Key facts
- Manuals
- 27
- Languages
- EN · ZH
- Last added
- 2026-10-19
Featured OS manuals

O.S. SPEED 21XZ-B TY 110% Engine User Manual
This manual provides essential safety instructions and operational guidelines for the O.S. SPEED 21XZ-B TY 110% engine, a high-performance internal-combustion machine intended for model cars. It emphasizes the importance of reading safety warnings regarding fuel toxicity, flammability, and noise before attempting to operate the device. The document outlines specific precautions to prevent injury from hot engine parts, carbon monoxide exposure, and moving components.
Covers: SAFETY INSTRUCTIONS AND WARNINGS · ENGINE CONSTRUCTION · TOOLS AND ACCESSORIES · INSTALLATION OF THE CARBURETOR · ENGINE INSTALLATION · RUNNING-IN PROCEDURE

O.S. SPEED R2103 Engine User Manual
The document serves as a comprehensive guide for the operation and care of the O.S. SPEED R2103 internal combustion engine. It emphasizes strict adherence to safety warnings regarding fuel handling, heat hazards, and carbon monoxide exhaust before attempting to operate the device. The manual details the specific construction features of the engine, including its piston, cylinder liner, and crankshaft design.
Covers: SAFETY INSTRUCTIONS AND WARNINGS · ENGINE CONSTRUCTION · CARBURETOR ADJUSTMENT · INSTALLATION OF THE CARBURETOR · ENGINE INSTALLATION · STARTING THE ENGINE & RUNNING-IN

O.S. MAX-CZ-R Engine User Manual
This manual provides operating instructions for the O.S. MAX-CZ-R engine, a 2.11cc two-stroke model equipped with an O.S. Type 2BK carburettor and a recoil starter developed by Kyosho Corporation. It covers essential pre-operational checks, safety warnings regarding throttle settings, and specific fuel recommendations containing nitromethane.
Covers: Specifications · Pre-Operational Checks · Glowplug · Fuel Recommendations · Running-in Procedures · Carburettor Adjustments

OS OS-1022/2062 Digital Storage Oscilloscope User Manual
This user manual covers the OS Series handheld digital storage oscilloscopes, specifically models OS-1022 and OS-2062. It includes comprehensive guidance on safety requirements, general features, and initial setup procedures such as connecting the device and performing automatic settings. The guide details the operation of the oscilloscope interface, including manual and automatic configuration of vertical and horizontal systems, trigger controls, and various display modes like persistence and peak detection.
In addition to oscilloscope functions, the manual explains how to use the built-in multimeter for measurements such as resistance, capacitance, and voltage. It also covers advanced features like mathematical calculation functions, waveform averaging, and data storage using USB drives. The document concludes with troubleshooting steps and a list of technical specifications. This manual is written in Chinese.
Covers: Product Certificate · Safety Information · General Features · Initial Use · Oscilloscope Connection · Multimeter Usage
Latest OS manuals
O.S. SPEED 21XZ-B TY 110% Engine User Manual
User Manual 2 pages · 1.7 MB · ENUser manual for the O.S. SPEED 21XZ-B TY 110% model engine, covering safety, installation, carburetor adjustment, and maintenance procedures.
O.S. SPEED R2103 Engine User Manual
User Manual 2 pages · 2 MB · ENThis user manual provides safety instructions, operating guidelines, installation procedures, and maintenance tips for the O.S. SPEED R2103 model engine…
O.S. MAX-CZ-R Engine User Manual
User Manual 2 pages · 337 KB · ENOperating and maintenance instructions for the O.S. MAX-CZ-R 2-stroke engine, including specifications, running-in procedures, and carburetor adjustments.
OS OS-1022/2062 Digital Storage Oscilloscope User Manual
User Manual 108 pages · 1.5 MB · ZHThis manual provides operating instructions, safety information, and specifications for the OS OS-1022 (20MHz) and OS-2062 (60MHz) digital storage…
O.S. Engine Operation and Maintenance Manual
User Manual 2 pages · 2 MB · ENThis manual provides safety instructions, operating procedures, and maintenance guidelines for O.S. model engines, specifically covering starting…
O.S. UX108 Engine Owner's Instruction Manual
User Manual 28 pages · 889 KB · ENOwner's instruction manual for the O.S. UX108 model aircraft engine, covering safety, installation, starting, and maintenance.
O.S. FS-70S II, FS-91S II, FS-91S II-P Four Cycle Engine Owner's Instruction Manual
User Manual 15 pages · 1 MB · ENThis manual provides operating instructions, safety warnings, installation steps, and maintenance guidelines for O.S. FS-70S II, FS-91S II, and FS-91S II-P…
O.S. 49-PI Type II Rotary Engine Instruction Manual
User Manual 19 pages · 794 KB · ENInstruction manual for the O.S. 49-PI Type II rotary engine, covering safety, operation, installation, and maintenance.
O.S. WT1070 Four Stroke Gasoline Engine User Manual
User Manual 4 pages · 2.3 MB · ENSafety and operating instructions for the O.S. WT1070 four-stroke gasoline engine designed for model aircraft.
OS FT-300 Engine Owner's Instruction Manual
User Manual 17 pages · 1.3 MB · ENThis manual provides operating instructions, safety warnings, installation guides, and maintenance procedures for the OS FT-300 horizontally-opposed…
O.S. MAX-37SZ-H RING Engine Operation Manual
User Manual 2 pages · 759 KB · ENOperation and installation manual for the O.S. MAX-37SZ-H RING high-performance engine designed for small-sized radio-controlled helicopters.
O.S. FS-120S-E Four Cycle Engine Owner's Instruction Manual
User Manual 13 pages · 733 KB · ENThis manual provides installation, operation, maintenance, and safety instructions for the O.S. FS-120S-E four-stroke model aircraft engine.
O.S. MAX-55HZ-R Helicopter Engine Safety Instruction Manual
User Manual 4 pages · 1.3 MB · ENSafety and operating instructions for the O.S. MAX-55HZ-R high-speed helicopter engine, covering warnings, installation, and carburetor adjustment.
O.S. max-15LA-S/25LA-S/40LA-S/46LA-S Instruction Manual
User Manual 16 pages · 1.1 MB · ENThis manual provides installation, starting, running-in, maintenance, and troubleshooting instructions for O.S. LA-S series model aircraft engines.
O.S. GF30II Four Stroke Gasoline Engine User Manual
User Manual 2 pages · 1.6 MB · ENThis manual provides safety instructions, installation guidelines, and operating procedures for the O.S. GF30II four-stroke gasoline engine designed for…
- 1
- 2
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in OS manuals
What is the intended use of this engine?
This engine is intended for model cars and should not be used for any other purpose.
What safety precautions are required regarding fuel?
Model engine fuel is poisonous and highly flammable; it must be stored in a clearly marked container out of the reach of children and away from open flames.
What safety precautions are required when handling model engine fuel?
Fuel is poisonous and highly flammable; it should be stored in a clearly marked container out of reach of children and kept away from open flames or sparks.
What is the maximum safe distance for onlookers when preparing the model?
Keep all onlookers, especially small children, at least 20 feet or 6 meters away.
What type of glowplug does this engine use?
An O.S. No.8 glowplug is fitted to the engine.
What fuel mixture is recommended for running-in?
Use top quality commercial model two-stroke engine fuel containing not less than 18% lubricant.
