This is an instruction manual for O.S. engines. It emphasizes the importance of safety instructions and warns users to strictly adhere to them. The manual provides information on the engine's construction, installation of accessories and replacement parts, as well as the installation of a glowplug and carburetor controls. It also includes instructions on starting the engine, running-in (breaking-in), final adjustment, carburetor cleanliness, care and maintenance, checking the engine, guarantee, and troubleshooting. The manual concludes with exploded views and parts lists for the engine and carburetor, as well as a three-view drawing.
This manual provides comprehensive instructions for the O.S. MAX-21VZ-M engine, designed expressly for 21 class boat racing. It emphasizes safety precautions regarding the internal combustion machine, fuel handling, and operating environment to prevent injury or damage. Key sections include safety warnings, engine construction details, and specific notes on installing the flywheel and applying an electric starter.
| Intended Use | 21 class boat racing |
|---|---|
| Carburetor Size | 10mm 21D |
| Included Glow Plug | P7 |
| Included Flywheel | No.2K Assembly |
| Standard Head Gasket Thickness | 0.2mm |
| Recommended Fuel Nitro Content | 10-30% |
| Recommended Electric Starter Voltage | 12-volt |
| Recommended Silicone Tubing Inner Diameter | 2.3-2.5mm |
We recommend a fuel containing 20% nitromethane as a starting point.
No, we do not recommend running the boat on the sea or in saltwater environments due to corrosion risks.
Remove the glowplug, close the needle-valve, and apply the starter to pump out surplus fuel.