Take it to a shop
Could be a number of reasons. The line is old "if so it tends to break easily" or inexpensive strimmer line can be suseptable to snapping easily.
I don't understand your question ...
with a lawn moer or a strimmer
Strimmer.
25-1
you open the gas cap to release any charge from the line
I have a Tondu S180 strimmer. The petrol to oil ratio is 25:1. This information is embossed on the fuel tank filler cap on my machine. Peter.
Remove the line and replace it. Then make sure to keep the master cylinder full while you & a helper bleed the front brake caliber. Be sure and use brake line tools and not open-end wrenches or you will damage the brake lines.
40to1
kawasaki tg33
how much to replace the transmission line in 2006 Chevy impala
Open the bleeder valve on the 1990 F150 wheel that needs a line replaced. When the fluid stops flowing, loosen the line connections and remove the line. Install the new line, and bleed the brake lines after the reservoir has been refilled.