James R. Member Messages 150 Yesterday at 9:48 PM #1 My Hitachi EX120-3 won't increase engine speed in any operating mode. The EC unit, stepper motor, and EC sensor have been repaired or replaced. Has anyone experienced this issue or knows what to check next?
My Hitachi EX120-3 won't increase engine speed in any operating mode. The EC unit, stepper motor, and EC sensor have been repaired or replaced. Has anyone experienced this issue or knows what to check next?
