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© 2003 Kohs & Company, Inc - Clarkston, Michigan 48348
Norfolk & Western Y6a Mallet
OPERATION AND MAINTENANCE INSTRUCTIONS
The Kohs & Company Norfolk & Western Y6a locomotive is an exact scale replica of the original
prototype. It is constructed of formed and fabricated brass and incorporates many scale operat-
ing features. Although the model is very sturdily built, the boiler, tender shell and particularly
the detailing are very susceptible to damage by rough or careless handling. To prevent damage,
please exercise great care in unpacking and handling the model. The locomotive is best handled
by lifting under the rear engine cylinders due to the articulated front engine. When touching
the painted surfaces, be advised to wear the supplied gloves to protect the finish.
This locomotive model is designed to operate on Direct Current (DC) electricity. Any applica-
tion of Alternating Current (AC) WILL DESTROY THE INTERNAL ELECTRONIC COM-
PONENTS OF THIS MODEL. Kohs & Company will not be responsible for damage caused
by the application of AC power to the model. We will offer further power supply specification
recommendations under the heading of 'Power Supply Requirements', please make note of the
information offered.
Before unpacking, handling or operating your new model PLEASE TAKE THE TIME TO FULLY
READ THIS MANUAL. This is a small investment in time to protect your substantial financial
investment and to prevent unnecessary disappointment and frustration.
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Table of Contents
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Summary of Contents for Kohs & Company Norfolk & Western Y6a Mallet
- Page 1 © 2003 Kohs & Company, Inc - Clarkston, Michigan 48348 Norfolk & Western Y6a Mallet OPERATION AND MAINTENANCE INSTRUCTIONS The Kohs & Company Norfolk & Western Y6a locomotive is an exact scale replica of the original prototype. It is constructed of formed and fabricated brass and incorporates many scale operat- ing features.
- Page 2 PREPARING THE LOCOMOTIVE FOR OPERATION Although your Y6a is ready to operate, a couple preventive maintenance precautions should be observed to ensure the smooth operation and longevity of the model. First of all, make certain that all of the small fasteners used to assemble the running gear are snug and have not come loose during shipping.
- Page 3 Should you choose to use a less expensive power supply or one which does not meet the above criteria, undesirable operating characteristics may result as well as possible damage to the electronics used in the model. If you have questions regarding your selection, do not hesitate to contact us for advise.
- Page 4 When 'track' power is applied to the locomotive and as soon as the drivers begin to turn, the chuffing of the cylinder exhausts will start in independent 'quarter' synchronization on each engine. Remember, the Y6a was a 'Compound' articulated locomotive, this is important to the chuffing sounds that you will hear;...
- Page 5 The photograph to the left shows the drawbar release hanging down under the operational buffer assembly. The prototypical double drawbar inserts into the two slots just above the release. The Photograph to the right shows the battery holders and wiring harness in place in the tender coal bunker, the battery holders should be placed in the bunker backside to backside.
- Page 6 Shown above is the completed connection of the Y6a and 22C tender, notice the position of the electrical connectors. Pictured above is the sound system control box, in the left view the terminals and markings are visible, in the right view notice the 9V wall adapter transformer and connection location. There are two subjects that were not dealt with in the main body of the instructions, but should be mentioned.
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