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Summary of Contents for 3W 212i B4/QS
- Page 1 ENGINE MANUAL 212i B4 / QS www.3w-modellmotoren.com...
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Page 2: Dear Customer
212i B4 / QS Engine Manual 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. Our in-house engineer has been designing two and four stroke engines for gasoline and diesel for 38 years. - Page 3 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: •...
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Page 4: 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.com... -
Page 5: Engine Cooling
The idea is to get all of the cool air that is coming through the air intake opening(s) to hit the middle of the cylinder(s) directly, and then be forced over the cylinder(s), creating turbulent air moving more infos: www.3w-modellmotoren.com... -
Page 6: 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.com... - Page 7 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.
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Page 8: Carburetor Settings
1 1/4 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.com... -
Page 9: 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.com... -
Page 10: Additional Installation Notes
Use the oil manufacturer's recommended gas to oil mixture • 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 11 212i B4 / QS Engine Manual • 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.
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Page 12: Starting Procedure
• 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 13 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.com...
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Page 14: 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.com... - Page 15 IIS - Ignition / V.cc allumage 6,0 V Propeller / Hélice 34 x 10; 35 x 10; 35 x 12; 36 x 10 2-bladed / à 2 pales 27 x 14; 30 x 12; 32 x 12 3-bladed / à 3 pales more infos: www.3w-modellmotoren.com...
- Page 16 / black with plug connection for red LED, long contact + yellow / white with socket connection for 3W tachometer and other options Info about red LED a) Ignition battery switched on: LED on b) Propeller one turn (flip):...
- Page 17 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.com...
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