Specifications

Fig. 72

12. Install fixed main jets (20), Fig. 73, plugs and

washers.

Model 351700

Left (#1) cylinder is equipped with #98 main jet.

Right (#2) cylinder is equipped with #100 main jet.

Model 351400

Left (#1) cylinder is equipped with #94 main jet.

Right (#2) cylinder is equipped with #98 main jet.

Model 380700

Left (#1) cylinder is equipped with #118 main jet.

Right (#2) cylinder is equipped with #116 main jet.

Model 380400

Left (#1) cylinder is equipped with #112 main jet.

Right (#2) cylinder is equipped with #114 main jet.

Fig. 73

13. Install lower body gasket (21), Fig. 74. Make

sure gasket does not twist or kink.

Fig. 74

14. Assemble lower body with main jet plugs (23)

facing throttle shaft side (24) of carburetor. Make

sure gasket remains in position, Fig. 75. Tighten

screws (22) securely.

15. Install anti-afterfire solenoid with washer.

Torque to 90 in. lbs. (10 Nm).

Fig. 75

Nikki Carburetor

Models 290400, 303400, 350400 (After 950731xx)

Check Throttle, Choke Shaft and Body For Wear

NOTE: The measurement in Step 1 is taken with the

carburetor off of the intake manifold.

1. Lay carburetor on 1/4” (6.35 mm) raised flat

surface (1). Use a feeler gauge (2) to check

throttle and choke shaft clearance as shown in

Fig. 76.

Throttle shaft and choke shaft clearance must not

exceed 0.010” (0.25 mm).

For Briggs & Stratton Discount Parts Call 606-678-9623 or 606-561-4983