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Thanks for buying SAITO FG-60R3 4-stroke gas-engine
exclusively for model planes.
In order to avoid misuse, please be sure to read well this instruc-
tion manual carefully. If there should be any deficiency, inconve-
nience, etc. Concerning the manufacture, our company will
repair them with responsibility.
Any failure or trouble caused by unnecessary disassembly,
modification, or other uses than those provided in the instruc-
tion manual is not subject to the warranty, however.
Moreover, all responsibilities for the use of the engine, and other
obligations and responsibilities based on laws, regulations, etc.
are borne by the purchaser and the user, and
SAITO SEISAKUSHO CO., LTD. is exempt from any responsibilities.
Specifications
Bore
Weight (Approx.)
Practical speed
Propeller
Fuel
Fuel consumption
Battery for ignition system
Standard accessories
Outside dimensions
Fig.1
NOTE&CAUTION
●Please note that we take no responsibility for any accidents, health damages, etc. using engine / fuel.
●If there s anyone stand in front of the engine, be sure to have them move behind the plane before starting the engine.
●Be sure not to breathe the evaporative emission of fuel and exhaust smoke as possible since they have harmful effects
on human body.
●Once the engine starts, move behind the plane and keep your arm holding the plane away from the prop.
●Make needle adjustment or other control from rear of the engine.
●If the plane cannot be fixed, ask your assistant to hold it for safety.
●During early stage of using engine, take the height in the air high enough to land safely in case the engine stop in the
air suddenly. It will reduce the risk of crash or landing accident.
●Take an extreme care for not bothering or injure others when operating the engine or flying.
●An engine for a model plane is not a toy. Handle it with an extreme care.
●Please note that our guarantee will not cover any breakage or trouble on the engine caused by user s disassembling,
modification, incorrect handling, and so on.
SAITO FG-60R3
4-Stroke Gasoline radial Engine Operating instructions
32.0mm x 3
Body: 1,800g / Mufflers: 90g / Ignition system: 195g
Approx. 1,500-7,000rpm
D21 x P10
D23 x P8
Regular gasoline : Oil=20:1 (Volume ratio)
Approx. 30cc/min (At full throttle 6,500rpm)
*Fuel flow varies depends upon prop load. More fuel flow with larger load and less fuel flow with smaller load.
Voltage: 6-9V higher than 1,000mA is recommended
Limit gauge (0.1t) for tappet adjustment
Plug wrench 
Spark plug [SP-2] (Attached to the engine)
Muffler set (3 Flexible mufflers & Bracket)
207
Stroke
Max on GND
Approx. 6,000-7,000rpm
Static thrust
Approx. 7kgf (Depend on prop)
Applications
1pc
1pc
3pcs
1set
167.5
M10×1
77
51
- 1 -
Disp.
25.0mm x 3
2st Gas-engine 50cc class
Spanner for tappet adjusting lock nut 1pc 
Hexagonal wrench 1.5mm
Ignition system (w/ sensor)
Stand off mount 39.5mm
39.5
Stand-off mount
24.6
44.6
60.32cc
1pc
1set
4pcs
66

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Table of Contents

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   Summary of Contents for Saito FG-60R3

  • Page 1 Moreover, all responsibilities for the use of the engine, and other obligations and responsibilities based on laws, regulations, etc. are borne by the purchaser and the user, and SAITO SEISAKUSHO CO., LTD. is exempt from any responsibilities. Specifications Stroke Disp.
  • Page 2: Fuel, Tank, Piping

    2. Fuel, tank, piping ●Since gasoline is dangerous material, be careful of its storage, use, and transport enough. ●Unleaded high-octane gasoline is not required for SAITO engine. ●The fuel is mixture of commercial regular gasoline and reliable oil for 2-stroke engines.
  • Page 3: Spark Plug

    ●Each switch (for Ignition and for Receiver) should be isolated and set far from each other. ●A gas-engine generates noise which has an adverse effect on RC equipment. Carry out a noise check each time while the engine is running before flight. As a simple method, after starting engine you can check operating it about 50m away from the plane.
  • Page 4: Needle Adjustment

    ●Since a gas-engine has narrow range of air-fuel ratio, adjustment of the needles is severer than a glow-engine. ●The carburetor for the gasoline engine is the assembly of very strict and delicate parts. Make sure to use filtered gasoline. ●Do not disassemble the carb by yourself. If you need to clean up the carb or there's any troubles regarding carb, please consult the shop which you bought the engine from before disassembling.
  • Page 5: Tappet Adjustment

    ●Do the same adjustment for the #3 - #2 cylinders in order. ●For SAITO engines, the tappet gap is enlarged during operation due to thermal expansion of the cylinder (made of aluminum). Therefore set the gap indefinitely close to zero when the engine is cold.
  • Page 6 ●Too much bent causes not only power loss but also break due to heat from exhaust. All specifications and models are subject to change without notice. http://www.saito-mfg.com SAITO SEISAKUSHO, CO., LTD. 22-7, 3-chome, Tokagi, Ichikawa-shi, Chiba prefecture 272-0024, Japan Phone: 047-378-4156 FAX: 047-378-4155 - 6 -...
  • Page 7 SAITO FG-60R3 Parts List Item Item 01 Cylinder Valve set (In & Ex) 3set 06 Piston 46-1,-2 07 Piston pin Valve spring & Keeper & Retainer 6ea. 08 Piston pin retainer 47-1,-2,48 09 Piston ring 48 Valve retainer (Cotter) 10 Master rod...

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