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  #1  
Old 07-02-2013, 10:09 PM
Stevfine Stevfine is offline
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Join Date: Jul 2013
Boat: Mastercraft stars n stripes 1978 351w
Location: Sierra foothills
Posts: 1
'78 master craft neutral sensor

I have replaced everything between the ignition switch and the starter.. solenoid, you name it, everything checks out good. But I still have nothing when I turn on the key...lights and blower work, but not even a click.
The only thing I have left to change out is the sensor on the tranny that must engage and disengage when starting...I'm guessing!? Like a safety?
Anyone have any info on the little gizmo.
There are two wires attached to a nut...which attaches to a three bolt housing ( small) on the exterior of the transmission itself. The nut separates the wire housing...I guess what I need to know, should all of this be replaced...or just the electrical housing?
One day it fired..the next day nothing..
Any help would be much appreciated.
Thanks!
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  #2  
Old 07-03-2013, 12:33 AM
Bluccous's Avatar
Bluccous Bluccous is offline
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Join Date: Jul 2012
Boat: 1985 stars and stripes
Location: East Texas/Louisiana Line
Posts: 64
Not sure if this will work but u may connect the to wires together and see if it will start. I think it may b like the safety kill switch. I know that will work on it mine is by passed know due to a faulty switch.
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  #3  
Old 07-03-2013, 12:46 AM
thatsmrmastercraft's Avatar
thatsmrmastercraft thatsmrmastercraft is offline
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Join Date: Sep 2008
Boat: 1977 Stars & Stripes
Location: St. Paul, MN
Posts: 15,164
It is a neutral safety switch designed so that you can't start it in gear. You can test it with an ohmmeter if the power is off, or with a voltmeter with the power on. You are just looking for continuity. You may find you need to disassemble the throttle assembly and clean it out. My '77 was having a tough time getting the throttle just right and when I opened up the throttle housing, I found original grease which was almost petrified and half a beach worth of sand.
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