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Saito FG-14C 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-14C, FG-17 & FG-21
Version 2012
Model FG-30B, FG-36B & FG-40

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Table of Contents

   Related Manuals for Saito FG-14C

   Summary of Contents for Saito FG-14C

  • Page 1 ™ Saito 4-Stroke Gasoline Engines Owner’s Operating Instruction Manual Model FG-14C, FG-17 & FG-21 Version 2012 Model FG-30B, FG-36B & FG-40...
  • Page 2: Safety Warnings And Precautions

    The engine is designed for use on a model radio control airplane. If it is used for any other purpose, we cannot be responsible for its reliability or safety. • Always use genuine Saito parts for replacements. • Be sure to check the propeller before each flight. If it is damaged, replace the propeller with a new one.
  • Page 3 Model engines produce a substantial amount of power and can create unsafe situations if not used correctly. Always use common sense and observe all safety precautions when operating, handling or performing any procedure involving your engine. Failure to follow safety precautions could result in serious injury and property damage.
  • Page 4: Table Of Contents

    Valve/Tappet Gap Adjustment ............20 FG-14C/FG-17/FG-21 Dimensions, Specifications, Parts List and Exploded View ..... . . 21 FG-30B/FG-36B/F-40 Dimensions, Specifications, Parts List and Exploded View .
  • Page 5: Components

    Wrench FG-14C/FG-17/FG-21 Engine Instructions Engine Mounting and Muffler Attachment Mount the FG-14C, FG-17 or FG-21 engine on aircraft- grade plywood with more than 6mm thickness or to a mount of equivalent strength, then firmly fix with 4 bolts. We highly recommend the use of the included...
  • Page 6: Propeller

    3 blade 15 x 7–9 The engine produces the maximum output when the engine is running at about 8,500–9,200 ground rpm for the FG-14C and 8,300–9,000 ground rpm for the FG-17/FG-21. Propeller and Fuel Consumption In order to decrease fuel consumption and prolong the life of the engine, choose a propeller that maximizes rpm when the throttle is fully open, and an airframe that performs flights at about 90% of the propeller output.
  • Page 7: Fuel

    Fuel • Mix a ratio of gasoline to oil of 20:1 for break-in and • Remember to use caution in the storage, use and continuous operation on all engines. transport of gasoline. • A mixture of high-quality 91 octane unleaded • Since commercial gasoline has many impurities, gasoline and a reliable, high-quality 100% synthetic please be sure to use a reliable fuel filter (SAI50109...
  • Page 8: Spark Plug

    Battery Voltage [6–8.4V] Battery Capacity: more than 1,000mA Spark Plug The FG-14C, FG-17 and FG-21 come with the Saito 1/4-32 1/4-32 spark plug (SAIG20120). When needed, Spark gap = .4 to .5mm (.016 to .020 in) replace with identical plugs.
  • Page 9: Preparation Before Starting The Engine (prior To Break-in)

    • Be sure to use a safety on/off switch from the battery • For break-in, use a fuel/oil mix ratio of 20:1. to the ignition. • FG-14C: Mount a 14 x 6 plastic or wood propeller. WARNING: Always keep all spectators, Be sure it has been balanced. Check the tightness especially children, are at least 30 feet away after every flight.
  • Page 10: Starting The Engine (assuming The Engine Is Mounted In An Aircraft)

    Figure 5—FG-14C/FG-17/FG-21 Carburetor On the FG-14C, FG-17 and FG-21 the low-speed needle should be set at 7-5/8 from closed. 1. Disconnect the throttle arm from the throttle pushrod. 2. Manually hold the throttle barrel closed.
  • Page 11: Break-in

    Engine Maintenance and Valve/Tappet Adjustment Sections. • Saito engines are equipped with a “breather” nipple. It is recommended that a length of PFM type tubing (EVOA102) tubing be attached to this crankcase breather nipple and routed away from the engine compartment...
  • Page 12: Normal Operation, Maintenance And Additional Information

    7 5/8 from closed. A general starting point for the high-speed needle on the FG-14C carb is 1 turn 20 min. and the FG-17/FG- 1. Disconnect the throttle arm from the throttle pushrod. 21 carb is 1 turn 30 min.
  • Page 13: Fg-30b/fg-36b/fg-40 Engine Instructions

