Saito FG-17 Owner's Operating Instruction Manual
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Saito FG-17 Owner's Operating Instruction Manual

4-stroke gasoline engines
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Saito
4-Stroke Gasoline Engines
Owner's Operating Instruction Manual
Model FG-17 & FG-21 Version 2012

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Summary of Contents for Saito FG-17

  • Page 1 ™ Saito 4-Stroke Gasoline Engines Owner’s Operating Instruction Manual Model FG-17 & FG-21 Version 2012...

  • Page 2: Safety Warnings

    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 www.horizonhobby.com 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 a small or null possibility of injury.

  • Page 3: Precautionary Guidelines

    • A lways stand behind the propeller when making • A lways ensure gasoline and fuel are stored in a carburetor adjustments. clearly marked container well away from the reach of children. • A lways wear safety glasses or goggles when start- ing and running your engine.

  • Page 4: Table Of Contents

    Always use extreme caution when testing, running or flying an engine and/or a model aircraft with engine installed. Always use genuine Saito parts for replacements. iMPoRtANt: For proper heat transfer, it is important to use a metal motor mount when mounting these engines in a model aircraft.

  • Page 5: Introduction To The Saito Gasoline 4-Stroke Engines

    Saito Gasoline 4-Stroke engines Saito four stroke gasoline engines were developed to satisfy a market need for a more cost effective and cleaner answer to glow powered engines. Ever at the forefront of technology, Saito has led the way many times in developing engines with large displacements in small case sizes.
  • Page 6 15 x 6 16 x 6–16 x 8 to the engine and airframe. 16 x 6 17 x 6 For break-in, Saito recommends the use of a 3 Blade 15 x 7–15 x 9 smaller propeller for initial break-in and Engine 8,500–...

  • Page 7: Ignition System

    • I nstall the engine and propeller in an aircraft that performs at 8,100 RPM. ignition System Saito gasoline four-stroke engines come with Saito’s system in a location near the engine and away from own ignition system composed of the ignition unit, the receiver to prevent any unwanted interference.

  • Page 8: Spark Plug

    The carburetors used on gasoline four-stroke engines are exclusive to Saito. Since they have a negative pres- sure type fuel pump, the engine can be mounted in any position. Notice: If fuel remains in the carburetor after flight, the components made from rubber, such as the diaphragm, will deteriorate over time.

  • Page 9: Starting The Engine

    Starting the engine The carburetor on the Saito engine comes with the low-speed needle adjusted to a basic setting. You will need to adjust the high-speed needle. The standard carburetor settings are as follows: The high-speed needle valve is set open counterclock- wise from the fully closed position.
  • Page 10 • I f the engine still will not start, remove the spark Note: Saito 4-stroke gasoline engines come with a plug and check the contacts. Clean any excess fuel pumped carburetor. You do not have to choke the from the spark plug and install the spark plug in engine as you normally would a 2-stroke engine.

  • Page 11: Fg-17 Dimensions And Specifications

    FG-17 Dimensions and Specifications Manufacturing Code FG-17 Outside Dimensions (mm) [Engine bed top] 4– 4.2 23.5 M12x1.0 M8x1.25 E.C. 30.5 71.5 42.6 68.5 56.5 4– 4.2 127.5 E.C. Specifications Disp 17.2cc (1.05 cu in) Bore 29.0mm (1.14 in) Stroke 26mm (1.02 in) Weight (Engine only) 21.5 oz (610 g)

  • Page 12: Dimensions And Specifications

    FG-21 Dimensions and Specifications 64.5 25 13.7 FG-21 Outside Dimensions (mm) Manufacturing Code [Engine bed top] 4–4.2 26.8 25.4 M8 x 1.25 26.2 35.8 64.5 74.5 43.2 Specifications Disp 20.91cc (1.25 cu in) Bore 32.0mm (1.26 in) Stroke 26mm (1.02 in) Weight (Engine only) 24.1 oz (685g) Weight (Muffler only) 2.9 oz (83 g) Weight (Ignition only) 4.0 oz (113 g)

  • Page 13: Fg-17/Fg-21 Exploded View

    FG-17/FG-21 exploded View...
  • Page 14 Description FG-17 FG-21 Cylinder, Left G1701 G2101 Piston 10006 G2106 Piston Pin 10007 120S07 Piston Pin Retainer (6 pc.) 6508 120S08 Piston Ring 10009 G2109 Connecting Rod G1710 G2110 Cylinder Screw Set 6514 6514 Crankcase G1715 G2115 Rear Cover (A)
  • Page 15 DEScription FG-17 FG-21 Valve-In/Out (pr) 10046 125A46 Valve Spring, Keeper, Retainer (2 set) 6547 6547 Valve Retainer (4 pc.) 5048 5048 Rocker Arm Cover (pr) 5049 5049 Intake Manifold, Left G1769 G2069 Muffler, Right G14B74 G2074 Muffler Manifold, Standard 91S75 125A75 Muffler Nut (2 pc.)

  • Page 16: 3-Year Limited Warranty

    3-Year Limited Warranty  COMMERCIAL LOSS IN ANY WAY, REGARDLESS OF WHETHER SUCH CLAIM IS BASED IN CONTRACT, What this Warranty covers WARRANTY, TORT, NEGLIGENCE, STRICT LIABILITY Horizon Hobby, Inc., (Horizon) warrants to the OR ANY OTHER THEORY OF LIABILITY, EVEN IF original purchaser that the product purchased (the HORIZON HAS BEEN ADVISED OF THE POSSIBILITY “Product”) will be free from defects in materials and...
  • Page 17 Service Center.  consideration. Be sure your name, address, and Notice: the sale, warranty and service of Saito RMA number are clearly written on the outside of products distributed by Horizon is limited to the geographic regions of North America, central the shipping carton.

  • Page 18: Warranty And Service Contact Information/Parts Contact Information

    Warranty and Repair Policy Saito engines are guaranteed against workmanship and manufacturing defects for a period of 3 years from the original date of purchase. This warranty is limited to the original purchaser of the engine and is not transferable.
  • Page 20 © 2012 Horizon Hobby, Inc. Distributed exclusively by Horizon Hobby, Inc. Saito is a trademark of Saito Seisakusho Co. Ltd, Japan. www.horizonhobby.com Created 02/2012 32925...

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Fg-21

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