what causes this is when the oil pump is broke or when it may get clogged with sludge from the old oil and there is no oil pressure at the crank journals and this creates friction because theres no oil and it spins a bearing this may also cause a rod to spin a bearing at the same time!!
Yes cam bearings can spin and block the oil gallery holes, therefore stoping oil from getting to the top of the engine.
backfiring.
the engine inside causes the propeler to spin
So your wheels spin.(;
Bearings are used to let the wheels spin freely and with minimal drag.
Usually caused by pulley mis-alignment or bad bearings. With the belt off, try turning each pulley with your hand to see if the bearings spin freely and smooth.
The answer is WD-40. It really improves your bearings. This answer is from James P.
if you rub it into your bearings they spin faster and longer
To make the wheels spin easily.
Spin causes electrons to exhibit magnetism.
the cones on any kind of bike are the thing that holds the bearings in the front hub so it can spin they screw on the axle and they hold in the bearings and that + the cup (AKA bearing race )is what the they spin on
the wheels spin slower than usuall, or they dont spin very smoothly