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Summary of Contents for Weber MPE 750 NA Marine
- Page 1 Service Manual MPE 750 NA Marine Closed Loop MPE 750 NA Marine - Closed Loop This service manual is valid for the following engine variants: • 402062_I2 749 MAR NA-66 DS V1 2007 1.1 402062_SHB_Rev1.1_080611...
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Page 2: Table Of Contents
Service Manual MPE 750 NA Marine Closed Loop Table of contents About this document 1.1 Meaning of the symbols in the text Safety 2.1 Basic principle 2.2 Meaning of the safety symbols 2.3 General safety instructions Description 3.1 Technical specifications 3.2 Serial number 3.3 Operating materials 3.4 Running in the engine 3.5 Operating the engine without sea water Maintenance 4.1 Maintenance work by the user of the vehicle 4.2 Maintenance intervals 4.3 Decommissioning at the end of the season Motor oil and oil filter 4.5... -
Page 3: About This Document
Service Manual MPE 750 NA Marine Closed Loop About this document This chapter will familiarize you with the structure of this document so that you can find the information it contains quickly and easily. This document uses symbols and signs that allow you to find information quickly. Please read the explanations of the symbols and signs in this chapter. Be sure to read all safety... -
Page 4: Safety
Service Manual MPE 750 NA Marine Closed Loop Safety Basic principle This engine is state-of-the-art and built according to recognized safety-technical regulations. Nevertheless, people can be injured or the engine damaged if the safety instructions in this manual are disregarded. Only put the engine into operation if it is technically perfect. Faults that compromise the safety of people or of the engine must be eliminated immediately by trained service personnel. -
Page 5: General Safety Instructions
Service Manual MPE 750 NA Marine Closed Loop General safety instructions The engine may only be operated at idle speed for a maximum of 30 seconds without sea water. Engine damage due to overheating. ATTENTION See Chapter Operating the engine without sea water. Lift a submerged engine out of the water as quickly as possible and take it to a professional shop for maintenance within 24 hours. Belated... -
Page 6: Description
Service Manual MPE 750 NA Marine Closed Loop Description The MPE 750 Marine - Closed Loop is a 2-cylinder in-line engine. It is intended for recre- ational watercraft. It is not designed for constant loads at high speeds as can occur during races, for example. Technical specifications Type 2-cylinder parallel twin with vibration compensation shaft Displacement 749 cm³ Engine power 49 kW (66 PS) [66 HP] ISO 8178 7500 U/min [RPM] Max. speed 8000 U/min [RPM] Combustion system Intake-manifold fuel injection Injection regulation electronic Lubrication system Dry sump Cooling system Water-cooled with closed coolant circuit and open sea water cooling circuit Serial number The 8-digit serial number (1) serves to identify the engine. It is engraved in the... -
Page 7: Operating Materials
Service Manual MPE 750 NA Marine Closed Loop Operating materials The use of other operating materials causes damage to the engine and the voiding of the warranty. ATTENTION Fuel Fuel quality Unleaded gasoline according to DIN 51607 („super unleaded“), with an octane rating of at least 95 ROZ [RON] or 85 MOZ [MON]. In case of emergency, unleaded fuel with 91 ROZ [RON] or 82.5 MOZ [MON] may be used for a short time. Lower-quality fuels should only be used in case of emergency. If used regularly, they cause... - Page 8 Service Manual MPE 750 NA Marine Closed Loop Coolant Coolant additive Coolant additive based on ethylene glycol Silicate- and nitrite-free. Suitable for aluminium engines. Anti-freeze mixture 50 % water + 50 % coolant additive Manufacturer’s fill provides frost protection up to -37 °C [-34.6 °F] Recommended minimum frost protection up to -30 °C [-22 °F] Fill quantity 3,3 liters [3.5 qt (US)] Approved coolant additives BASF Glysantin G 30...
