Re: Tachometer sits at 1200 rpm
Tach should zero when power is applied, motor not running. if it doesn't do that, something is wrong. I would take a screwdriver and exercize the setting switch, to get the corrosion off the contacts. The gauge sounds flakey.
Also if you are idling at 1200, it will bang pretty hard when you put it in gear. The gears will not like this!