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Weber 4-Stroke Engine MPE 850 IND NA Service Manual

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SERVICE MANUAL
4-Stroke Engine
MPE 850 IND NA
This service manual is valid for the following engine variants:
– 406555
406555_SHB
Rev 1.0
10.07.2012
en_English
Read this service manual thoroughly before operating the engine
for the first time.

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  Summary of Contents for Weber 4-Stroke Engine MPE 850 IND NA

  • Page 1 SERVICE MANUAL 4-Stroke Engine MPE 850 IND NA This service manual is valid for the following engine variants: – 406555 406555_SHB Rev 1.0 Read this service manual thoroughly before operating the engine 10.07.2012 for the first time. en_English...
  • Page 3 - Translation of the original service manual - Weber Motor GmbH strives to make continual improvements as part of the ongoing technical development of its products. All documentation is therefore subject to technical modifications. Reprints and translations, in whole or in part, require written permission from Weber Motor GmbH.
  • Page 4: Table Of Contents

    8.2.1 Weber Motor service case ........
  • Page 5: Shb Mpe850 Rev 1.1 | 406555

    Table of contents 8.3.1 Changing engine oil ..........27 8.3.2 Replacing oil filter .
  • Page 6: About This Document

    – If you sell the portable fire pump, always pass on the service manual to the new owner. – The latest version of the service manual is available for download in other languages from our web site www.weber-motor.com. – Always read the portable fire pump manufacturer‘s documentation.
  • Page 7: Safety

    2 Safety 2.1 Meaning of the safety alert symbol and signal words Safety This engine is state-of-the-art and built according to recognized safety-technical regulations. Ignoring the information in this service manual may result in personal injury or property damage. Read and observe the following safety messages carefully before operating the engine for the first time. Observe all generally applicable laws and regulations in addition to the information in this service manual: –...
  • Page 8: Important Safety Messages

    ► All service tasks described in chapter 8 Service tasks in the workshop must be performed by a workshop authorized by Weber Motor or the portable fire pump manufacturer. Malfunctions Engine malfunctions pose a safety risk to personnel.
  • Page 9 Never fill with fuel while the engine is running. ► Do not start the engine if there is a smell of fuel or you suspect that fuel is leaking. Have a workshop authorized by Weber Motor or the portable fire pump manufacturer inspect the engine immediately. ►...
  • Page 10 2 Safety 2.2 Important safety messages California Proposition 65 Warning against chemicals/hazardous materials according to the law of the state of California. This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. SHB MPE850 Rev 1.1 | 406555 |...
  • Page 11: Description

    3 Description 3.1 Intended use | 3.2 Identification Description Intended use The MPE 850 IND NA has been designed for powering portable fire pumps. The engine was not designed or intended for any other use. Identification Each engine is assigned two identification numbers.
  • Page 12: Fuel

    See the portable fire pump manufacturer‘s documentation. In fo rmat i on ! Weber Motor recommends you always keep a supply of engine oil to hand. Consult your local portable fire pump dealer. SHB MPE850 Rev 1.1 | 406555 |...
  • Page 13: Coolant

    Chevron Havoline Extended Life Coolant XLC+B Valvoline Zerex G 30 In fo rmat i on ! Weber Motor recommends you always keep an adequate supply of ready mixed coolant to hand. Consult your local portable fire pump dealer. SHB MPE850 Rev 1.1 | 406555 |...
  • Page 14: Engine Components And Information

    3 Description 3.6 Engine components and information Engine components and information – Coolant circuit vent – Exhaust ducts – Oil filter – Coolant circuit to the heat exchanger – Coolant circuit from the heat exchanger – Engine oil supply – Engine oil return –...
  • Page 15: Technical Specifications

    3 Description 3.7 Technical specifications Technical specifications Type 4-stroke gasoline engine, parallel twin with balance shaft and overhead camshaft (SOHC) Displacement 846 cm³ Number of cylinders 89 mm x 68 mm [3.5 in x 2.7 in] Bore x stroke Compression ratio 11,5 : 1 Engine power Godiva 1710: 42 kW [57 PS] @ 5600 min...
  • Page 16: Operation

    4 Operation 4.1 Service intervals Operation Familiarize yourself with the portable fire pump before operating the engine. Read the portable fire pump manufacturer‘s documentation. Service intervals In order to keep your engine in a safe operating condition, regular servicing is essential. The following service tasks can be performed by trained mechanics.
  • Page 17 4 Operation 4.1 Service intervals The following service tasks require mechanical knowledge and special technical knowledge of this engine. These service tasks must be performed in a workshop authorized by Weber Motor or the portable fire pump manufacturer. subsequent service intervals...
  • Page 18: Operation During The Break-In Period

    4 Operation 4.2 Operation during the break-in period Operation during the break-in period The way you operate the engine during the first five hours of operation is a major factor in achieving the required performance and extending the service life of the engine. Observe the following points to ensure that the engine parts break in properly: Avoid Engine speeds over 5500 min-1 [rpm]...
  • Page 19: Before Operation

