1997 2 Stroke 150 (S150TXRV) Power Head Passages Description/Function

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boatmon345

Petty Officer 2nd Class
Joined
Apr 26, 2006
Messages
113
I have been trying to diagnose a cooling problem with my 1997 2 stroke 150 (S150TXRV), and it would greatly help me if I could understand exactly the function of each of the following passages on my powerhead and its mating surface (pictures to be attached):
 
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boatmon345

Petty Officer 2nd Class
Joined
Apr 26, 2006
Messages
113
TopOfPowerHeadMatingSurface_Numbered.JPG


UndersideOfPowerhead_Numbered.JPG
 
B

boatmon345

Petty Officer 2nd Class
Joined
Apr 26, 2006
Messages
113
Passage 1=?
Passage 2=?
Passage 3=?
Passage 4=?
Passage 5=Starboard Exhaust
Passage 6=Port Exhaust
Passage 7=?
 
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