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4. Engage the electric starter for about 

5 seconds and the engine should 
start.

Manually starting the engine 

CAUTION:  Use a starting stick 

or leather workman’s gloves to protect 

your hands.

1. Turn on the transmitter, and then 

turn on the receiver switches. 

Position the throttle stick to the fully 

closed position.

2. Check that the ignition system is 

turned off.

3. Insert the choke bar through the carb 

and engage in the rotating barrel of 

the carb.

4. Pull the choke bar out and hold in 

position.

5. Next to pull fuel into the carb, grasp 

and rotate the propeller through 

a number of times. This choking 

operation works better if the 

propeller is not quickly flipped but 

pulled through the operation. Once 

you hear that fuel is flowing to the 

carburetor, rotate through another 5 

times.

6.  Now quickly flip the propeller 10

  times in a clockwise direction and 

your choking process is complete. 

This gets fuel into the cylinders of 

your engine.

7. Release and remove the choke bar.

8. Turn on the ignition.

9. Quickly flip the engine through.  

The engine should start easily. If 

it does not start, repeat the above 

choking procedure.

Break-in

Break-in is a very important start to 

a long and enjoyable engine life so 

please do these steps with patience and 

care.

The main purpose of the break-in 

period is to provide plenty of lubricant 

to each and every moving part in 

the engine.  Rough engine operation 

during break-in because of a rich fuel 

mixture is ok and required to ensure 

that adequate lubrication is being 

provided to the newly mated parts.

1. Start the engine as described and 

allow it to operate at low rpm for 

3–5 seconds.

2. While running at slow rpm, open 

the main (high-speed) needle ½ 

turn and open the throttle ½ way. If 

a rich mixture is not evident at this 

point, open the low-speed needle to 

achieve a rich mixture.  While no 

particular rpm target is given, this 

should all be accomplished at or 

below 5000 rpm.  The object is to 

run this way for two full tanks. This 

provides sufficient lubrication to all 

the mating surfaces to allow them to 

begin to work together.

3. Reset the low-speed needle to the 

factory specification and run one 

full tank of fuel with the rich high-

speed needle setting and ½ throttle.

4. With a fresh tank of fuel restart 

the engine, this time leaning the 

high-speed needle to achieve a 

E N G I N E   B R E A K - I N

Summary of Contents for FG-57T

Page 1: ...INSTRUCTION MANUAL Twin Cylinder Gasoline Four Stroke Engine FG 57T...

Page 2: ...low all the instructions and warnings in the manual prior to assembly setup or use in order to operate correctly and avoid damage or serious injury NOTICE All instructions warranties and other collate...

Page 3: ...is required Safety Warnings WARNING Model engines produce a substantial amount of power which can create unsafe situations if not used correctly Always use common sense and observe all safety precaut...

Page 4: ...ays ensure gasoline and fuel are stored in a clearly marked container well away from the reach of children Precautionary Guidelines Always mount the engine securely on a bench mount or high quality en...

Page 5: ...capacity 2S Li Po batteries are the recommended power source because of their light weight and durability The ignition amp draw is approximately 790mAh at full throttle Carburetor The gas twin engine...

Page 6: ...at less than full throttle 3 Fuel Filter and Fuel Pump Because commercial gasoline has many impurities be sure to use a reliable filter when refueling the onboard tank of the aircraft CAUTION If a qua...

Page 7: ...nt cooling will cause the engine to run poorly and cause mechanical failures Without cooling air over the exhaust pipes it is very likely they will become loose at the cylinder head Always ensure that...

Page 8: ...or break in the following procedures are applicable 1 Use a break in fuel as described in the Support Equipment 20 1 gasoline oil ratio 2 Use the proper spark plugs Your engine includes the NGK CM 6 s...

Page 9: ...it is not fully closed it will be difficult to draw fuel into the carburetor for choking 3 Pull the choke bar and fix it in place with a clamping tool of some sort against the side of your cowling so...

Page 10: ...does not start repeat the above choking procedure Break in Break in is a very important start to a long and enjoyable engine life so please do these steps with patience and care The main purpose of t...

Page 11: ...le valve and then adjusting the low speed needle valve Until the high speed needle setting is fixed low speed adjustment will be difficult and not stable 1 Fill the fuel tank and then start the engine...

Page 12: ...ment of the carburetor needs to be made after actually flying the airplane in the conditions and manner that you enjoy Normal Engine Operation 1 Ensure the ignition battery is adequately charged befor...

Page 13: ...reak in on the ground is completed you should adjust the tappet valve gap for the first time After the initial adjustment inspect the tappets at least after every 10 hours of operation and check for t...

Page 14: ...hould be made If you cannot slide the feeler gauge between the two then your adjustment is fine and nothing further needs to be done Tips For Extended Engine Life To add longer life to your Saito engi...

Page 15: ...nnect ignition battery excessive priming remove the spark plugs and rotate the propeller several times to clear the cylinder Engine fires but Over primed Disconnect ignition battery and does not run r...

Page 16: ...Vlv Retainer 49 Rocker Arm Cover 69 Intake manifold lft 70 Intake manifold rt G57T01 G57T02 G57T06 18007 300T08 18009 300T10C 300T13 G57T14 G57T15 G3619 300T20A 300T21 300T22 G57T23 G57T27 450R3D28 30...

Page 17: ...ircraft SaitoTwin Cylinder Gas Propeller Chart ENGINE SPORT SCALE FG 57T 1 500 7 000 rpm 21 x 10 22 x 8 22 x 8 22 x 10 23 x 8 22 x 10 NOTE Observe operating rpm ranges as excessive rpm can result in d...

Page 18: ...16 P A R T S L I S T...

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