Tecumseh Engine no spark
I have a Troy Bilt tiller withe the HH60 6hp Tecumseh engine. I was unable to start it this spring so I checked the fuel supply and found it ok. Next I checked for spark and found none. Given that the tiller is quite old - early 80"s, I decided to do a complete tuneup. I replaced the plug, condenser, points and coil and cleaned all contacts. Still no spark. I checked the "ground off switch" and found it ok, not grounding unless the throttle is closed all the way. However just in case I removed it totally. STILL NO SPARK! ANY SUGGESTIONS???