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Page 9: Running In The Engine
Service Manual MPE 750 NA Marine Closed Loop Running in the engine Weber Automotive GmbH recommends that during the first five hours of operation, you should not operate the engine over 6,000 U/min [RPM]. This protective running-in has a positive effect on the engine‘s lifespan. Operating the engine without sea water If it is necessary to operate the engine longer than 30 seconds without sea water, the vehicle‘s rinsing equipment must be used. -
Page 10: Maintenance
During the warranty period, maintenance and repair work may only be carried out in Weber Motor service stations or in associated shops. If necessary, contact your vehicle dealer. Weber Automotive GmbH reserves the right to demand that proof of warranty be provided in writing for warranty service. See Proof of maintenance for work carried out. The vehicle owner or user is responsible for adhering to the maintenance intervals. Weber Automotive GmbH assumes no liability for damage ATTENTION that arises due to maintenance not carried out. 402062_SHB_Rev1.1_080611 Page 8... -
Page 11: Maintenance Work By The User Of The Vehicle
Connect the Flush kit. Start engine and operate only in idle. Do not accelerate. Ensure the water supply within 30 seconds. See Chapter Operating the engine without sea water. The Weber Automotive GmbH recommends to flush the sea water cooling circuit for one minute minimum. Discontinue water supply. Stop engine within 30 seconds. Remove the flush kit. Only flush engine while running, otherwise water from the exhaust can enter engine and cause damage. -
Page 12: Maintenance Intervals
Service Manual MPE 750 NA Marine Closed Loop Maintenance intervals Activities on the engine must be carried out by trained service personnel. mainte- nance Maintenance interval after 25 every 50 every 100 Motor oil and oil Change ■ ■ ■ filter Coolant Change ■ every 4 years Check / ■ clean Spark plugs Change ■ Check / Valve play ■... -
Page 13: Decommissioning At The End Of The Season
Service Manual MPE 750 NA Marine Closed Loop Decommissioning at the end of the season The decommissioning of the vehicle is necessary ..at the end of the season if the vehicle will be decommissioned during the winter months..if the vehicle will not be used for more than 30 days. In addition to the maintenance work described in the maintenance interval table under end of the season, various other service work is also required. -
Page 14: Motor Oil And Oil Filter
Service Manual MPE 750 NA Marine Closed Loop Motor oil and oil filter Oil level check Use a clean, lint-free cloth The oil level must be measured with oil warm from operation (approx. 80 °C [176 °F]) and with the motor at a standstill. Measurements with cold oil are not meaningful. The desired motor temperature is achieved after a driving time of... - Page 15 Service Manual MPE 750 NA Marine Closed Loop Oil level check (continuation) Unscrew the oil dipstick (1) from the oil tank and wipe it clean with a cloth. Replace the oil dipstick in the oil tank. Do not screw it in. Then remove it again and read the oil level. With a motor warm from operation, the oil level must be just below the MAX marking.
- Page 16 Service Manual MPE 750 NA Marine Closed Loop Changing the motor oil and oil filter Oil extraction pump Catch basin for old oil, fill volume at least 4 liters [4.3 qt (US)] Flathead screwdriver or wrench to open the screw clamps Torque wrench to close the screw clamps Torque wrench SW27 [1 1/16 “] for oil filter cover...
- Page 17 Service Manual MPE 750 NA Marine Closed Loop Draining the motor oil (continuation) The motor oil in the dry sump tank is pumped out with the help of the engine dry sump pump. Remove the cable harness from the spark plugs and the injection valves. See Chapter Removing the spark plugs. Remove the oil feed hose (2) on one side of the oil tank. If necessary, extend the oil feed hose. Tightening torque: 3 Nm ± 10 % [2.2 ft. lb.]...
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Page 18: Changing The Oil Filter
Service Manual MPE 750 NA Marine Closed Loop Changing the oil filter Unscrew the oil filter cover (3). Tightening torque: 24 Nm ± 10 % [17.7 ft. lb.] Replace the oil filter (4) and O-ring (5). 11) Coat the O-ring (5) lightly with motor oil. During reassembly, make sure that the oil filter snaps in. - Page 19 Service Manual MPE 750 NA Marine Closed Loop Refilling the motor oil 12) Fill oil tank with 2.5 liters of motor oil. 13) Close the oil tank with the oil dipstick. 14) Warm up the motor in a body of water for approx. 10 minutes at 4000 - 4500 U/min.
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Page 20: Engine Cooling Circuit
Service Manual MPE 750 NA Marine Closed Loop Engine cooling circuit Coolant level check Check the coolant level with a cold engine. With a cold engine, the coolant level should be between the MIN and MAX markings (1) of the compensation tank. If you must refill the coolant, see Chapter Refilling the coolant. -
Page 21: Changing The Coolant
Service Manual MPE 750 NA Marine Closed Loop Changing the coolant Catch basin for the coolant, fill volume at least 4 liters [4.3 qt (US)] Flathead screwdriver or wrench to open the screw clamps Torque wrench to close the screw clamps Funnel tube for coolant Coolant, see chapter Operating materials Draining the coolant Open the c over o f t he c ompensation tank (1). - Page 22 Service Manual MPE 750 NA Marine Closed Loop Draining the coolant (continuation) Remove the screw clamps, hoses (2) on both sides and drain coolant. Tightening torque: 3 Nm ± 10 % [2.2 ft. lb.] Tighten the screw clamps after one to three hours. Assembly occurs in reverse order. Please note instructions after this symbol 402062_SHB_Rev1.1_080611 Page 20...
