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.
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.
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 .
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...
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.
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...
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.
• 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.
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.
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...
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.
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.
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.
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).
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.
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.
• 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.
(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...
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)
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...
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...
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...
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...
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...
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...
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)
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.
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.
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...