How do you remove the crankshaft pulley for1983 Mazda 929?

One useful trick for removing the crank bolt on the crank pulley is to place a breaker bar with socket (highly recommend a 1/2" setup in the minimum as 3/8" sockets don't fair well with high amounts of torque) on the crank bolt so as the handle of the breaker bar is resting against the frame of the vehicle and the socket is firmly on the crank bolt. Do bare in mind that the engine turns clockwise (some few motors do turn counter clockwise-- please check service manual to determine direction of rotation) as this will affect the location of the handle. Once the breaker bar is in place you will want to "bump" the motor or in other Words start the car but only long enough to allow one or two rotations of the engine and absolutely no more. Once this is done the crank bolt should be finger loose. This information is provided in that the bolt may be holding you back and with the utmost caution as this is a risky procedure in which someone could be hurt by flying tools or that damage may occur to the crank bolt or frame if poor judgment is used in the correct placing of the tool. OtherWords, make sure the socket is firmly on the bolt and that the handle is not going to crush something weak such as a plastic piece or something of the sort. Good Luck!