As used in homelite string trimmers is calls for .025. Other units may be different.
The correct spark plug for a Stihl 024 is an RCJ6Y (Champion), BPMR7A (NGK), or a WSR6F (Bosch). Make sure that the gap is set to 0.020 inches.
Champion RCJ6Y
The spark plug gap is 09.96 The spark plug gap is 09.96
.045 spark plug gap
spark plug gap for a 2.2l is 0.060"
spark plug gap is .044
The spark plug gap is .054"
0.9MM with spark plug gap tool.
The spark plug gap is .054"
The Spark Plug gap is .045
Spark plug gap is .060
0.32 gap spark plug