Improper operation of this motor could result in bodily harm. Read this instruction manual and heed its warnings. We want this motor to be a source of pleasure.
MESSAGE FROM DUKE FOX
These motors are intended to power model airplanes calling for motors of this size and requiring from .25 to .40 H.P.
There is always the possibility you may lose control of your model. Do not fly in any location where your model might strike people or do property damage should this occur.
Never fly a control line model within 200 feet of power lines. Death by electrocution is possible if your model comes near a power line. Direct contact is not necessary.
Your Fox motor should be mounted in the most rigid and secure manner possible. If the airplane design calls for a firewall type mount, we recommend the #50203 Fox one piece metal mount as it is very rigid. If your airplane is designed for a hardwood beam type mount, be sure they are well braced between the two beams. A plywood firewall alone without cross bracing and gussets just does not do the job right. A flimsy motor mount could result not only in structural damage due to vibration, but can damage the engine due to foaming of the fuel.
RECOMMENDED FUEL, PLUGS AND PROPELLERS
The Fox 19 and 25 run best on our Missle Mist fuel. Lower priced fuel in many cases does work satisfactorily, but for the highest power output, steadiest run, and easiest starting, we recommend Missle Mist fuel. We recommend and 8-5 wood propeller for out Fox 19 and a 9-4 wood propeller for our Fox 25. Many people have an urge to put a larger propeller on because they are going to put it in a smaller airplane. This theory just does not work that way. We recommend you use only wood propellers. Plastic or fiberglass propellers will hurt you a lot worse if you should get your hand in the propeller while running.
Always keep clear of the propeller. It is possible for a propeller to cut a finger off, or for a piece to come off and put an eye out.
FUEL TO USE
We recommend Missle Mist for best performance, or Duke's fuel for economy. Never use a fuel with only synthetic oil. It will appear to work okay, but your motor will wear out in only a few hours.
Model airplane fuel is both flammable and poisonous. Swallowing could cause blindness or death. Vapours ignite readily and serious burns or death could result. Use the same safety precautions you would use with a can of gasoline or a bottle of poison.
TO START YOUR MOTOR
WHEN THINGS DON'T GO SO WELL:
MOTOR WON'T START
MOTOR WON'T KEEP RUNNING WITH GLOW PLUG HEATER OFF
MOTOR GOES LEAN AND QUITS AFTER A COUPLE OF MINUTES FLYING
GLOW PLUG BURNS OUT EVERY FLIGHT
A model iarplane motor can get hot enough to cause a serious burn. Do not touch the motor right after it has been running.
GLOW PLUGS TO USE
Your Fox 19 and Fox 25 should be fittined with Fox Long Thread Glow Plugs. For a good idle on throttle type motors, the idle bar type plug seems better. However, these motors work surprisingly well on the cheaper standard variety.
IN CASE OF CRASH, DO NOT TURN THE PROP OVER YET
OTHERWISE, CONTINUE TO DISASSEMBLE
TO CONTINUE DISASSEMBLY
We want your Fox engine to perform well for you. Technical advice can be gotten by phoning Area Code 501-646-1656. If your motor has become worn or crashed and you desire our factory repair service, mail directly to us. We will disasseble your motor, replace all necessary parts, test run, and return the motor to you all charges collect. It has not proven practical to make any sort of estimates. We will assure you, however, that our charges will never be more than 60 percent of the list price of a new motor.