mark
Groundie
Posts: 7
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Post by mark on Oct 17, 2009 19:06:48 GMT -5
While I had a few minutes to read the manual that came with my saw, it says to uses a Champion RCJ6 plug the one that is installed in the saw is a Champion RCJ4. I have a new RCJ8 sitting in my tool box would this work as a back up plug? What is the real difference between the 2 plugs RCJ4 and RCJ6 ?  |
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Post by woodplayer on Oct 17, 2009 20:34:20 GMT -5
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Post by MCS on Oct 17, 2009 21:07:55 GMT -5
...and the heat range refers to the operating temperature of the center electrode. Hotter plugs don't have a stronger spark. The engine manufacture chooses a plug based on many things: normal operating RPMs, engine compression, spark advance, cylinder and piston design all come into play.
Most older, pre-plastic, Homelites operate with a Champion plug with a heat range of 6 - CJ6, DJ6J, J6J - where the high revving 750 uses the CJ4 which is one step colder.
Your CJ8 will fit and work short term but why not buy the correct backup plug for $2.
Another tidbit. As close as the XL-12 is to the Super XL, Homelite recommends the CJ8 for the XL-12 and the CJ6 for the Super XL
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mark
Groundie
Posts: 7
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Post by mark on Oct 17, 2009 22:16:53 GMT -5
I think if it runs just fine with the RCJ 4 I just spent the $3 on another just to have on hand.
Thanks ofr all the help on my plastic homie!
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