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small drain screw on engine case

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Old Mar 20, 2010 | 08:41 PM
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Default small drain screw on engine case
My friend hsa an 04 ultra and thought he was taking out the tranny drain plug and mistakenly unscrewed a small alan head screw on the bottom of the engine case on the right side of the case. about a half cup of what looked like engine oil drained out. What the heck was that ??
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Old Mar 20, 2010 | 08:46 PM
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Which one did he pull?
 
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Old Mar 20, 2010 | 09:03 PM
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the one you labeled "primary, 1 of 2. so when you drain the primary with the drain plug on the primary case you do not nee to touch the other one. what is it there for?
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Old Mar 20, 2010 | 09:18 PM
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This is his primary drain plug. I honestly don't know why the other is there or what it is there for.
 
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Old Mar 20, 2010 | 10:16 PM
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Originally Posted by soos
Which one did he pull?
LMAO..Soos i new that was coming!!!!!!
 
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Old Mar 20, 2010 | 10:45 PM
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Originally Posted by riteway
LMAO..Soos i new that was coming!!!!!!
I was waitin' on you rw but you took too long. Another play date with the ol' lady?
 
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Old Mar 20, 2010 | 10:51 PM
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Originally Posted by soos
I was waitin' on you rw but you took too long. Another play date with the ol' lady?
Yep.you caught me..Never enough play dates!!!! XOXOXO....;-)... ..
 
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Old Mar 21, 2010 | 11:52 AM
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Originally Posted by tom lipke
My friend hsa an 04 ultra and thought he was taking out the tranny drain plug and mistakenly unscrewed a small alan head screw on the bottom of the engine case on the right side of the case. about a half cup of what looked like engine oil drained out. What the heck was that ??
Thanks
I believe that was where they plum in the engine temp gauge.
 
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Old Mar 21, 2010 | 01:22 PM
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It's the drain plug for the crankcase. You pull it to check for sumping. 1/2 cup oil is good. The one to use for your oil temp gauge is the one marked "crank" in soos's picture.
 
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Old Nov 26, 2022 | 04:44 PM
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Originally Posted by tom lipke
My friend hsa an 04 ultra and thought he was taking out the tranny drain plug and mistakenly unscrewed a small alan head screw on the bottom of the engine case on the right side of the case. about a half cup of what looked like engine oil drained out. What the heck was that ??
Thanks
did you ever find out

Watt those bolts where. I did the same thing but I can’t unscrew mine I’m thinking it’s for the oil son that sits there in the bottom of the crank case. Maybe you could drain it out that way
 
Last edited by Ddjjss; Nov 26, 2022 at 04:45 PM.
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