Renowned Japanese manufacturer of high-performance 4-stroke gasoline and glow engines for radio-controlled model aircraft.
Saito Seisakusho Co., Ltd., widely known as Saito Engines, is a premier Japanese manufacturer specializing in 4-stroke internal combustion engines for radio-controlled (RC) aircraft. Since its establishment, Saito has built a global reputation for engineering excellence, producing distinctively crafted engines known for their reliability, impressive power-to-weight ratios, and realistic exhaust sounds.
The company offers a diverse lineup ranging from single-cylinder gasoline and glow engines to intricate multi-cylinder radial engines, catering to scale modelers and hobbyists seeking authentic aviation performance. With a focus on precision manufacturing in Japan, Saito continues to set industry standards for 4-stroke model engine technology.
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For Saito gasoline engines, the recommended fuel mixture is regular or high-octane gasoline mixed with high-quality 2-stroke engine oil at a ratio of 15:1 to 20:1. A 15:1 ratio is strictly recommended during the break-in process.
Valve clearance should be checked and adjusted after the initial break-in and subsequently every 2 hours of operation. This adjustment must be performed while the engine is cold.
Most Saito gasoline engines (such as the FG series) use the CM-6 spark plug. Refer to your specific engine manual for confirmation.
The break-in process typically involves running the engine with a rich fuel mixture (15:1 ratio) for approximately 1 liter of fuel. The main needle should be opened approximately 3 turns from fully closed, and the engine should not be run lean during this phase.
No, it is recommended to avoid using gasoline containing ethanol. Ethanol can cause power loss and lead to corrosion inside the engine components.