I recently broke a bolt off inside of my throttle

SOURCE: 2 bolts holding exhaust onto.engine

At the very best, this will be difficult ... but not as impossible as you think it is right now.

If I were doing this procedure (and I have done this procedure), I would get a can of penetrating oil (Liquid Wrench is available in my area) and I would spray the shafts with this product and gently but firmly trap on the broken bolt shafts with a hammer. I would do this several times over the course of as many days. If there is enough shaft to catch with vice grips, gently try to remove the bolt while tapping on the bolt with a hammer. DON'T BREAK MORE BOLT OFF.

If this doesn't work, you will have to file the top of the broken bolt flat. Do the best you can on this. Center punch the bolt carefully in the center, of course. Get a "easy out" from your full service auto parts store or hardware store. Get the proper size for your particular bolt ... they come in all sizes of course. Also get the recommended size drill for the "easy out". Don't count on good performance from a drill you may already have in your tool box. You only get one try at this at this point. Carefully drill the center of the bolt out deep enough for the "easy out" to get a grip on the bolt. More penetrating oil, more tapping and gently try to remove the bolt.

If this doesn't work, you can get the next size "easy out" and try the procedure again. Your goal here is to not damage the engine. You just want the bolt out.

If there is still no joy, get the drill that is two numbers smaller than the equivalent shaft size of the bolt and drill the bolt out. If number size drills are not available in your area, ask at the hardware store for a recommended drill. Of course, you will have to know the size of the bolt. Find the proper size thread "tap" and clean out the hole the best you can. If you have been very careful and not damaged the threads, you will be able to use the bolt hole again.

If you have damaged the threads beyond safe usage, the next step is to go back to the auto parts store and learn about Heli-Coil inserts. Here is information on that product: http://www.noblefix.com/ The upshot is you will drill the damaged hole or holes according to the instructions that accompany the repair kit. Insert the Heli-coil and you will have a brand new bolt hole. Do this carefully and you will never have to repair these holes again.

I hope my experience in this area will be of value to you and I wish you the best with your BWS Scooter.

Thanks for your question @ FixYa.com. If this was helpful to you, the courtesy of positive remarks and vote will be appreciated.

SOURCE: 99 kawasaki kx 125 2-stroke wont start or stay

I would check the compression of the piston, the rings could be stuck and not have good compression. It should show 120 psi or more. Also can pull off the exhaust and look in the exhaust port to see the rings, piston, and cylinder walls. If the motor has a power valve make sure that is not gummed up or stuck. Mark C

Testimonial: "It was good advise, I still have not fixed the problem, but we are working on a solution as we speak. trying to narrow it down and we are close"

Marvin

• 85242 Answers
• Posted on Aug 05, 2011

SOURCE: 1979 Yamaha triple with Mikumi

The manual calls for 5/8-1 turn, that will give you a lean starting point, from then on you will need a carburetor balancing tool, adjust the carbs for the lean best idle. These screws were factory sealed and even during carb overhaul should have never been touched, when the carbs are clean the balancing is done with the throttle stop screws.