    4 Operation 4.3 Before operation Before operation 4.3.1 Checking coolant level See the portable fire pump manufacturer‘s documentation. Danger of overheating caused by a lack of coolant. Insufficient coolant leads to deformation, stress cracking and leaks in the cylinder head gasket. The increase in pressure will cause the hoses to leak.
  • Page 20: Special Scenarios

    Preparations for storage require special technical knowledge. Preparations must be performed in a workshop authorized by Weber Motor or the portable fire pump manufacturer. SHB MPE850 Rev 1.1 | 406555 |...
  • Page 21: Malfunctions

    6 Malfunctions Malfunctions In the event of a malfunction, please contact a workshop authorized by Weber Motor or the portable fire pump manufacturer immediately. SHB MPE850 Rev 1.1 | 406555 |...
  • Page 22: Dealer And Servicing Network

    Locating a workshop An extensive global dealer and servicing network is available. The dealer and servicing network provides assistance with any queries relating to the engine. Visit our web site www.weber-motor.com for a list of all authorized Weber Motor workshops.
  • Page 23: Service Tasks In The Workshop

    ► All service tasks described in chapter 8 Service tasks in the workshop must be performed by a workshop authorized by Weber Motor or the portable fire pump manufacturer. Service manual Before reading chapter 8 Service tasks in the workshop, you must have read and understood all other information in the service manual.
  • Page 24: Tools And Accessories

    8.2 Tools and accessories Tools and accessories 8.2.1 Weber Motor service case Weber Motor offers a service case that contains the following service parts. Visit your local portable fire pump dealer or our web site www.weber-motor.com for more information. Figure Description...
  • Page 25: Equipment Workshop

    8 Service tasks in the workshop 8.2 Tools and accessories 8.2.2 Equipment workshop In addition to the service case, you will require the following tools and accessories for service tasks. The figures are only examples of suitable tools. All tools and accessories are available from specialist retailers. Figure Description Figure...
  • Page 26: Supplies

    8 Service tasks in the workshop 8.2 Tools and accessories 8.2.3 Supplies You will require the following supplies to perform service tasks. Unless otherwise specified, use the products as directed by the manufacturer. All supplies are available from specialist retailers. Supplies Recommended products Anti-Seize assembly paste for lubricating threaded...
  • Page 27: Changing Engine Oil And Oil Filter

    8 Service tasks in the workshop 8.3 Changing engine oil and oil filter Changing engine oil and oil filter 8.3.1 Changing engine oil See the portable fire pump manufacturer‘s documentation. 8.3.2 Replacing oil filter – Protective gloves – Universal strap wrench –...
  • Page 28: Checking And Adjusting Valve Play

    8 Service tasks in the workshop 8.4 Checking and adjusting valve play Checking and adjusting valve play 8.4.1 Checking valve play – Sealing kit valve cover – Anti-Seize assembly paste – Hexagon screwdriver – Serrated lock washers – Hexagon screwdriver 5 mm socket 5 mm –...
  • Page 29 8 Service tasks in the workshop 8.4 Checking and adjusting valve play In fo rmat i on ! The camshaft is turned using the crankshaft. The portable fire pump manufacturer has devised a suitable procedure for this. Read the portable fire pump manufacturer‘s documentation for more information.
  • Page 30 8 Service tasks in the workshop 8.4 Checking and adjusting valve play Checking the valve play on the 1st cylinder ► Turn the camshaft until the position of the camshaft is as illustrated. (See the portable fire pump manufacturer‘s documentation.) The camshaft is marked at the 2nd cylinder end only.
  • Page 31 8 Service tasks in the workshop 8.4 Checking and adjusting valve play ► Clean the sealing surface with sealing surface cleaner. ► Put the valve cover ► Apply Anti-Seize assembly paste to all bolts ► Tighten the bolts in the sequence shown Tightening torque: 8 Nm +2 Nm [5.9 lbf ft +1.5 lbf ft] ►...
  • Page 32: Adjusting Valve Play With Valve Adjustment Kit

    8 Service tasks in the workshop 8.4 Checking and adjusting valve play 8.4.2 Adjusting valve play with valve adjustment kit – Valve adjustment shims – Valve adjustment kit – Hexagon screwdriver – Caliper – Hexagon screwdriver 5 socket 5 – Bar magnet –...
  • Page 33 8 Service tasks in the workshop 8.4 Checking and adjusting valve play Adjusting the valve play on the 1st cylinder ► Turn the camshaft until the position of the camshaft is as illustrated. (See the vehicle manufacturer‘s documentation.) The camshaft is marked at the 2nd cylinder end only.
  • Page 34 8 Service tasks in the workshop 8.4 Checking and adjusting valve play ► Position the rocker arm pusher on the rocker arm ► Press down the slide plate using the rocker arm pusher until the pin engages. ► Remove the valve adjustment shim using a bar magnet.
  • Page 35 8 Service tasks in the workshop 8.4 Checking and adjusting valve play ► Hold the rocker arm pusher in position. ► Press down the slide plate slightly using the rocker arm pusher. ► Slide the pin forward by hand. ► Slowly release the rocker arm pusher.
  • Page 36: Adjusting Valve Play Without Special Tool

