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  #1  
Old 04-29-2014, 10:36 AM
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epnault epnault is offline
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Draining Water on a 1990 ProStar 190

My brother-inlaw just entered the MasterCraft boating world a couple weeks ago. He picked up a 1990 with a 351 and had it shipped from AZ to his home in Spearfish,SD. Well he called and said the weather is getting bad over there and he wanted to drain his block. He said he could find the plug on the observer side but not on the driver side. Can you guys help me/him out with all the points to drain and where they are on this engine?
Thanks,
Eric
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  #2  
Old 04-29-2014, 01:00 PM
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JMann JMann is offline
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There is a drain on the back of each exhaust manifold and a peacock value on the sides. The Observer side is towards the back and the driver side is towards the front below the spark plug.
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Old 04-29-2014, 01:10 PM
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Dynamite Spike Dynamite Spike is offline
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On the driver's side, the drain plug is the knock sensor. Just remove it to drain.
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Old 04-29-2014, 01:31 PM
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epnault epnault is offline
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Thanks guys
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  #5  
Old 04-29-2014, 09:32 PM
roadster02 roadster02 is offline
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Correct!


Quote:
Originally Posted by JMann View Post
There is a drain on the back of each exhaust manifold and a peacock value on the sides. The Observer side is towards the back and the driver side is towards the front below the spark plug.
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  #6  
Old 04-29-2014, 09:32 PM
roadster02 roadster02 is offline
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Not correct on a 1990

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Originally Posted by Dynamite Spike View Post
On the driver's side, the drain plug is the knock sensor. Just remove it to drain.
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  #7  
Old 04-29-2014, 10:15 PM
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Dynamite Spike Dynamite Spike is offline
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Quote:
Originally Posted by roadster02 View Post
Not correct on a 1990

I stand corrected...assumed it would be the same as my '96
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  #8  
Old 04-29-2014, 10:20 PM
Black Hills MC Black Hills MC is offline
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Hello-
First post! Thanks for your responses. I am the brother in law. Got the plugs out and raw water strainer drained in the snow! Gonna sleep good tonight!
Thanks again!! Great forum!!! Sick of winter!!
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  #9  
Old 04-29-2014, 10:35 PM
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Miss Rita Miss Rita is offline
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Hey BH, I sent you a PM.
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  #10  
Old 04-29-2014, 11:17 PM
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Sydney Skier Sydney Skier is offline
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welcome to the family post some photos of the new to you ride
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