The answer will depend on what engine is in the mower. If it is a single cylinder more than likely it will be in the front of the engine. If it is a twin cylinder the plugs wille on the sides of the engine. Either way look for a thick black wire going to it about the thickness of a pencil. It will be what that wire goes to on the lower end of the wire.
Rj19l
Rj 19 lm
champion LM 19
Champion 5861 or Autolite 458.
cj14 i just picked one up for it today
You may do serious damage to the lawnmower if the wrong spark plug is installed.
yes
Your owner's manual should explain that.
front right of engine, from driver seat perspective, follow the 1/4 inch spark cable down to where plug is
.030"
This is a Tecumseh engine. According to the Tecumseh web site all small engines have a 0.030 gap
yes