Summary of FG-57T
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Instruction manual twin-cylinder gasoline four-stroke engine fg-57t.
Page 2: Notice
Warning: read the entire instruction manual to become familiar with the features of the product before operating. Failure to operate the product correctly can result in damage to the product, personal property and cause serious injury. This is a sophisticated hobby product. It must be operated with ...
Page 3: Introduction
Introduction congratulations on purchasing a saito ™ 4-cycle gasoline engine. When cared for properly, these high-quality, finely crafted engines offer many years of modeling enjoyment. This instruction manual has been developed to ensure optimum performance from the saito gasoline engine you have p...
Page 4: Precautionary Guidelines
Anything that can ignite. • always ensure the aircraft is secure and will not move once the engine is started. • always rebind your transmitter to your receiver(s) after setup and before first flight. • always ensure the throttle failsafe is set to low throttle in your transmitter. • always perform ...
Page 5: Disassembly
Disassembly do not needlessly disassemble your saito engine. Only qualified individ- uals should perform engine repairs. Damage due to improper disassembly will not be covered under warranty. Engine parts identification it is important to be able to identify the parts of your saito engine. In the ba...
Page 6: Support Equipment
Support equipment the following items, which are not included with your saito engine, are necessary in order to operate the model engine: 1. Fuel. For maximum protection and longevity of its engines, saito recommends a fuel containing a 20:1 gasoline to oil ratio. We recom- mend a synthetic based oi...
Page 7: Engine Mounting
Caution: never use your bare fingers to start any model engine. This could lead to injury. There are a variety of electric starters on the market. The hangar 9 ® powerpro ™ h-d 12v starter (han162) will work perfectly on all of the twin- cylinder gasoline saito engines. Engine mounting when mounting...
Page 8: Preparing Your Engine
Preparing your engine the first run on any engine, whether 2-cycle or 4-cycle, is critical to the future of the engine itself. During this time, metal mating parts (piston and cylinder, ball bearings, etc.) settle in. Care must be taken that the engine is clean and free of any dust or grit that may ...
Page 9: How to Choke Your Saito
7. Because it is more difficult to set the needles of a 4-stroke engine than a 2-stroke engine by ‘ear’, we highly recommend the use of an optical tachometer (han156) when attempting to set the needles of any 4-stroke engine. 8. Make sure you use a fuel filter between the fuel tank and the engine. A...
Page 10: Manually Starting The Engine
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 c...
Page 11: Carburetor
Peak setting followed by richening to cool. Do this about 10 times throughout the course of this tank of fuel. 5. Leaving the high-speed needle in a peaked condition, check your throttle response, going from low to high and back, gradually lengthening the duration of high rpm. Continue the break-in ...
Page 12: Normal Engine
10 n o r m a l e n g i n e o p e r a t i o n bogs down during the transition, then the idle is too rich and needs to be adjusted leaner. If during the transition the rpm increases quickly, the idle is likely too lean and needs to be adjusted richer. Continue working in this manner until you are sati...
Page 13: Engine Maintenance
E n g i n e m a i n t e n a n c e 11 compound before attaching the two parts together. This will help to keep these parts tight and help prevent any leakage from occurring. 6. The propeller nut and the exhaust locking nuts should be tightened when the engine is hot. Engine maintenance notice: do not...
Page 14: Tips For Extended
12 t i p s f o r e x t e d e d e n g i n e l i f e cylinder in saito engines elongates more than the valve and the clearance gets larger as the engine heats up. Therefore, in cold conditions the clearance should be virtually zero. After several hours of running the occasional check of the tappet cle...
Page 15: Troubleshooting
T r o u b l e s h o o t i n g 13 troubleshooting generally speaking, there are very few things that will keep today’s modern gas engines from starting. To that end, make sure you’re using good quality “fresh” fuel, you have a fully charged ignition battery, and good spark plugs installed. Should the...
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14 p a r t s l i s t twin cylinder gas cross-reference chart twin cylinder gas cross reference chart item p fg-57t 01 cylinder, left 02 cylinder, right 06 piston 07 piston pin 08 piston pin ret 09 piston ring 10 con rod 11 linked con rod 12 conrod linkpin/scr 13 con rod screw 14 cyl screw set 15 cra...
Page 17: Propeller Selection
P r o p e l l e r s e l e c t i o n 15 propeller selection below you will find a propeller selection chart. This chart will enable you to select the best propeller for initial setup of your saito engine. Remember, it is imperative to balance each propeller prior to installation onto your saito engin...
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16 p a r t s l i s t.