the correct gap is .30
E3.16rdj7j
Two compatible spark plugs for a Troybilt weed whacker that currently has a spark plug with a model number of 794 00055 is the Champion E3.16 or the Champion Spark plug RDJ7J. Both of these spark plugs will give your weed whacker the starting power needed in a replacement. You can buy them here http://www.mymowerparts.com/partdetail/1060/1042/10783.php
E3.16 or champion RDJ7J
Impossible to answer, depends on what model KTM you have.
The correct spark plug for this model is the NGK B-7ES.
0.75mm
Champion RDJ7Y is the correct number.
.035
0.35
if you buy the correct spark plugs , they are preset at factory to the right setting for your car
The correct spark plug gap for the 1979 model, 100 hp Johnson outboard is .030 in.