Flyer smoke unit in tender.

Little new to the smoke unit in the tender. After all these year, I finnally got a American Flyer engine with the smoke unit in the tender. My question is where do I put the smoke fluid???

That’s the way they made them in the 1940s

A fluid goes in the small screw cap on the top of the tender. Make shure the hollow plastic tube is connected between the Tender and the Locomotive.

Thanks…I was trying to pry off the cap. Glad it didn’t come off.