First, when checking the ignition system circuit failure, do not use a scraping method to check the circuit on and off, this approach is easy to damage electronic components, the circuit should be off or not with a multimeter to check the judgment. Second, in the engine start and work, do not touch the ignition coil high voltage wire and distributor, etc. in order to avoid electric shock. Third, when disassembling the battery, the refueling vehicle must confirm that the ignition switch and all other electrical equipment and its switches have been turned off for disassembly. Fourth, when installing the battery, be sure to identify the positive and negative poles, negative ground. Do not connect wrongly. The polarity of the battery and the clip must be firmly connected. Otherwise, the electronic device may be easily damaged. 5. When conducting high-voltage test fire, it is best to use the insulating rubber clips to test any high-voltage wire. The refueling vehicle can easily cause electric shock by directly touching the high-voltage wire. Another way to avoid electric shock is to insert the high-voltage wire into a spare spark plug. Then place the spark plug housing on the ground and watch for sparks from the spark plug electrode gap. 6. In the case of the ignition switch on, the fuel tanker should not do the operation of connecting or cutting off the line so as not to burn out the electronic components in the controller. My company mainly engaged in oil tankers , tankers , refueling vehicles , oil trucks and hundreds of varieties, warmly welcome customers to come to consult purchase. Sales Hotline Manager Yang 17-4 PH Stainless Steel Pin & Shaft Electrical Fan Shaft,Stainless Steel Shaft,Stainless Steel Pin,High Precision Shaft Yihua Precision Machining Co, Ltd. , https://www.yhmachining.com