Accelerator Pump Stroke
- Remove carburetor air horn. Remove plugs covering accelerator pump plunger and metering rod. Remove float, needle, lifting link, and metering rod. Reinstall carburetor air horn.
- Hold carburetor in vise at idle screw boss. Place dial indicator with 1.6" (40 mm) extension over pump plunger. Measure travel from full closed to full open throttle. Plunger travel should be .240-285" (6.1-7.2 mm).
- To adjust pump stroke, bend connecting rod at lower bend. Lengthening the rod will increase pump stroke, shortening rod will reduce pump stroke. Remove carburetor air horn, and reinstall float and metering rod.
NOTE:
Always check and adjust metering rod after adjusting pump stroke.