"I have Mercury 5000RPM tach.
"I have Mercury 5000RPM tach. On the back there are settings: 103T, 121T, 139T and 155T what do those settings mean? But more importantly - can I use this tach on 2 cycle. 12 pole motor?
What is the setting I need to use 103T/121T/139T/155T for 12-pole alternator motor?"
"I have Mercury 5000RPM tach. On the back there are settings: 103T, 121T, 139T and 155T what do those settings mean? But more importantly - can I use this tach on 2 cycle. 12 pole motor?
What is the setting I need to use 103T/121T/139T/155T for 12-pole alternator motor?"
