Hi. Not sure if you have managed to resolve your throttle issue. I used to be a Komatsu Engineer. (Scotland UK). Some gas conversions had a guvernor adaptor which went below the main carb..Inside there is a long sping which is used to adjust the guvernor. Occasionally this spring breaks resulting in no throttle..
Thanks
Pete
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.