Saito FA-200R3 User Manual

Instructions for SAITO FA-200R3 (AAC) 4-Stroke Engine

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We would like to express our sincere thanks for your purchase of the SAITO FA-200R3
engine. Please read our instructions carefully and treat your engine with care. If there’re
any manufacturing defects, SAITO Seisakusho co., ltd. will make necessary repairs free
of charge. You are requested to strictly avoid disassembling the engine since assembled
with the use of special tools and jigs to assure perfect construction.
In the case of breakage or trouble, if encountered due to crash or others, please send the
engine to our service station.
Please notice that our guarantee will not cover any breakage or trouble on the engine
caused by your disassembling or modification.

Ver. Feb, 2019

Principal outside dimension

Explosion order

Mechanism of 4-Stroke Engin

(1-3-2)

The 4-Stroke engine provides 4 individual pisto
movements as illustrated below. The “Stroke” means th

M8x1.25

Prop rotational directio

1

75

E.C.

E.C.

64

Bore 27.0mm×3 Weight Approx. 1,385g (with mufflers) Propeller Standard APC16"×8"-10",17"×6"

Stroke 19.2mm×3 Practical Speed 1,800-9,500rpm max range on the ground: 8,500-9,500rpm

Stroke volume 32.98cc Static thrust Approx. 6-7kgf

Fuel flow

46cc/min (At full throttle, Fuel of synthetic oil with 15% of nitro content, at approx 9,000rpm)
*Fuel flow varies depends upon prop load. More fuel flow with larger load and less fuel flow with smaller load.

4-ø4.5

25

50

75

M10x1

155ø198

23

Cylinder numbers viewe
from the rea

iston movement from the Top Dead Center to the Botto
Dead Center. In the 4-Stroke engine, one cycle of operatio
in change of gas state inside the cylinder and valv
movement are completed at every 4 strokes of piston that i
every 2 revolutions of the crankshaft. Formally the engine i
called the 4-stroke one-cycle engine.

Unique features of SAITO FA-200R3

Optimum for small-size scaled airplane
Low vibration (assured by constant-interval explosion)
Real sound of the exhaust.
The engine is designed to equalize fuel mixture and minimize misfire due to insufficient distributing at idling by means of special port type intake manifold

originally developed by SAITO.

Cylinder head: Improved semi-spherical combustion chamber assures better combustion efficiency and volumetric efficiency.
Cylinder: The aluminum cylinder is directly hard-chrome plated on its inner surface without installing liners to reduce weight and increase durability. The monolithic

structure of cylinder head and cylinder prevents distortion and improves cooling efficiency.

Piston: The piston is made of high silicon content aluminum and attached with a compression ring to heighten engine performance.･
Crankshaft: Has a forged solid construction made of chrome molybdenum steel, and supported by two ball bearings.
Cam: Features high cam providing longer maximum lift time.
Carburetor: High-performan
Propeller nut: designed to have double nuts preventing loosening and fall-off for the safety.

Standard Accessories

1. Wrench for tappet adjusting screw 1 pc. 5. Glow plug [SAI-GP01] 3 pcs.

2. Limit gauge (0.1t) for tappet adjusting 1 pc. (Attached to the engine)

3. Hexagonal wrench (1.5mm) 1 pc. 6. Plug heating connector set 1 set

4. Muffler complete 1 set (3pcs. of red cord, 1pc. of black, 2pcs. of fixture)

ce of slow throttling type.

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