    10mm of thickness or to a mount of equivalent strength, then firmly fix with 4 bolts. We highly recommend the use of the Saito Motor Mount for the FG-30B (SAIG3095) or FG-36B/40 (SAIG3695) to mount this engine to a model aircraft.
  • Page 14: Propeller

    18 x 6 19 x 8–10 19 x 8–10 For break-in, Saito recommends the use of a smaller propeller for the initial break-in and approximately 20 20 x 8 20 x 8 subsequent flights.
  • Page 15: Fuel

    Fuel • Mix a ratio of gasoline to oil of 20:1 for break-in and • Since commercial gasoline has many impurities, please be sure to use a reliable fuel filter (SAI50109 continuous operation on all engines. • A mixture of high-quality 91 octane unleaded or HAN143) in your fuel system.
  • Page 16: Carburetor

    The Saito ignition has an operating voltage from and cord (black and red) for connection to a battery (not 4.8–9.0 volts. Saito recommends the use of a 5-cell included). You will also need to secure an on/off switch Ni-Cd/Ni-MH battery or a 2-cell Li-Po/Li-Ion/Li-Fe with (safety switch system).
  • Page 17: Preparation Before Starting The Engine (prior To Break-in)

    Starting the Engine (assuming the engine is mounted in an aircraft) The carburetor on the Saito engine comes adjusted The ignition unit itself should be wrapped in foam to a basic setting. This setting should be maintained rubber to prevent engine vibration from damaging during the initial break-in runs.
  • Page 18: Choking The Engine

    Choking the Engine The proper way to choke the carbuerator that comes check the operation of the throttle servo and other with your FG-30B/36B/40 engine is: controls. • Turn on the power to the ignition system. 1. Make sure the ignition is off. • Using an electric starter, begin cranking the engine.
  • Page 19: Final Adjustment Of The Carburetor

    • Check the fuel lines. • Check for proper mechanical function by turning the Engine Maintenance engine over. Do not needlessly disassemble your Saito single- • Check that the carburetor is correctly installed. cylinder engine. If you must disassemble your engine, Mechanical Faults please refer to the following steps.
  • Page 20: Carburetor Maintenance

    (TDC) position. Refer to figure below: • Assemble the engine, reversing the crisscross pattern used in the disassembly. Prior to tightening each of the screws, apply a drop of oil to prevent thread damage. • Normal engine maintenance, such as adjusting the Cam (Intake or Exhaust) valves or carburetor, is permissible without voiding Bench Mark...
  • Page 21: Fg-14c/fg-17/fg-21 Dimensions, Specifications, Parts List And Exploded View

    FG-14C Dimensions and Specifications FG-14C Outside Dimensions (mm) SPECIFICATIONS Displacement 13.8cc (.82 cu in) Bore 29.0mm (1.14 in) Stroke 20.4mm (.80 in) Weight (Engine only) 18.6 oz (528 g) Weight (Muffler only 2.1 oz (58 g) Weight (Ignition only 3.7 oz (105 g) Total Weight (all inlcusive) 24.4 oz (691 g)
  • Page 22 FG-17 Dimensions and Specifications FG-17 Outside Dimensions (mm) 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) Weight (Muffler only) 2.1 oz (60 g) Weight (Ignition only) 3.7 oz (105 g) Total weight (all inclusive) 27.2 oz (770 g) Crankshaft M8x1.25 Cylinder AAC...
  • Page 23 FG-21 Dimensions and Specifications FG-21 Outside Dimensions (mm) SPECIFICATIONS Disp 20.52cc (1.25 cu in) Bore 31.7mm (1.24 in) Stroke 26mm (1.02 in) Weight (Engine only) 21.9 oz (620 g) Weight (Muffler only) 2.9 oz (80 g) Weight (Ignition only) 3.7 oz (105 g) Total weight (all inclusive) 28.5 oz (805 g) Crankshaft M8x1.25 Cylinder AAC...
  • Page 24 Saito FG-14C/FG-17/FG-21 Parts List DESCRIPTION DESCRIPTION Cylinder (left) Rocker Arm Screw and Nut (42-1,42-2) Piston Rocker Arm Pin Piston Pin Rocker Arm Bracket (Left) Piston Pin Retainar Rocker Arm Bracket (Right) Piston Ring Valve (In and Out) (46-1, 46-2) Connecting Rod...
  • Page 25: Fg-30b/fg-36b/f-40 Dimensions, Specifications, Parts List And Exploded View

