The little rubber plunger that you push with your thumb has a crack in it. How can I replace it or fix it?

Matt in Fairfax Virginia, April 2009

You can find the part on Ebay for a couple bucks or go to Local Power Tool Supply which will charge you $5 - $7 bucks. JD BC1600 was made by Homelite and I believe the Carb is a Zama H46 24A.

Also check for rotted out fuel lines, mine had both these problems after leaving mixed fuel in the tank for a couple years.

I replaced the primer bulb & fuel lines for under $10 bucks and she runs great again!

JimSmith, September 2009

That is called the primer bulb. Remove the bulb by taking the two screws adjacent to it out, then take it to a lawnmower/small engine repair shop. They will likely have one that will swap with it.

Ray, May 2009