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Assuming (probably incorrectly) that you are talking about car engines:
It probably depends on the engine, and I question why you would ever want to rotate an engine in the opposite direction from how it is designed to run. But if I wanted to move an engine in the wrong direction, I would put a socket wrench on the front of the crankshaft, generally in the middle of the engine's lower pulley. I would first disconnect the negative battery cable, as you never want to risk the engine starting to fire and move on its own when you are working on it.
These generic hints would work on most traditional front engine rear wheel drive american car engines of the 50's thru 70's and beyond. (also on some Volvos, Suzuki Samurais, MBZ, and BMWs I have worked on.)
What else can I help you with?
How do you identify pin 1 on an IC?
IC pins are numbered anti-clockwise around the IC starting near the notch or dot.
Working and principle of stepper motor?
there are different types of stepper motors according to there working voltage such as 5-24v. there are different types and number of wires. this motor moves clock and anti clock wise .
Contrast the scr and the triac?
Essentially an Scr is a solid state switch that will only allow current to flow in one direction. A triac is essentially two scr's in Anti- parallel that allows current to pass in both directions.
What can be used to prevent electrostatic discharge (ESD)?
Anti-static wrist band w/ alligator or ground clip. Anti-static workbench mat. Anti-static floor mat. Touch unpainted metal of computer case to discharge any buildup DO NOT touch any computer component metal contacts of chips, etc. COMMON SENSE
How do anti shoplifting tags work?
There are many different types of tags. Some of the more commonly used are the radio frequency tags, electromagnetic and acoustic magnetic system. You can information on how each works here. http://electronics.howstuffworks.com/anti-shoplifting-device3.htm
How do you rotate a figure 270 degrees clockwise around the origin?
Move it 3 times* * * * *or once in the anti-clockwise direction.
Why does surface tension happens?
It Occurs when you have particles that rotate in an ANTI-Clockwise direction and spin in an axis.
Write a code to continuously rotate a pentagon about a corner point in the anti-clockwise direction?
[object Object]
What direction is the rotation of a typhoon?
A typhoon, that is, a tropical cyclone that forms in the northwestern Pacific Ocean, rotates in an anti-clockwise direction.
Why do fans rotate in anticlockwise direction?
Anti clockwise is used in the winter to bring heat down to the room. during the summer you would use the clockwise motion
What way is anti clockwise?
Anti clockwise means to the left. clockwise goes to the right. if you get stuck look at a clock. the hand pointing left is anti clockwise. Go to the right it's clockwise.
Which way does Jupiter rotate?
anti-clockwise
What direction do revolving doors turn?
anti clockwise or clockwise - it depends - in North America its clockwise but in the UK it is anti clockwise
Which direction does the earth rotate as view frum the north pole?
From above the North Pole, the Earth rotates anti-clockwise, or right to left.
How does Jupiter rotate?
Jupiter rotates on its axis, completing one full rotation approximately every 9.9 hours. This rapid rotation causes the planet to have an oblate shape, bulging at the equator and flattening at the poles.
Why plants rotate anti clockwise?
They turn back towards the light
What does it mean when an angle is negative?
An angle is a measure of turn. the amount of turn is the magnitude, measured in degrees, and direction of turn can be clockwise or anti-clockwise. A positive angle turns in an anti-clockwise direction while a negative angle turns in a clockwise direction.