    Saito FG-14C/FG-17/FG-21 Exploded View...
  • Page 26 FG-30B Dimensions and Specifications FG-30B Outside Dimensions (mm) SPECIFICATIONS Disp 29.1cc (1.80 cu in) Bore 36.0mm (1.41 in) Stroke 28.6mm (1.12 in) Weight (Engine only 37.2 oz (1055 g) Weight (Muffler only) 3.0 oz (85 g) Weight (Engine Mount only) 6.7 oz (190 g) Weight (Ignition only) 3.7 oz (105 g) Total weight (all inclusive) 50.6 oz (1435 g) Crankshaft M8x1.25...
  • Page 27 FG-36B Dimensions and Specifications FG-36B Outside Dimensions (mm) SPECIFICATIONS Disp 36.3cc (2.20 cu in) Bore 38mm (1.49 in) Stroke 32mm (1.26 in) Weight (Engine only) 44.2 oz (1253 g) Weight (Muffler only) 3.0 oz (85 g) Weight (Engine Mount only) 9.6 oz (270 g) Weight (Ignition only) 3.7 oz (105 g) Total weight (all inclusive) 60.5 oz (1713 g) Crankshaft M8x1.25...
  • Page 28 FG-40 Dimensions and Specifications FG-40 Outside Dimensions (mm) SPECIFICATIONS Disp 40.2cc (2.40 cu in) Bore 40mm (1.57 in) Stroke 32mm (1.26 in) Weight (Engine only) 44.2 oz (1253 g) Weight (Muffler only) 3.0 oz (85 g) Weight (Engine Mount only) 9.6 oz (270 g) Weight (Ignition only) 3.7 oz (105 g) Total weight (all inclusive) 60.5 oz (1713 g) Crankshaft M8x1.25...
  • Page 29 Saito FG-30B/FG-36B/FG-40 Parts List DESCRIPTION DESCRIPTION Cylinder (left) Rocker Arm Piston Rocker Arm Screw and Nut (42-1,42-2) Rocker Arm Pin Piston Pin Rocker Arm Bracket (Left) Piston Pin Retainer Rocker Arm Bracket (Right) Piston Ring Valve (In and Out) (46-1, 46-2)
  • Page 30 Saito FG-30B/FG-36B/FG-40 Exploded View...
  • Page 31 DESCRIPTION FG-14C FG-17 FG-21 FG-30B FG-36B FG-40 Cylinder, Left G14B01 G1701 G2001 G3001 G3601 G4001 Piston 10006 10006 125A06 18006 220A06 G4006 Piston Pin 1007 10007 120S07 18007 220A07 G4007 Piston Pin Retainer (6) 6508 6508 120S08 300T08 300T08 G4008...
  • Page 32 DESCRIPTION FG-14C FG-17 FG-21 FG-30B FG-36B FG-40 Valve-In/Out (2) 91S46 10046 125A46 120S46 G3646 G3646 Valve Spring, Keeper, 6547 6547 6547 120S47 120S47 120S47 Retainer (2) Valve Retainer (4) 5048 5048 5048 120S48 120S48 120S48 Rocker Arm Cover (2) 5049...
  • Page 33: Warranty Information

    3-YEAR LIMITED WARRANTY the use of the Product, purchaser is advised to return the What this Warranty Covers - Horizon Hobby, Inc., (Horizon) Product immediately in new and unused condition to the place warrants to the original purchaser that the product purchased of purchase.
  • Page 34 Consumer 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 35 Consumer Warranty Registration Complete this form and mail along with your dated sales receipt (send copy, keep original for your files) within 10 days of purchase to: Horizon Service Center Attn: Saito Warranty Dept. 4105 Fieldstone Road Champaign, IL 61822 Engine Type Date of Purchase Owner’s Name...
  • Page 36 © 2013 Horizon Hobby, Inc. www.horizonhobby.com Saito is a trademark of Saito Seisakusho Co. Ltd, Japan. Team Orion is a registered trademark of Team Orion Europe S.A. Corporation. All other trademarks, service marks and logos are property of their respective owners.

This manual is also suitable for:

Fg-17Fg-21Fg-30bFg-36bFg-40

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