manual 243 ...

Page 244: ...Owners Manual 244 ...

Page 245: ...Owners Manual 245 ...

Page 246: ...Owners Manual 246 ...

Page 247: ...Owners Manual 247 ...

Page 248: ...Owners Manual 248 ...

Page 249: ...Owners Manual 249 ...

Page 250: ...Owners Manual 250 ...

Page 251: ...Owners Manual 251 ...

Page 252: ...Owners Manual 252 ...

Page 253: ...Owners Manual 253 ...

Page 254: ...Owners Manual 254 ...

Page 255: ...Owners Manual 255 ...

Page 256: ...Owners Manual 256 ...

Page 257: ...Owners Manual 257 ...

Page 258: ...Owners Manual 258 ...

Page 259: ...Owners Manual 259 ...

Page 260: ...Owners Manual 260 ...

Page 261: ...Owners Manual 261 ...

Page 262: ...Owners Manual 262 ...

Page 263: ...Owners Manual 263 ...

Page 264: ...Owners Manual 264 ...

Page 265: ...Owners Manual 265 ...

Page 266: ...Owners Manual 266 ...

Page 267: ...Owners Manual 267 ...

Page 268: ...Owners Manual 268 ...

Page 269: ...Owners Manual 269 ...

Page 270: ...Owners Manual 270 ...

Page 271: ...Owners Manual 271 ...

Page 272: ...Owners Manual 272 ...

Page 273: ...Owners Manual 273 ...

Page 274: ...Owners Manual 274 ...

Page 275: ...Owners Manual 275 ...

Page 276: ...Owners Manual 276 ...

Page 277: ...Owners Manual 277 ...

Page 278: ...Owners Manual 278 ...

Page 279: ...Owners Manual 279 ...

Page 280: ...Owners Manual 280 ...

Page 281: ...Owners Manual 281 ...

Page 282: ...Owners Manual 282 ...

Page 283: ...Owners Manual 283 ...

Page 284: ...Owners Manual 284 ...

Page 285: ...Owners Manual 285 ...

Page 286: ...Owners Manual 286 ...

Page 287: ...Owners Manual 287 ...

Page 288: ...Owners Manual 288 ...

Page 289: ...Owners Manual 289 ...

Page 290: ...Owners Manual 290 ...

Page 291: ...Owners Manual 291 ...

Page 292: ...Owners Manual 292 ...

Page 293: ...Owners Manual 293 ...

Page 294: ...Owners Manual 294 ...

Page 295: ...Owners Manual 295 ...

Page 296: ...Owners Manual 296 ...

Page 297: ...Owners Manual 297 ...

Page 298: ...Owners Manual 298 ...

Page 299: ...Owners Manual 299 ...

Page 300: ...Owners Manual 300 ...

Page 301: ...Owners Manual 301 ...

Page 302: ...Owners Manual 302 ...

Page 303: ...Owners Manual 303 ...

Page 304: ...Owners Manual 304 ...

Page 305: ...Owners Manual 305 ...

Page 306: ...Owners Manual 306 ...

Page 307: ...Owners Manual 307 ...

Page 308: ...Owners Manual 308 ...

Page 309: ...Owners Manual 309 ...

Page 310: ...Owners Manual 310 ...

Page 311: ...Owners Manual 311 ...

Page 312: ...Owners Manual 312 ...

Page 313: ...Owners Manual 313 ...

Page 314: ...Owners Manual 314 ...

Page 315: ...Owners Manual 315 ...

Page 316: ...Owners Manual 316 ...

Page 317: ...Owners Manual 317 ...

Page 318: ...Owners Manual 318 ...

Page 319: ...Owners Manual 319 ...

Page 320: ...Owners Manual 320 ...

Page 321: ...Owners Manual 321 ...

Page 322: ...Owners Manual 322 ...

Page 323: ...Owners Manual 323 ...

Page 324: ...Owners Manual 324 ...

Page 325: ...Owners Manual 325 ...

Page 326: ...Owners Manual 326 ...

Page 327: ...Owners Manual 327 ...

Page 328: ...Owners Manual 328 ...

Page 329: ...Owners Manual 329 ...

Page 330: ...Owners Manual 330 ...

Page 331: ...Owners Manual 331 ...

