Service and Troubleshooting Guide. Diagnosis, disassmbly, and repair instuctions specific to vertical shaft 10kW standby generators. 10kW Models included 040243, 040243A, 040246, 040246A, 040247, 040312, 040312A, 040316, 040316GEC, 040321, 040329, 040329GEC NOTE: a licensed electrician or plumber is/may be required to perform some repairs