What is this?

[Hawkeye]

Hey there, can someone tell me what this is and what it does? Just wondering

 

[Hawkeye]

Hey there, can someone tell me what this is and what it does? Just wondering View attachment 49960

'97 Sport 4.0 manual

 

[kylepresnell419]

Timing marks.


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[kylepresnell419]

When you connect a timing light to the #1 cylinder you use those marks to set timing advance for spark


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[Hawkeye]

When you connect a timing light to the #1 cylinder you use those marks to set timing advance for spark


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Ahh ok thank you very much!