Page 332: ...Owners Manual 332 ...

Page 333: ...Owners Manual 333 ...

Page 334: ...Owners Manual 334 ...

Page 335: ...Owners Manual 335 ...

Page 336: ...Owners Manual 336 ...

Page 337: ...Owners Manual 337 ...

Page 338: ...s Manual 338 Section 1 ENGINE MOUNTING Engine Mounting Flexible Engine Mounting Engine Mounts Engine Alignment Checking Stringer Height Suspending the Engine Power Steering Hose Routing Exhaust Hose Routing ...

Page 339: ...e bed or stringers should be constructed in such way as to allow even weight distribution and load transfer Cross braces on the engine bed or stringers may be desired in certain applications to prevent lateral movement of the engine This bracing limits hull vibration and reduces stress on engine casting such as mounts Please mount the engine with possibility for future adjustments ...

Page 340: ...ngine vibrations The rear of the engine mounts to the stern drive transom plate or transmission IMPORTANT do NOT use solid engine mounts doing so will cause severe engine damage and void warranty Engine Mounts Engine mount Description BUKH offers heavy duty SOLAS flexible mounting as an option for BUKH V8 series engines Engines mount Drawing Description Drawing shows key measures ...

Page 341: ...arboard front to port rear The strings should lightly touch where they cross If not corrections should be made to the engine bed Suspending the Engine Lifting bracket Lifting bracket Description Picture of engine lifting brackets Front and rear lifting brackets on the engine are provided to allow attachment of a suitable sling The engine can then be lifted into position in boat using an overhead h...

Page 342: ...over tighten fittings Power steering fluid hoses must be purchased separately Proper routing and installation of the hoses is required to avoid problems related to power steering system Observe the following Hoses must be secured to avoid contact with moving components Torque both power steering hose fittings to 15 Nm after connecting to control valve Avoid stress on the hose fittings and avoid be...

Page 343: ...n engine is directly related to the amount of exhaust that can flow out of the exhaust system For example engines will generally suffer approximately a 10 horsepower loss for the first 1 psi 7 kPa of exhaust back pressure Exhaust Elbow Height A Measurement Between Straight Edge And Top Of Exhaust Elbow B Measurement Between Straight Edge And Water Line Measurement Raiser to waterline B A Minimum 3...

Page 344: ...be continuously sloping so that a low spot does not exist at any point in the exhaust hose or pipe The exhaust system on V8 engines must have a minimum of 6 downward slope between the exhaust elbow outlet and the exhaust outlet of the boat The exhaust system on V8 engines must have a minimum of 130 mm of vertical drop between the exhaust elbow outlet and the exhaust outlet of the boat Minimum exha...

Page 345: ...Owners Manual 345 Section 2 ENGINE COMPARTMENT Engine Compartment Engine Compartment Ventilation Combustion Air Requirements ...

Page 346: ...on air Maintain a low temperature in the engine compartment Sufficient Ventilation of air and fumes in the engine compartment Fresh air should enter the engine compartment as low as possible and the heated air should be discharged from the highest point When sufficient ventilation is not provided too much heat can build up inside the engine compartment and cause vapor locking The engine will not r...

Page 347: ...s lighter than cold air and will exit at the top of the compartment Once the engine is shut down such a system will auto ventilate until the engine bay temperature is at ambient level Combustion Air Requirements Engine compartments with natural draft ventilation must have vent openings of sufficient size and location to accomplish the tasks previously outlined A B ...

Page 348: ...factor from HP to KW is 0 735 Example for BUKH V8 500 Recommended open ventilation area for combustion air only is 1 7 x 500 HP x 0 735 620 cm2 For engine combustion air only NOT total engine compartment ventilation requirement IMPORTANT The amount of vent area required according to boating standards NMMA ABYC etc and Coast Guard regulations for complete total engine compartment ventilation must i...

Page 349: ...3 FUEL DELIVERY SYSTEM Fuel Delivery System Fuel Tank Fuel Lines Additional Fuel Filter Usage Fuel Line Fitting Installation Fuel Return Fitting Requirements Water Separating Fuel Filter Fuel System Temperature and Pressure Drop ...

