Put new boyosen rad valve in 1998 yz 125.i had to use die grinder to grind inside of intake of motor.will this affect the way it runs.

Jet 577102 is a bench grinder with 1HP motor. It has got guards on the grinding wheel. Dust vents and guard makes the grinder makes it an efficient grinder. 115 Volt is needed to run this high performance grinder.

I had a similar problem check to make sure the rings line up right and if that dosent work let me know

Chances are that some trash has gotten into the float bowl and is intermittently plugging up the main jet. When the bike dies the suction on the jet dies, the trash is no longer blocking the jet and the bike starts right up.

Machine thinks there are no beans because it is not grinding. Most likely the grinder is blocked. The common causes are a small foreign object, a stale hard bean and moisture (either from water spillage or moist beans). The first thing you should do is vacuum ALL the beans out, set it to the coarsest grind setting and run the grinder a few times ( with no beans). Then put a small amount of fresh beans (make sure they are dry and not from fridge or freezer) in and try again. Give it a few goes. If it still wont grind have a good look down there, if it looks wet let it dry out for a while and try again. If none of thes easy tips help you will have to remove the top grinder burr and clean both burrs. Good luck.

Were you riding it when it jammed because that could mean the that something is sized inside the motor, like the crank or the pistion

try a new plug......have you put to much oil in the petrol???

check that reed valves not sticking and check the pilot jet its prob. half blocked. have to stick a very thin wire through it.

Are you loosing transmission gear oil? I seem to remember an older bike I had with a crank seal issue. Gummed up plug is usually only 2 things:
1) Carb too rich. Check jetting or sticky float needle valve that will dump fuel into the intake manifold.
2) Too much oil (check mixture ratio or crank seals that is mixing crankcase oil with the fuel mixture). Either of these two oil issues should produce a massive amount of tailpipe smoking and a noticable drop in power.

If your carb is clean ..Sounds like you should look at your kill switch ...could be loose wire inside, grounding itself out ...hope this helps! other then that could be starving for fuel (carb adjust)