LH630, LH640, LH685, LH690, LH750, LH755 Service Manual IMPORTANT: Read all safety precautions and instructions carefully before operating equipment. Refer to operating instruction of equipment that this engine powers. Ensure engine is stopped and level before performing any maintenance or service. 2 Safety 3 Maintenance 5 Specifi cations 12 Tools and Aids 15 Troubleshooting 19 Air Cleaner/Intake 20 Fuel System 25 Governor System 26 Lubrication System 28 Electrical System 34 Starter System 38 Cooling System 42 Disassembly/Inspection and Service 59 Reassembly 66 690 01 Rev. C KohlerEngines.com 1