User Manual
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Thanks for buying SAITO FG-33R3 4-stroke gas-engine
exclusively for model airplanes.
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, modifi-
cation, or other uses than those provided in the instruction
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.
27.0mm x 3 19.2mm x 3 32.98cc
D16 x P8 D18 x P6
SAITO FG-33R3
4-Stroke Gasoline radial Engine Operating instructions
SAITO FG-33R3 is the gas-version of existing glow FA-200R3. This new designed gas-engine is a figure of integration of many
experiences on our radial engines and gas-engines. Additional designs concentrate on durability and high power brought it
powerful and beautiful radial sound.
Notification about treatment of 4-stroke model gas-engine
◎Since valve timing is designed to get high power and high speed, the overlap range is relatively wide. So sometimes fuel get flown
back from the carburetor. (It may spatter in the engine room.）
◎Since the oil for lubrication is mixed in the fuel, waste oil from the breather nipple is dirty. Depending on treatment of waste oil, it
can be spattered on the plane.
◎
Since lubrication is through breather, sometimes the oil oozes from each joint or commissure however its no problem on performance.
◎Depending on the quality of the oil, sometimes there can be rust inside the crankcase. But its no problem on performance as long
as there are no abnormal noise or backlash.
◎During operation, the screws all over the engine can be loosen by heat expansion of metal. So please tighten up them occasionally.
Specifications
Bore
Body: 1,440g / Mufflers: 90g / Ignition system: 200g
Stroke Disp.
Weight
Practical speed
Approx. 1,700-9,500rpm
Max on GND
Approx. 8,000-9,000rpm
2st Gas-engine 2030cc class
Propeller Static thrust
Approx. 44.5kgf (Depend on prop）
ApplicationsFuel
Fuel consumption
Battery for ignition system
Standard accessories
Regular gasoline：Oil＝20:1 (Volume ratio)
Approx. 25cc/min (At full throttle 9,000rpm)
*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 1pc
Plug wrench 1pc
Spark plug [SAITO SP-1] （Attached to engine） 3pcs
Muffler set (3 Flexible mufflers & Bracket) 1set
Spanner for tappet adjusting lock nut 1pc
Hexagonal wrench 1.5mm 1pc
Ignition system（w/ sensor） 1set
Fig.1
Outside dimensions