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Old 07-02-2013, 09:09 PM
Stevfine Stevfine is offline
TT Newbie
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.
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Old 07-02-2013, 11:33 PM
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Bluccous Bluccous is offline
TT Regular
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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Old 07-02-2013, 11:46 PM
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thatsmrmastercraft thatsmrmastercraft is online now
MC Master Poster
Join Date: Sep 2008
Boat: 1977 Stars & Stripes
Location: St. Paul, MN
Posts: 16,824
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.

Two Chrome 10 hole wheels with Kenda Loadstar radials.
Mounted, balanced & delivered.
With ST205/75R14..........$309
With ST215/75R14..........$346

CARBURETOR REBUILDING - $199 Parts, labor & return shipping included
Holley Marine 4160 Freshly Rebuilt $349 - Delivered (no core charge)


Originally Posted by Bouyhead View Post
Installed my carb that was rebuilt by thatsmrmastsercraft, Thanks Peter!! Hot or cold this boat starts and runs like it fuel injected.
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