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General| Displacement | 120 cc |
|---|---|
| Ignition | Electronic CDI |
| Carburetor | Walbro |
| Fuel | Gasoline |
| Oil Mix Ratio | 40:1 |
| Compression Ratio | 9.5:1 |
| Fuel Type | Unleaded gasoline |
| Type | 2-stroke gasoline engine |
Ensure all screws and nuts are tight using threadlocker before operation.
Engine must run with shock absorbers for break-in; avoid test stands if possible.
Maintain a safe distance from the rotating propeller; wear protective eyewear.
Details engine power, idle speed, and recommended propeller sizes.
Includes displacement, bore/stroke, compression ratio, and lubrication ratio.
Specifies the operating voltage range for the ignition system.
Identifies key components like choke, throttle, and needles on the carburetor.
Adjust idle speed screw and low-speed needle; use tachometer for high-speed needle.
Synchronize throttle arms to ensure simultaneous full closure and opening.
Ensure ignition sensors #1 and #2 are connected to the correct cylinders to prevent startup failure.
Avoid lean mixtures to prevent engine damage; yellow spark plug indicates optimal mixture.
Describes the sequence for starting a cold engine, including choke and throttle settings.
Outlines the simplified procedure for starting a hot or warm engine.
Use 92# gasoline and 30:1 oil ratio; avoid mixing brands.
Run at 2500 RPM for 1 hour; avoid prolonged low-speed operation.
Regularly inspect fuel lines for leaks between the tank and carburetor.
Keep the engine surface clean for efficient cooling and inspection.
Install mufflers before cylinders to ensure proper alignment and prevent exhaust leaks.
Periodically clean carburetor filters and needle valves to maintain performance.
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