The replacement is a Champion CJ-8
a ngk cr7hsa spark plug
Rj19lm
ngk Bm6a its the same plug
bp4 ngk
on the back of the plug package it has : replaces CJ8, RCJ8, J19LM & RJ19LM. hope this helps.
ngk Bm6a its the same plug
Spark plug gap should be .025 http://store.chainsawr.com/
Champion J19LM or RJ19LM
Looks like the RJ19LM
0.030"
anywhere between 16 and 18 on a spark plug gauge should work fine.
To determine the correct spark plug for a Sears chainsaw, you should first check the owner's manual or the chainsaw's specifications for the recommended spark plug model. Commonly used spark plugs for Sears chainsaws include models like Champion RCJ7Y or NGK BPMR7A, but this can vary by specific model. If the manual is unavailable, you can also consult a local hardware store or a chainsaw specialist for assistance in finding the right spark plug. Always ensure the spark plug matches the required size and specifications for optimal performance.