Chainsaw Repair

Neighbor is a small engine mechanic.  Saw this on his bench recently.

Clearly 'obvious' once seen; he uses it to suction out fluids.  Easy to make with a common syringe, tube, and spring.

Philbert

I have used many syringes with 2 hands; never thought to add the self-return spring to make it a 1-hand operation!

Philbert