Instructions for purchasing software separately: We only successfully install the software once for you. The software can only be installed remotely by sending a link. This professional technical manual contains service, maintenance, and troubleshooting information for your for YM ENGINE DIAGNOSTIC SERVICE TOOL(YEDST)FOR THE TNV SERIES. It is the manual used in the local service repair shop. For YM ENGINE DIAGNOSTIC SERVICE TOOL(YEDST)FOR THE TNV SERIES manual is guaranteed to be fully useful to save your precious time. This for YM ENGINE DIAGNOSTIC SERVICE TOOL(YEDST)FOR THE TNV SERIES Service Manual has easy to read text sections with top quality diagrams and instructions. They are specifically written for the do it work as well as the experienced mechanic. With step by step instruction and highly detailed exploded pictures, diagrams to show you how to complete the required job correctly, efficiently using. For YM ENGINE DIAGNOSTIC SERVICE TOOL(YEDST)FOR THE TNV SERIES Service Repair Manual covers every single detail on your machine provides step-by-step instructions based on the complete disassembly of the machine. Problems encountered with the tester tool. 1- The tester does not work when it is connected. 2- The connection cable may be faulty. 3- Possible software is not installed. 4- When working, you open the anti-virus software of this computer. 5- Software installation problems. 6- Do not update the software after installation. 7- I need a remote software to help you install. 8- It is recommended to use WIN10-64 bit system computer. Applicable to: For Yama diesel excavator tractor diagnostic tool. Engine special tester For Yama diagnostic instrument decoder. Note: This Yama diagnostic tool can only diagnose engine faults and cannot modify any data (if there is an official account, it has the conditions to modify data). Before placing an order, please confirm whether your equipment is the engine of Yama. Due to the technical cost involved in installation, we will only successfully install the software for you once. We can guarantee that the software installed for free for the first time is normal and working.