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ENGINE MANUAL
48iB2 / CS - 56i B2 / CS
48i B2
56i B2
www.3w-modellmotoren.com

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Summary of Contents for 3W 46i B2 / QS

  • Page 1 ENGINE MANUAL 48iB2 / CS - 56i B2 / CS 48i B2 56i B2 www.3w-modellmotoren.com...
  • Page 2 48iB2 / CS - 56i B2 / CS Engine Dear customer, Thank you for placing your confidence in 3W. Our long experience (since 1985) in designing and producing model airplane engines, ranging from single up to six cylinder, has been utilized to provide you with the best engine possible.
  • Page 3: Limited Warranty

    In case of defect during the period of garantee, return this product to your nearest 3W-Dealer or to 3W -Germany direct, at your costs. The garantee is limited to the value of the product. The guarantee does not cover any damage caused by misuse or neglect, accidents, abrasion, exposure to extreme temperatures, solvents, acids, water, normal wear and tear or damage by common carrier.
  • Page 4 For your safety and for the safety of those around you -- also to learn what is required to maintain your warranty - we strongly advise you to read this entire manual carefully BEFORE you start using the engine. Safe Operation and 3W's Conditional Warranty For safe operation and to maintain your warranty you must: •...
  • Page 5: Engine Installation

    Spacers can be made from hardwood dowels (3/4" to 1") or machined aluminum bar stock to adjust your down and side thrust. These spacers should go between the motor box and fuselage and not the motor box and engine. more infos: www.3w-modellmotoren.de...
  • Page 6: Engine Cooling

    The freely flowing, but directed and turbulent air between the fins provides the maximum cooling for an air cooled engine. Without baffling (meaning wood or more infos: www.3w-modellmotoren.de...
  • Page 7: Operating Temperature

    Important: The interior of the fuselage must be sealed to prevent damage from gasoline that sprays from the carburetor. Use a thin epoxy or other appropriate fuel proofing method. Do not overlook this step as gasoline will melt some materials like Styrofoam very quickly. more infos: www.3w-modellmotoren.de...
  • Page 8 Canister mufflers To prevent damage to the header(s) a flexible support bracket is required to mount the canister(s). The location for this bracket should be at the canister's center of gravity. 3W canisters have a reinforcement ring at this location.
  • Page 9: Carburetor Settings

    L: 1 1/2 Important: Do not remove the carburetor spring as the spring helps keep the carburetor butterfly aligned properly. Merely release the ends of the spring so that it no longer holds the butterfly closed. more infos: www.3w-modellmotoren.de...
  • Page 10: Carburetor Linkage

    The reason for this is that you are not getting the normal cooling effect that you would if the engine was in a model that was flying. more infos: www.3w-modellmotoren.de...
  • Page 11: Additional Installation Notes

    Use a high Octane unleaded fuel (98 Octane is recommended) • We use 3W 2-stroke oil in our engines here in Germany, but there are other high grade 2-stroke oils that will perform well. The list below shows some 2-stroke oils that our customers from abroad have used with success.
  • Page 12 48iB2 / CS - 56i B2 / CS Engine • Use only ignition on/off switches recommended by 3W • 6 volts is required for the ignition. • Do not skimp on your throttle servo. A high quality throttle servo is recommended for reliable and accurate operation of the carburetor.
  • Page 13 • Make sure that no gasoline will be splashed into the hot muffler(s). • Only 3W mufflers, or mufflers authorized by 3W with an acceptance (test) number, should be used. • Only 3W-ignition systems should be used for proper operation.
  • Page 14: Starting Procedure

    It should sound like it is making quick steady power; without any hesitation. 6. An optimally tuned engine will feel a bit rich after a cold start. It will start to run right after it has warmed up for approximately one minute. more infos: www.3w-modellmotoren.de...
  • Page 15: Troubleshooting

    Check to see if the engine is overheating. Check the ignition timing. Check the spark plug for defect. Verify you have the correct gasoline, oil, and have mixed them with the correct ratio. more infos: www.3w-modellmotoren.de...
  • Page 16 48iB2 / CS - 56i B2 / CS Engine Metrics Techn. specifications / Caracteristiques techniques 46i B2 / QS 56i B2 / QS Cylinder capacity 42,5 ccm / 2.55 cu.in 57,00 ccm / 3.48 cu.in Power / Puissance 4,0 HP / CV; 2,92 kW 5,5 HP / CV;...
  • Page 17 48iB2 / CS - 56i B2 / CS Engine mounting bolt pattern ATTENTION: this drawing is in 1:1 size. disable any Acrobat print setting to fit it into paper size. more infos: www.3w-modellmotoren.de...
  • Page 18 Red / black short with plug connection for red LED, long contact - Yellow / white with plug connection for 3W tachometer and other options Info about red LED Ignition battery switched on: LED on Propeller 2 turns (flip):...
  • Page 19 è, valido solo contro presentazione di questo documento. Esta garantla só vale se for apresentada junta à prova de Questa garanzia è valida solo se compra (recibo da loja). presentata assieme alla prova d'acquisto. (Ricevuta del negoziante). more infos: www.3w-modellmotoren.de...

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56i b2 / cs

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