In the wet area, the motor should be wiped clean before the motor is stored. After drying, put it in a plastic bag, put a suitable amount of dry lime in the new kiln into the plastic bag, and then put the plastic bag. Mouth tightly, replace the lime block in the plastic bag every 3 months or so to effectively prevent the motor from getting damp. When the windshield of a windshield motor vehicle is dirty, it should be washed with clean water and then wiped dry. If wipers are used directly or wiped directly with a cloth, the glass is often shaved, which is detrimental to driving safety. Buying new parts with old parts Many of the pilots buy parts, and sometimes even run a few miles, not the model is wrong, or the size is different. For example, the pistons of the 95 series diesel engines are high and low, and the piston rings are wide and narrow. Therefore, when buying parts, it is best to take the data or take the old parts to avoid buying the wrong ones. Clever row of hand-held automatic steering tractor steering gear by the steering spring force and the central drive gear meshing. The weakening of the spring elasticity makes it easy to disengage the steering gear from the central transmission gear, resulting in the automatic steering of the tractor. At this point, spacers can be properly added between the steering spring and the bearing to increase spring force and eliminate auto steering failure. When judging that a motorized vehicle is driving off the road, if a bumpy vehicle is bumpy, it may be able to take off. After the gear is disengaged, it is re-attached to a certain file. If the file is very light, the reason for self-shifting is that the variable-speed self-locking device is ineffective. If there is a certain resistance after re-engaging, check that the connection between the transmission and the flywheel housing is loose.