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I have owned this 1984 FXEF for a very long time. When I first bought it years ago, the Harley Dealer said to check the engine oil with the bike on the jiffy stand. I came across a 1984 Harley FX/FL Owner's Manual last week and it clearly says to check the oil with the bike as straight up as possible and as level as possible. I have been running at least a half quart low for all these years, unless the Owner's Manual is wrong??? What say the masses? At least I am in the mountains of north-central Pennsylvania where it never gets too hot.
I always check on the jiffy stand for my '81 FXB. Straight up would have the oil above the tank plug if I filed to the line on the dipstick straight up. My '13 Limited has both fill levels marked, straight up and on jiffy stand. I used to have an '89 FXR 5 speed that I believe had the same tank you have behind a plastic side cover. I always checked it on the jiffy stand too. Last time I saw it it had over 70k miles on it.
There have been some pretty gross errors in the owners manuals when it comes to lube levels...
My `89 Softail says to fill the primary (bike straight up) to the bottom of the derby cover opening, which would be absurdly overfilled.
That same owners manual says to fill the oil tank (bike straight up) until the oil touches the rubber plug on the dipstick (this would mean filling the tank all the way up into the filler neck).
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