Page 350: ... of the fuel tank in the boat due to the broad range of possible configurations Refer to information from the tank manufacturer as well as boating standards NMMA ABYC etc and Coast Guard regulations for complete guidelines Only a few points related to function and safety are listed here All connections should be on the upper side of the tank The tank ventilation pipe must have an inner diameter of...

Page 351: ...e following additional fuel connection related points applying to all engines unless otherwise stated must be considered Refer to boating standards NMMA ABYC etc Coast Guard regulations and or your countries regulatory agency for complete guidelines Fuel lines must be Coast Guard approved USCG Type A1 All fuel lines to engine shall be at least Ø12 mm inner diameter All fuel return lines from engin...

Page 352: ...oast Guard The maximum measured vacuum at the engine s fuel inlet must not exceed 2 inch Hg 6 8 kPa at idle engine speed and full throttle engine speed Additional Fuel Filter Usage CAUTION The engine fuel pump and factory installed water separating fuel filter have been carefully designed to function properly together Do not install additional fuel filters and or water separating fuel filters betw...

Page 353: ...nch DO NOT OVER TIGHTEN To prevent over tightening when installing a fuel line the brass fittings should be held with a suitable wrench as fuel line connectors are tightened securely Fuel Return Fitting Requirements Return fuel line is recommended to be Ø10 mm and must end in the top of the fuel tank There must be no restrictions on the fuel return system Water Separating Fuel Filter The engine mu...

Page 354: ... and therefore cause a greater fuel pressure drop The design of the fuel system should always take into account the highest engine output offered in the boat Doing this will help prevent performance problems related to fuel supply Air temperature and the RVP Reid Vapor Pressure of the fuel also play an important role in fuel system performance Higher air temperature can cause higher fuel line temp...

Page 355: ...ners Manual 355 Section 4 COOLING SYSTEM Cooling System Seawater Supply and Hose Connections Through The Hull or Transom Seacock Seawater Filter Seawater Pump and Bracket Drive Belt Routing Water Heaters ...

Page 356: ...priately to supply the engine with sufficient sea water under all operating conditions Observe the following information Seawater Supply and Hose Connections Seawater Supply Specifications Seawater Pickup through the hull or transom Minimum Flow Rate 230 liters per minute Seawater Pickup Hose Wire Reinforced Inner Diameter Ø40 mm Seacock Size Ø40 mm Seawater Strainer Minimum Flow 230 liters per mi...

Page 357: ...al area equal to or greater than seawater inlet hose to prevent restricting water flow Pickup must be located on the boat in an area that permits an uninterrupted flow of water to the pickup Be sure to make hose connections with double hose clamps Typical Through the Hull Pickup Typical Through the Transom Pick up a Through the Hull Pickup b Seacock c Through the Transom Pickup d Water Flow IMPORT...

Page 358: ...n Be sure to make hose connections with double hose clamps Secure hose to prevent contact with any moving parts Seacock Seacock seawater inlet valve if used must be installed between seawater pickup and seawater pickup pump or sea strainer to allow operator to shut off the seawater to flush or drain the engine or clean the sea strainer while boat is in the water Valve used must have an internal cr...

Page 359: ...e it will be easily accessible for inspection and cleaning Strainer must be installed in water inlet hose after the seacock water inlet valve to allow operator to shut off water when cleaning strainer Hose connections must be made with double hose clamps Secure hose to prevent contact with any moving parts Seawater Pump and Bracket Seawater pump and bracket Description The seawater pump is install...

Page 360: ...Owners Manual 360 Drive Belt Routing Drive belt routing Description The drive belt routing on one configuration of a BUKH V8 series engine ...

Page 361: ...Owners Manual 361 Drive Belt Routing Configurations BUKH V8 without Power Steering BUKH V8 with Power Steering ...

Page 362: ... with the supply and return connections CAUTION Avoid engine overheating which could result in engine damage On models equipped with Closed Cooling an air pocket may form in the closed cooling system if some coolant is lost from the system and the cabin heater or hot water is mounted higher than the fill cap on the heat exchanger Heater must be mounted lower than the fill cap of the heat exchanger...

Page 363: ...Owners Manual 363 Section 5 BATTERY and CONTROL Battery Battery Cables Accessories ECU and Relay Box Warnings System and Alarms Control Panel ...

