Small Engines (Lawn Mowers, etc.): electrical, engine mechanics, black lead

Question
John, my question is how do small engine mechanics test the wiring.I understand how they use jumpers on the switches and test the starter and solenoid.Checking wires i do not undertsand to see if power is going through and the volts.

Answer
 Hello Andrew:

 To Test the Voltage. Take a Multimeter and Set it to the Voltage you Wish to Check (ie. 12DC Volts 50VDC Volts, 110AC, 220AC Volts). Ground the Black Lead from the Tester and then Check the Wire for the Proper Voltage. Example: Ground the Multitester (Black Lead) and then Hold the Red Lead on the Large Post of the Starter. Turn the Ignition Switch and Watch the Meter. It will Move and Show How Much Voltage is Going to the Starter when the Starter is Engaged. I have a Multitester that I Made Long Test Leads for. The Leads are 4' Long and are Used when Checking Continuity (Checking for Breaks in the Wire) of a Wire. You Shouldn't Need the Long Leads Unless you are Working in a Shop; then the Long Leads Might be Used Once or Twice a Year. Usually I Check for Voltage and if there is Supposed to be Voltage and None is Present and I Can't Locate a Reason for No Voltage on the Wire; I Use the Long Leads and Check the Continuity of the Wire. Hope this Helps. I am here if you Require more Assistance. Thanks.

 Good Luck

 Respectfully

 John