- Page 23 Service Manual MPE 750 NA Marine Closed Loop Refilling the coolant Open the c over o f t he c ompensation tank. See Chapter Draining the coolant. Add new coolant up to the MAX marking of the compensation tank. See Chapter Coolant level check.
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Page 24: Spark Plugs
Service Manual MPE 750 NA Marine Closed Loop Spark plugs Checking the spark plugs Socket wrench SW16 [5/8 “] Feeler gauge, measurement range 0.77 mm - 0.91 mm [0.0303 - 0.0358 in.] Torque wrench 2x spark plugs, see spare parts catalogue Removing the spark plugs Remove cable harness on the ignition coils (1). Remove the cable harness on the injection valves (2). Before disassembling, make sure that the plugs of the ignition coils and the injection valves are not switched during assembly. 402062_SHB_Rev1.1_080611 Page 22... - Page 25 Service Manual MPE 750 NA Marine Closed Loop Removing the spark plugs (continuation) Remove the screws and washers (3). Remove the ignition coils (4) Install the spark plugs only in a cold engine. Grease the threads of the spark plugs with commercial graphite grease. Tightening torque: 10 Nm ± 10 % [7.4 ft. lb.] Unscrew the spark plugs (5). Tightening torque: 27 Nm ± 20 % [19.9 ft. lb.] Assembly occurs in reverse order. Please note instructions after this ...
- Page 26 Service Manual MPE 750 NA Marine Closed Loop Checking the spark plugs Check the electrode distance of the spark plugs with the help of the feeler gauge. 0,77 - 0,91 mm [0.0303 - 0.0358 in.] 402062_SHB_Rev1.1_080611 Page 24...
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Page 27: Valve Play
Service Manual MPE 750 NA Marine Closed Loop Valve play Checking and setting the valve play Hex wrench SW5 [3/16 “] Feeler gauge, measurement range 0.08 mm - 0.25 mm [0.0031 - 0.0098 in.] Valve adjustment tool, see spare parts catalogue Combination wrench 24mm [15/16 “] Bar magnet Measurement tool for adjustment plate, reading 0.01mm [0.0003 in.] Adjustment plates from 2.5 - 3.7 mm [0.0984 - 0.1457 in.], see spare parts catalogue Valve cover seals, see spare parts catalogue 2x O-rings, see spare parts catalogue To get correct measurement valves, check and adjust valve play with a cold engine. Removing the valve cover Remove the cable harness on the cam shaft sensor (1). Remove the spark plugs. See Chapter Removing the spark plugs. 402062_SHB_Rev1.1_080611 Page 25... - Page 28 Service Manual MPE 750 NA Marine Closed Loop Removing the valve cover (continuation) Unscrew the valve cover (2) along with bracket and valve (3). Tightening torque: 10 Nm ± 10 % [7.4 ft. lb.] The sequence of the connection occurs according figure. Replace the valve cover seals (4). Clean seal areas of the valve cover and cylinder head. Assembly occurs in reverse order. Please note instructions after this ...
- Page 29 Service Manual MPE 750 NA Marine Closed Loop Desmontar la tapa de válvula Checking the valve play of the first cylinder Start the vehicle’s starter and let Exhaust side the engine crank until both cams of the second cylinder are pointing upwards. The rocker of the first cylinder demonstrates a little play.
- Page 30 Service Manual MPE 750 NA Marine Closed Loop Adjusting the valve play To adjust the valve play on the intake side, it is necessary to remove the fuel distributor rail. Remove the cable harness on the coolant sensor (7). Loosen the screws and washers (8) and remove the fuel distributor rail (9). Tightening torque: 10 Nm ± 10 % [7.4 ft. lb.] 402062_SHB_Rev1.1_080611...
- Page 31 Service Manual MPE 750 NA Marine Closed Loop Adjusting the valve play (continuation) Replace the O-rings (9) on the injector valves. Coat the O-rings lightly with motor oil. Mount the valve adjustment tool (11) with two screws. Tightening torque: 10 Nm ± 10 % [7.4 ft. lb.] The engine may not be turned over until all valve plays of the first cylinder are adjusted. ATTENTION 402062_SHB_Rev1.1_080611 Page 2...
- Page 32 Service Manual MPE 750 NA Marine Closed Loop Adjusting the valve play (continuation) Press the rocker downwards with a 24 combination wrench (12). 10) Clamp both valves by pressing in the sliding piece (13). 11) Remove the adjustment plate with the bar magnet. 12) Measure the strength of the adjustment plate and replace with an adjustment plate with which the permissible tolerance is adhered 13) Replace the adjustment plate in the spring seat.
