Need to REMOVE spark plug from HS-4 engine

[ezrider]

Has anyone ever tried removing a spark plug from an HS-4 engine...that has a space opening...of only 7/8" square ? Is there even a tool or wrench...that can get into a tiny space like that ?? Picture attachment included.

 

[KCvale]

Has anyone ever tried removing a spark plug from an HS-4 engine...

Every one I build gets a new NGK 7544 (CR7HIX) Iridium spark plug.
You get a compression boost, and it lasts longer than the bike.

 

[ezrider]

Every one I build gets a new NGK 7544 (CR7HIX) Iridium spark plug.
You get a compression boost, and it lasts longer than the bike.

Was thinking about that...and it won't overheat the HS-4 engine....right ??

_

 

[darwin]

You need a 5/8ths deep socket to remove it. Any auto store will have one to sell ya.

 

[KCvale]

Was thinking about that...and it won't overheat the HS-4 engine....right ??

_

I built bikes in Phoenix in the Summer, they (CR 7's) don't overheat and why I like them ;-}