Champion J8C
factory gap is 0.027" to 0.033"
Our Techumseh 8HP has a Champion J8C
Champion J8C
The correct spark plug is a Champion RCJ8Y.
According to Champion, the correct gap varies depending upon the application. Most applications show an OEM gap of .025" but a few had an OEM gap of .030". I would set it slightly on the wide side of .025", and it will be good enough.
According to Champion spark plug applications, the correct gap for 1992 Nissan pickup 2.4L engine is .044
Per Champion spark plug applications chart, the gap for 6hp Tecumseh engine is .030
GAP .030"
j8c, its same thing just the copper plus hence the c at the end, same dimensions and everything but more efficient
.030" Champion RJ19LM or J19LM for manual, go to: http://www.disruptit.com/manuals/L0020135.pdf
Spark plug gap according to Champion Spark Plug applications list is .044