help please motor wont turn ovwe

charlie1975

Seaman Apprentice
Joined
Jul 18, 2010
Messages
33
my 1975 85 h.p mercury will not turn over by the ignition key.I just jumped the solenoid and it turns over.Am i correct in assuming this would be a bad solenoid..thanks charie
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: help please motor wont turn ovwe

Please be more exact in how you "jumped" the solenoid, charlie. Could be the solenoid, but let's eliminate things that can be fixed free first.
 

charlie1975

Seaman Apprentice
Joined
Jul 18, 2010
Messages
33
Re: help please motor wont turn ovwe

used screw driver on top of solenoid to touch prongs together and then it turns over
 

charlie1975

Seaman Apprentice
Joined
Jul 18, 2010
Messages
33
Re: help please motor wont turn ovwe

to be exact there are 4 prongs total...1 large in rear and 1 large in front and 1 small on each side.i used a screw driver to connect large in back with small on left hand side and it turns over.i hope this helps..thanks
 

wifisher

Chief Petty Officer
Joined
Mar 9, 2011
Messages
578
Re: help please motor wont turn ovwe

to be exact there are 4 prongs total...1 large in rear and 1 large in front and 1 small on each side.i used a screw driver to connect large in back with small on left hand side and it turns over.i hope this helps..thanks

Sounds like you have a problem with the wiring or ignition switch. The Large terminal in back is connected to the battery, and you jumped it to the s terminal which is what the key would supply voltage to. You bypassed the key and not the solenoid. If you put a test light/voltmeter on the S terminal it shoild read 0V unless the key is turned to Start position, the S terminal should go to 12V
 

charlie1975

Seaman Apprentice
Joined
Jul 18, 2010
Messages
33
Re: help please motor wont turn ovwe

thanks wifisher, i just figured out my problem is in the control box.if i turn the key in neutral i got nothing,but if i move the gear shifter forward a little it starts to turn over.if not for this site i would of ran out and bought a new solenoid,thought for sure that was it thanks again,charlie1975
 

wifisher

Chief Petty Officer
Joined
Mar 9, 2011
Messages
578
Re: help please motor wont turn ovwe

thanks wifisher, i just figured out my problem is in the control box.if i turn the key in neutral i got nothing,but if i move the gear shifter forward a little it starts to turn over.if not for this site i would of ran out and bought a new solenoid,thought for sure that was it thanks again,charlie1975

Probably need to adjust your shift cable a little. Put it in neutral and look at your shift linkage at the motor. Your neutral safety switch is probably not in the correct position.
 
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