    8 Service tasks in the workshop 8.4 Checking and adjusting valve play 8.4.3 Adjusting valve play without special tool – Valve adjustment shims – Bar magnet – Caliper – Universal pliers In fo rmat i on ! The camshaft is turned using the crankshaft. The portable fire pump manufacturer has devised a suitable procedure for this.
  • Page 37 8 Service tasks in the workshop 8.4 Checking and adjusting valve play Adjusting the valve play on the 1st cylinder ► Turn the camshaft until the position of the camshaft is as illustrated. (See the vehicle manufacturer‘s documentation.) The camshaft is marked at the 2nd cylinder end only.
  • Page 38 8 Service tasks in the workshop 8.4 Checking and adjusting valve play ► Insert the new valve adjustment shim ► Hold the rocker arm in position. ► Check if the circlip is installed. ► Slide in the rocker axle ► Remove the cover from the chain channel.
  • Page 39: Replacing Spark Plugs

    6 Service tasks in the workshop 6.5 Replacing spark plugs Replacing spark plugs – Spark plugs – Reversible ratchet – Serrated lock washer – Hexagon screwdriver – Hexagon screwdriver 5 mm socket 5 mm – Torque wrench – Spark plug wrench Remove spark plugs with a cold engine.
  • Page 40 6 Service tasks in the workshop 6.5 Replacing spark plugs ► Insert the ignition coils ► Replace serrated lock washers Assemble the bolts , washers serrated lock washers as illustrated. Tightening torque: 8 Nm +2 Nm [5.9 lbf ft +1.5 lbf ft] ►...
  • Page 41: Checking Spark Plugs

    8 Service tasks in the workshop 8.6 Checking spark plugs Checking spark plugs – Serrated lock washer – Hexagon screwdriver – Spark plug brush – Hexagon screwdriver 5 mm socket 5 mm – Torque wrench – Spark plug wrench – Reversible ratchet –...
  • Page 42 8 Servicearbeiten in der Werkstatt 8.6 Zündkerzen prüfen ► If the electrodes are extremely sooty, clean carefully using a spark plug brush. ► Check the spark plug gap using a feeler gauge. Required spark plug gap: 0,69 – 0,84 mm [0.028 – 0.032 in] ►...
  • Page 43 8 Servicearbeiten in der Werkstatt 8.6 Zündkerzen prüfen ► Connect the wire harness connectors to the ignition coils ► Start the engine and allow to run for 1 – 2 minutes. SHB MPE850 Rev 1.1 | 406555 |...
  • Page 44: Changing Coolant

    8 Service tasks in the workshop 8.7 Changing coolant | … Changing coolant See the portable fire pump manufacturer‘s documentation. Replacing fuel filter See the portable fire pump manufacturer‘s documentation. SHB MPE850 Rev 1.1 | 406555 |...
  • Page 45: Preparing The Engine For Storage

    8 Service tasks in the workshop 8.9 Preparing the engine for storage Preparing the engine for storage – Engine internal preservative – Fuel stabilizer ► Change engine oil and oil filter (See chapter 8.3 Changing engine oil and oil filter.) ►...
  • Page 46: Disposal

    8 Service tasks in the workshop 8.10 Disposal 8.10 Disposal When disposing of operating materials, replaced parts or the whole engine, always comply with the relevant applicable national laws and guidelines. SHB MPE850 Rev 1.1 | 406555 |...
  • Page 47: Confirmation Of Service Tasks

    9 Confirmation of service tasks Confirmation of service tasks Have the workshop personnel provide certification confirming that your engine was serviced. You can use the following documents. _ _ _ _ _ _ _________________ Engine variant (6-digit) Date of initial registration _ _ _ _ _ _ _ _ Serial number (8-digit) Work carried out:...
  • Page 48 9 Confirmation of service tasks Work carried out: Work carried out:  Engine oil and oil filter  Engine oil and oil filter Date: Date: changed changed  Valve play checked  Valve play checked  Spark plugs replaced  Spark plugs replaced ...
  • Page 49: Appendix

    Appendix Engine manufacturer Appendix Engine manufacturer Engine manufacturer Weber Motor GmbH Otto-Lilienthal-Str. 5 88677 Markdorf Germany www.weber-motor.com SHB MPE850 Rev 1.1 | 406555 |...
  • Page 50: Index

    Appendix Index Index Service case, overview 24 Service intervals 16 Break-in period, engine 18 Spark plugs, check 41 Spark plugs, replace 39 Spark plugs, spark plug gap 41 Components, engine 14 Storage, preparation 45 Coolant, change 44 Supplies, overview 26 Coolant level, check 19 Coolant, specification 13 Technical specifications 15...

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Mpe 850 ind na