Doug Penn describes how to check or change gear oil in a typical outboard motor. In this case it is a 1968 Eska.
This one covers the thermopile wiring on the gas fireplace. This video is part of the heating and cooling series of training videos made to accompany my websites: www.graycoolingman.com and www.grayfurnaceman.com to pass on what I have learned in many years of service and repair. If you have suggestions or comments they are welcome.
If you are a homeowner looking to repair your own appliance, understand that the voltages can be lethal, the fuels are highly flammable and high pressures are used. Know your limits.