Greenmech quad trac I feed roller not working

[Grassyass]

I have a green mech quad trac 160 that the feed roller stopped working,so I changed the solenoid,still nothing, swapped the plugs and will work off the out plug, I’m not getting 12v to the plug , any idea what to check next ?.

[Mark Bolam]

@Jase hutch?

[Jase hutch]

What revs are showing at max speed  ?

[Grassyass]

2260  revs , from memory 

[Jase hutch]

Ok , assuming the revs on the display are constant and don't vary by more than 5 - 10 rpm , that's sufficient. 

When you first turn the ignition on and watch the display boot up , does it show 'QC160' before finally showing '0' ?

It's worth taking the black palm switch apart and checking to see that you get continuity between the two wires when the switch is pressed  ?

Also worth removing the forward Herschmann plug (bottom one) from the feedroller control valve  , remove the screw completely and hook out the centre of the plug to check the wire connections ?