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Page 33: Malfunctions
Service Manual MPE 750 NA Marine Closed Loop Malfunctions If you cannot correct a malfunction yourself using the table below, contact your vehicle dealer‘s customer service. In case of improperly-made repairs, the warranty is voided and Weber Automotive GmbH is not liable for any resulting subsequent damage. Engine does not crank Possible cause Remedy Main power switch not plugged in. Plug in main power switch. Battery voltage too low. Remove soiling and corrosion on the battery poles and connect battery connections - Open-circuit voltage < 12 volts. correctly. - During activation of the starter With non maintenance-free batteries, check < 10.5 volts. - Page 34 Service Manual MPE 750 NA Marine Closed Loop Engine cranks but does not start Possible cause Remedy Lanyard not plugged in. Plug in lanyard. Defective fuse. Check the fuses in the cable harness. Too little or no fuel in the tank. Fill up fuel. Check the engine for signs of leaky fuel lines and, if necessary, have it checked by a professional shop. Cable harness plug connections not Check plug connections. plugged in or not plugged in correctly. Spark plugs defective. Check the spark plugs and, if necessary, replace them. See Chapter Spark plugs.
- Page 35 Service Manual MPE 750 NA Marine Closed Loop Engine stalls and cannot be started again Possible cause Remedy Lanyard not plugged in. Plug in lanyard. Defective fuse. Check the fuses in the cable harness. Too little or no fuel in the tank. Fill up fuel. Check the engine for signs of leaky fuel lines and, if necessary, have it checked by a professional shop. Cable harness plug connections not Check plug connections. plugged in or not plugged in correctly. Spark plugs defective. Check the spark plugs and, if necessary, replace them. See Chapter Spark plugs.
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Page 36: Terminology
Service Manual MPE 750 NA Marine Closed Loop Terminology Adjusting the valve play 28 Serial number 4 Submerged engine 3 Changing the coolant 19 Changing the oil filter 16 Technical specifications 4 Checking the spark plugs 24 Checking the valve play 27 Coolant 6 Coolant level check 18 Decommissioning at the end of the season 11 Draining the coolant 19 Draining the motor oil 14 Flush sea water cooling circuit after driving 9 Fuel 5 Lubricant 5 Maintenance intervals 10 Maintenance work by the user of the vehicle 9 Malfunctions 31 Oil level check 12 Operating materials 5 Operating the engine without sea water... -
Page 37: Appendix
Manufacturer Weber Automotive GmbH Address Otto-Lilienthal-Str.5 88677 Markdorf Germany Internet www.weber-automotive.com Engine I2 749 MAR NA-66 DS V1 2007 1.1 Engine family WEBM.750NG (EU family designation) 8WEBM.7508NG (USA family designation, adjusted to the model year annually) Directives Weber Automotive GmbH thus confirms that the construction of the engine corresponds to the following pertinent conditions: – EU directive about sport boats 94/25/EG with addendum 2003/44/EG – USA EPA Federal Register 40 CFR Part 91 – USA CARB 13 California Code of Regulation Article 4.7 Spark Ignition Marine Engines 402062_SHB_Rev1.1_080611 Page 5... -
Page 38: Exhaust Type Authorizations
Service Manual MPE 750 NA Marine Closed Loop Exhaust type authorizations Type test center Europe Germanischer Lloyd Type test center USA EPA (United States Environmental Protection Agency) The output of the motor is 49 kW. All originals are present and can be viewed at any time. They can be called up on the Internet at www.weber-automotive.com. Appendices to this service manual: „Declaration of Conformity for Recreational Craft Propulsion Engines“ „California Emission Control Warranty Statement“ 402062_SHB_Rev1.1_080611 Page 6... -
Page 39: Proof Of Maintenance For Work Carried Out
Service Manual MPE 750 NA Marine Closed Loop Proof of maintenance for work carried out _ _ _ _ _ _ _ _ _ _ _________________ Motor - serial number (8-digit) Date of initial registration Work carried out: Work carried out: Motor oil change Motor oil change Oil filter change ... - Page 40 Service Manual MPE 750 NA Marine Closed Loop Work carried out: Work carried out: Motor oil change Motor oil change Oil filter change Oil filter change Date: Date: Spark plug change Spark plug change Valve play checked Valve play checked Status Status Valve play adjusted Valve play adjusted Hours of operation: Hours of operation: Coolant change Coolant change ....................
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