tach problem

[cfelton]

well, I took the tach out this morning and found it has some small adjustment screws for 4,6,and 8 cyls. I turned the 4 cyl screw down and turned the ignition switch on and it droped to almost zero. It was too cold to hook up the water hose and try it but soon as it warms back up Ill give it a try.It dosent have a dial, just a jumper wire and 3 pins for 4,6,or8 cylinders.It was connected to the 4 pin. Hopefuly its close, if not I know where to adjust it now. thanks spare