Page 364: ...e located as close to the engine as possible Each engine requires its own battery for normal operation Failure to do so will lead to an unstable voltage source The alternator may not charge the battery properly if two engines are connected to a single battery Battery leads should not be reversed for example positive to negative Battery minimum rating requirements depend on boat configuration and a...

Page 365: ...d flux solder as it may cause corrosion and a subsequent failure Starter cable The positive battery cable is connected to the battery positive terminal on the starter motor Charging and control power cable The positive battery pole is connected directly to the black terminal box on the engine This is done to ensure sufficient power to the engine control and to ensure charging of the battery Please...

Page 366: ...n the starter motor These leads must be equipped with the appropriate current overload protection Refer to the ABYC standards or applicable industry standards for more information Do not attach any accessory ground wires to engine block Accessory ground wires should only be attached to ground terminal on battery ...

Page 367: ...rness Picture of relay box Relay box Description Picture of relay box after black cap is removed Note position and color of fuses and pay attention to position of relays To ensure correct function of engine relays are not to be turned Fuse 3 is 20 A for the starter Fuse 4 is 10 A for the display Fuse space 7 is free Fuse 9 is 10 A for the fuel pump at tank Other fuses are for the engine Center rel...

Page 368: ...d immediately shut down the engine by turning the key to off position Control Panel Control panel Description Picture of control panel Panel with red emergency stop Ignition key and engine data display screen Please mount control panel covered from rain and vapour ...

Page 369: ...PREPARATION Pre Delivery Preparation Battery Connection Power Steering Boat in the Water Test Engine Idle Speed Wide Open Throttle Test Important Installation Notes Pre Delivery Checklist Cold Weather or Extended Storage Draining Instructions ...

Page 370: ...ures completed Battery Connection 1 Connect engine positive battery cable from the starter motor usually RED to positive battery terminal 2 Connect engine positive charging and control power cable from the connecter box to positive battery terminal 3 Connect engine negative battery cable from engine block usually BLACK to negative battery terminal 4 Ensure that all battery terminal connections are...

Page 371: ...ng unit or sterndrive unit turns the correct way 6 Inspect engine compartment for water oil fuel and exhaust leaks 7 Check power steering oil level 8 Turn steering wheel left port until it stops and continue to apply pressure If pump lugs engine speed drops and or power steering pump tone changes check the following a Check for an obstruction between gimbal ring and gimbal housing and all moving s...

Page 372: ...With engine shut off 3 Check lever positions and adjust the external lever cable Please do not adjust screws on engine lever 4 Still ensure engine is shut off 5 External throttle lever is set to full engine speed With engine shut off 6 Check lever positions and adjust the external lever cable Please do not adjust screws on engine lever Wide Open Throttle Test IMPORTANT To operate engine at full th...

Page 373: ... pump suction If the fuel feed hose line get flat from suction the engine will lose engine speed and performance instantly even if it may not run rough You MUST use double hose clamps on all fuel line fittings to prevent air penetrating into the fuel system Do NOT use Teflon tape or other to seal fuel or oil fitting use only Loctite 518 and use it on ALL fuel and oil fittings to prevent leakage or...

Page 374: ...ve inlets We have found that adding the through hull inlet ensures adequate water flow to the engine and prevents issues arising in the future The BUKH warranty does NOT cover engine overheat related problems It is HIGHLY recommended that the engine exhaust be run through the transom and NOT run exhaust through the sterndrive as this will lead to excessive back pressure It is MANDATORY that all V8...

Page 375: ...Owners Manual 375 Please see BUKH V8 Official Warranty Information and hand in a warranty registration form on www bukh dk ...

Page 376: ...ed must remain closed until engine is to be restarted to prevent water from flowing back into seawater cooling system If boat is not fitted with a seacock water inlet hose must be disconnected and plugged to prevent water from flowing into cooling system and or boat As a precautionary measure attach a tag to the ignition switch or steering wheel with the warning that the seacock must be opened or ...

Search results

Summary of Contents for V8 Series

Reviews:

Brands by name

Popular brands

Bukh V8 Series, Owner'S Manual

Search results

Summary of Contents for V8 Series

Reviews:

Brands by name

Popular brands