I've somehow lost the cap to the gas tank on my Sears Craftsman push lawnmower. I found a container cap that fits, but if I use that on the gas tank the mower quits soon after I start it.
I assume that I should bore a hole in the replacement cap to let some air in, .but I'm not sure how big the hole should be. Should it be as small as possible to avoid gas splashing out? Could it be too small?
And I'm out in the country and weeks go by before I'm anywhere near a lawnmower dealer, but should I eventually get a "real" gas tank cap to replace my improvised one?
Thanks.
Lefty