User manual OS ENGINES MAX-15LD

[. . . ] It is of vital importance, before attempting to operate your engine, to read the general 'SAFETY INSTRUCTIONS AND WARNINGS' section on pages 2-5 of this booklet and to strictly adhere to the advice contained therein. q 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 vehicle, radio control equipment, etc. , are accessible for checking at the same time. q q CONTENTS SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O. S. ENGINE INTRODUCTION, BASIC ENGINE PARTS ENGINE SHIELD, INSTALLATION THROTTLE LINKAGE AIR CLEANER NOTES CONCERNING THE RECOIL STARTER GLOWPLUGS TOOLS, ACCESSORIES, etc. [. . . ] Carefully fit plug finger-tight, before final tightening with the correct size plug wrench. · Fit a plug suitable for the engine. · Use fuel containing a moderate percentage of nitromethane unless more is essential for racing events. battery connected while adjusting the needle. · Do not run the engine too lean and do not leave the 10 When to replace the glowplug Apart from when actually burned out, a plug may need to be replaced because it no longer delivers its best performance, such as when: · Filament surface has roughened and turned white. · Filament coil has become distorted. · Foreign matter has adhered to filament or plug body has corroded. · Engine tends to cut out when idling. · Starting qualities deteriorate. TOOLS, ACCESSORIES, etc. The following items are necessary for operating the engine. As a starting point, we recommend a fuel containing 1020% nitromethane, changing to a fuel containing more nitro only if necessary. When the nitro content of the fuel is increased or the brand of fuel is changed, it is advisable to initially run the engine with a richer needle-valve setting, so that the optimum setting for the new fuel may be rechecked as described in the RUNNING-IN paragraphs. When engines are run at very high speeds and on high-nitro fuels, glowplug elements do not last so long. Reminder! Model engine fuel is poisonous. Do not allow it to come into contact with the eyes or mouth. Always store it in a clearly marked container and out of the reach of children. Model engine fuel is also highly flammable. Keep it away from open flame, excessive heat, sources of sparks, or anything else which might ignite it. FUEL Use only top quality methanol-based model engine fuel. For consistent performance and long engine life, it is advisable to use fuel containing AT LEAST 18% lubricant. This engine is designed to run on both low and high nitromethane content fuels, i. e. from mild mixtures containing a few percent of nitromethane, up to highspeed racing fuels containing 40% nitromethane. Generally, power output is increased-up to a certain point-as the nitromethane content of the fuelis increased. GLOWPLUG BATTERY The power source for heating the glowplug may be either a large heavy-duty 1. 5Volt dry cell, or a 2-Volt rechargeable lead-acid cell with extended leads (or a resistance) to reduce the applied voltage to 11 BATTERY LEADS These are used to conduct current from the battery to the glowplug. glows bright red when energized. · Temporarily remove the glowplug to check that it · Re-check the needle-valve Needle Valve and throttle settings. Turn the needle-valve clockwise slowly and gently until it stops. This is the fully Open Close closed position. Do not use force to turn the needle-valve beyond this point. Open the Needle-Valve 2 turns from the fully closed position. Approx. 0. 3-0. 5mm · Never run your vehicle without fitting the air cleaner. · · Switch on the transmitter and Silencer receiver and set the throttle very slightly opened from the idling position. 13 · DO NOT energize glowplug, but apply electric starter to draw fuel to carburetor. Rear Front · When the engine starts, first allow it to operate in short runs at the very rich starting settings, with the glowplug battery still connected and with its driving wheels clear of the ground. The rich mixture will, under these conditions, provide adequate lubrication and cooling, indicated by profuse smoke from the exhaust. · Now connect glowplug battery lead to heat the plug filament and start the engine. Push the choke button on the fuel tank several times to deliver the fuel to the carburetor. (Do not overprime or the recoil starter cannot be pulled. ) Rotating Direction s In case of the 12/15LD-X · Next, · disconnect the glowplug battery and try running the car on the track. [. . . ] If the front housing needs to be heated to remove or replace the bearing, do not allow the bearing to exceed 120°C (248°F), otherwise it may be damaged and rendered unserviceable. PARTS REPLACEMENT Over a long period, depending on how well your engine is protected from the ingress of harmful dust and grit, and other causes of wear and tear, loss of performance may eventually occur in the form of reduced power, unstable idling, overheating, etc. Inspection may then reveal that the replacement of ballbearings, connecting rod, etc. distributor in your country for replace-ment parts, or full service. 19 MAX-12, 15LD/LD(T) EXPLODED VIEW 1 N. M 2 . 6 x 1 2 ( 1 5 L D ) 3 w 20 4 6 5 7 = q e M. +M2. 6x7 N . [. . . ]