Control valve opening control apparatus

A control valve opening control apparatus comprising;

• a pivotally mounted accelerator lever linked to an accelerator operation and having a first engagement member disposed thereon at a distance from a pivotal axis of its pivotal mount,
• a drive lever linked to an actuator and having a second engagement member,
• a pivotally mounted control valve shaft lever assembled integral with a control valve and having a third engagement member disposed thereon at a distance from a pivotal axis of its pivotal mount,
• a link lever having engagement portions for engagement with said first, second and third engagement members such that any one of distances between said first and second engagement members, between said first and third engagement members, and between said second and third engagement members is variable, for linking together said accelerator lever, drive lever and control valve shaft lever, and
• a spring interposed between said link lever and said accelerator lever so as to urge said link lever in a constant direction relative to said accelerator lever.