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SAITO FA-72B/72BGK

4-Stroke Single Engine Operating instructions

We would like to express our sincere thanks for 

your purchase of the SAITO FA-72B/72BGK 

engine, which is manufactured by SAITO 

SEISAKUSHO CO., LTD. Please read our instruc-

tions carefully and treat your engine with care. 

Should there be a manufacturing defect, SAITO 

SEISAKUSHO CO., LTD. will make necessary 

repairs at free of charge. You will notice a letter 

(A,A,C etc.) stamped on the top of the right mount-

ing lug. This identifies the production version of 

your engine. If you ever need to order a part or 

have a question about your engine, specify this 

letter along with the part number you need so we 

can better handle your request. 

Unique features of SAITO FA-72B/72BGK engines include:

Cylinder  

 

-By the monolithic structure of cylinder head and cylinder with direct hard 

chrome plated inner surface without using cylinder liner, this engine empha-

sizes durability while it also offers lightweight and distortion-free structure 

with improved cooling efficiency.

●Piston  

 

-High silicon content aluminum is used in the piston construction. It also has 

a compression ring that increases the engine’s efficiency.

Crankshaft   

-Made of solid chrome molybdenum steel, and supported by two ball bearings.

●Combustion chamber -Increased combustion efficiency with improved hemispherical shape.

●Exhaust sound 

-Real-plane-like exciting exhaust sound.

●Weight 

 

-Lightest level in the class.

●Mounting dimensions -As mounting dimensions is the same with those of FA-50,56.

This engine is designed and manufactured based on high efficiency and durability of the first AAC 

method in the world.  AAC: Aluminum Piston, Aluminum Cylinder, Hardchrome Plated.

SAITO FA-72B/72BGK engines have been designed placting emphasis on the lightweight and 

compact.

Specifications

Bore

Ø

27.0mm

Body: 

470g  (Approx. 520g w/muffer)

 

Stroke

 

20.6

mm

11.79cc

Disp.

Weight
Practical speed

Approx. 

2,000-12,000rpm

12”x8” - 14”x6”

Max on Gnd

 

Approx. 9,000-11,000rpm

4-stroke 70 or 2-stroke 40~60 class

Propeller

Applications

Fuel

Fuel consumption

Standard 

accessories

Spanner for tappet adjusting lock nut

 

  

1pc

Limit gauge (0.1t) for tappet adjustment 

1pc

Hexagonal wrench set 

 

 

1set

Main needle valve extension bar 

1 each

Muffler set 

 

 

1set

SAIGP-01 Glow plug (Attached to the engine)  1pc

Synthetic oil with 10~20% nitro methane content

Approx. 

20

cc/min (At full throttle 

10,200rpm)   *Fuel flow varies depends upon prop load. More fuel flow 

with larger load and less fuel flow with smaller load.

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