Diesel Data: Automotive Repair

Choke Unloader

Fig. 12 Checking choke unloader:





1. Fully open the primary throttle valve.
2. Using a feeler gauge, measure the clearance between choke valve and air horn, Fig. 12 The correct clearance should be .089 inch for B2000 models or .128 inch for 626 and B2200 models. If clearance is not within specified limit, bend the throttle adjust arm until correct clearance is obtained.




Choke Unloader Adjustment Specifications:

R = 2.25 +/- 0.25mm (0.089 +/- 0.010in.)