Try searching youtube. Sometimes, someone from small engine repair shops or individuals will create a video for info. Don't worry as even small engine repair shops may help with free advice. Most small 2-stroke engine brush cutters, weed wackers, blowers are similar in operation, sharing similar engines and layout to figure out where fuel lines go. Basically, the main feed from tank should go to the small carburetor. If an inline filter is used, fuel line to filter, filter output to carb.