O.S. engine MAX-25FX - User Manual

It is of vital importance, before attempting to
operate your engine, to read the general
'SAFETY INSTRUCTIONS AND WARNINGS'
section on pages 2-6 of this booklet and to strictly
adhere to the advice contained therein.
●
Also, please study the entire contents of this
instruction manual, so as to familiarize yourself
with the controls and other features of the
engine.
Keep these instructions in a safe place so that
you may readily refer to them whenever
necessary.
It is suggested that any instructions supplied
with the aircraft, radio control equipment, etc.,
are accessible for checking at the same time.
●
●
MAX-15CV-A, 25FX, 32SX

O.S. engine MAX-25FX Specifications

General

Brand	O.S. engine
Model	MAX-25FX
Category	Engine
Language	English

Summary

Safety Instructions and Warnings

General Warnings

Details critical safety warnings regarding propeller, fuel, and engine heat.

General Notes and Precautions

Provides guidance on engine mounting, silencer use, glow plug handling, and propeller installation.

Introduction and Engine Preparation

Engine Introduction and Glowplug Installation

Overview of engine suitability and instructions for installing the glowplug.

Engine Installation

Model Mounting and Screw Fastening

Guidance on secure engine mounting and fastening mounting screws.

Throttle Linkage and Silencer

Glowplug Usage

Glowplug Life and Replacement

Information on glowplug expendability, lifespan, and replacement criteria.

Fuel and Propellers

Mixture Controls and Starting Preparation

Mixture Control Valve Operation

Explains the role of the needle valve and mixture control valve.

Tools and Accessories for Starting

Lists necessary items for operating the engine: fuel, glowplug, propeller.

Starting Procedure

Running-In (Breaking-in)

Needle-Valve Adjustment Diagram

Idling Adjustment Chart

Carburetor Adjustment and Realignment

Mixture Control Valve Adjustment

Guidance on adjusting the mixture control valve for optimal performance.

Realignment of Mixture Control Valve

Procedure to re-establish the effective adjustment range of the mixture control valve.

Carburetor Cleanliness and Engine Maintenance

Engine Care and Maintenance

Procedures for draining fuel, after-run oil, and engine care after use.

Exploded View (15 CV-A)

Engine Parts List (15 CV-A)

Exploded View (25 FX,32 SX)

Engine Parts List (25 FX,32 SX)

Carburetor Diagrams and Parts Lists

Carburetor 10 K (15 CV-A)

Diagram and parts list for the 10K carburetor.

Carburetor 20 D (25 FX)

Diagram and parts list for the 20D carburetor.

Carburetor Diagrams and Engine Specifications

Carburetor 20 F (32 SX)

Diagram and parts list for the 20F carburetor.

MAX-15 CV-A Specifications

Technical specifications for the MAX-15CV-A engine.

Engine Drawings and Specifications

Three View Drawing MAX-25 FX

Dimensional drawings for the MAX-25FX engine.

Specifications MAX-32 SX

Technical specifications for the MAX-32SX engine.