I use a quart bottle like the ones you buy for rear end
oil, they usually have the "cone" top on them that you snip the end off of....I take about 8 to 10 inches of small clear tubing,stick on the snipped off end and fill the carb bowls thru the vent tubes, little to no spillage.....
work the throttle linkage a time or two till you see the squirters shooting gas down the carb and then fire it up, should start right up.......
David