Symptoms of Malfunction. The failure of the trimmer head to spin when you engage the throttle isn't necessarily a sign of a broken shaft -- it could also be a broken clutch. When the shaft is broken, however, you'll notice excessive vibrations in the shaft housing or in the handles.f you jam the trimmer head against a rock while it is spinning at full throttle, however, the shaft may sever. To get the upper part out, you may have to disassemble the shaft housing from the engine housing. To do this, disconnect the throttle cable and disconnect the ignition wires.
Blue Toe Syndrome. Blue toe syndrome, also known as Trash Foot or Purple Toe Syndrome, is caused by a blockage of the small blood vessels in the foot that reduces the flow of blood and oxygen to the tissues. It usually develops due to a problem higher up the blood stream such as an aneurysm or atherosclerosis.
Vitamins E, B1, B6, B12 and niacin are essential for healthy nerve function. A lack of B12 can lead to pernicious anaemia, an important cause of peripheral neuropathy. However, too much B6 can also cause tingling in the hands and feet. Alcoholism. Alcoholics are more likely to have vitamin deficiencies because of poor dietary habits. Itâs also possible that alcoholism can cause nerve damage.