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Saito FG-57T Instruction Manual

Twin-cylinder gasoline four-stroke engine.
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Twin-Cylinder Gasoline Four-Stroke Engine


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   Summary of Contents for Saito FG-57T

  • Page 1 Twin-Cylinder Gasoline Four-Stroke Engine INSTRUCTION MANUAL FG-57T...
  • Page 2 NOTICE All instructions, warranties and other collateral documents are subject to change at the sole discretion of Horizon Hobby, Inc. For up-to-date product literature, visit and click on the support tab for this product. Meaning of Special Language: The following terms are used throughout the product literature to indicate various levels of potential harm when operating this product: NOTICE: Procedures, which if not properly followed, create a possibility of physical property damage AND little or no possibility of injury.
  • Page 3: Safety Warnings

    This instruction manual has been precautions when operating, handling developed to ensure optimum or performing any procedure involving performance from the Saito gasoline your engine. Failure to follow safety engine you have purchased. Saito precautions could result in serious gasoline engines are adapted from injury and property damage.
  • Page 4 S A F E T Y I N S T R U C T I O N S Precautionary Guidelines anything that can ignite. • Always ensure the aircraft is secure • Always mount the engine securely on and will not move once the engine is a bench mount or high-quality engine started.
  • Page 5: Engine Parts Identification

    Engine Parts cooperation with Walbro for exclusive Identification use in the Saito gasoline engine it is It is important to be able to identify the mounted to. This carburetor has a parts of your Saito engine. In the...
  • Page 6: Support Equipment

    Because commercial gasoline has many impurities be sure to use a The following items, which are not reliable filter when refueling the included with your Saito engine, are onboard tank of the aircraft. necessary in order to operate the model engine:...
  • Page 7: Engine Mounting

    ™ as far as possible before tightening will work perfectly on all of the twin- the locking nut to the cylinder head. cylinder gasoline Saito engines. This ensures adequate strength in the Engine Mounting threaded joint between the cylinder and the muffler/exhaust pipe.
  • Page 8 P R E P A R I N G Y O U R E N G I N E Preparing your engine 2. Use the proper spark plugs. Your engine includes the NGK CM-6 spark plugs (SAIG36120). The first run on any engine, whether 2-cycle or 4-cycle, is critical to the 3.
  • Page 9: Starting The Engine

    5. Now quickly flip the propeller 10 times in a clockwise direction and How to choke your Saito your choking process is complete. Gasoline engine equipped This gets fuel into the cylinders of your engine.
  • Page 10 E N G I N E B R E A K - I N Break-in 4. Engage the electric starter for about 5 seconds and the engine should start. Break-in is a very important start to Manually starting the engine a long and enjoyable engine life so please do these steps with patience and CAUTION: Use a starting stick...
  • Page 11: Carburetor Adjustments

    C A R B U R E T O R A D J U S T M E N T S peak setting followed by richening main (high-speed) needle ½ turn open to cool. Do this about 10 times from the target position. In principal throughout the course of this tank the carburetor should be adjusted by of fuel.
  • Page 12: Normal Engine Operation

    N O R M A L E N G I N E O P E R A T I O N Normal Engine bogs down during the transition, then the idle is too rich and needs Operation to be adjusted leaner. If during the transition the rpm increases quickly, 1.
  • Page 13: Engine Maintenance

    Once you see the intake valve open and If it becomes necessary to dismantle close, rotate the propeller another your Saito engine, the following 180 degrees and you should be at procedure should be followed: the compression top dead center.
  • Page 14: Spark Plug Gap

    Tips For Extended Engine Life To add longer life to your Saito ™ engine the following recommendations are made: 1. Use a fuel 20:1 gasoline to oil ratio.
  • Page 15: Troubleshooting

    T R O U B L E S H O O T I N G Troubleshooting Generally speaking, there are very few things that will keep today’s modern gas engines from starting. To that end, make sure you’re using good quality “fresh”...
  • Page 16 P A R T S L I S T Twin Cylinder Gas Cross-Reference Chart TWIN CYLINDER GAS CROSS REFERENCE CHART ITEM FG-57T ITEM FG-57T 01 Cylinder, Left G57T01 73 Muffler, Left G57T73 02 Cylinder, Right G57T02 80 Muffler nut 22OA8O...
  • Page 17: Propeller Selection

    This chart will enable each propeller prior to installation you to select the best propeller for onto your Saito engine. initial setup of your Saito engine. Failure to do so may cause unwanted vibration in your aircraft. SaitoTwin-Cylinder Gas Propeller Chart...
  • Page 18 P A R T S L I S T...

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