How to Test a Small Engine for Spark
If your small engine isn't starting, you'll need to diagnose many issues including the spark plug. This video walks you through the steps of how to test for a spark using a spark tester.
my cs6700 will not run at full throttle. I've been told that it likely needs a new carburator. Cause: most likely ethanol in gas. Does this sound likely? Can I get away with a repair kit or should I get the whole carb assembly? Is it relatively straightforward to replace?
My auto oiler was not working at end of season. I have cleaned the channels and holes the oil flows thru. Is there anything further I should do? Since I have it apart, is there a way to check auto oil operation other than running. The manual push button oiler works okay.
The first thing you might try is taking off the air inlet filter item number 11 on the breakdown, part number 43620514730. Run your chainsaw and check to see if the oil is flowing, if it is replace the filter. If that is not the problem most likely it will be your auto oiler assembly item number 4 on the breakdown, part number43700237530. Since internal parts are not available for the pump you will need to purchase the complete assembly.
Hope this helps,