Marine starter automoitve solenoid

Ike-110722

Chief Petty Officer
Joined
Sep 3, 2007
Messages
408
Re: Marine starter automoitve solenoid

Yes. (And that is coming from the guy who used to enforce the laws on this). Electrical parts on a boat must be ignition protected if they are in a place where gas fumes might accumulate. The engine compartment is one. Ignition protected means it will not create a spark that could ignite gas fumes. A solenoid is inherently ignition protected. It is simply a large coil of wire that when energized creates a very strong magnetic field, that moves the shaft (or piston) in the solenoid, and causes the gear on the starter shaft to engage the teeth on the flywheel. There are no parts in a solenoid that can create a spark. Some solenoids have a relay that trips first and activates the solenoid and that can create a spark, so the relay must be sealed so it won't ignite vapors. So be cautious. If in doubt, pay the extra bucks and buy one that is a marine part.

That said, the bolt on the solenoid where the positive wire connects must be covered with a rubber boot or other shield. This is to prevent accidental contact by metal tools that may be also in contact with other grounded metal parts and causing a huge spark.

Sothe answer is yes, but.....
 
Joined
Feb 17, 2012
Messages
2,906
Re: Marine starter automoitve solenoid

we are talking inboard motors?

"There are no parts in a solenoid that can create a spark" not being a arse but the shaft in the solinoid is connect one end to a lever that engages the gear as you pointed out but the other end is a copper disk thats slapped against 2 copper terminals with over 600amp available. So it has to be sealed for marine use.

pre-solinoids are the same thing and have to be sealed also (never seen a unsealed one but why chance it)
 

Tail_Gunner

Admiral
Joined
Jan 13, 2006
Messages
6,237
Re: Marine starter automoitve solenoid

Yes little 4.3 starter. It will no longer turn the engine but a slight tap on the solenoid and it breaks loose a bit so i am assuming it a bad solenoid. Or i am hydro locked....:eek:
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,079
Re: Marine starter automoitve solenoid

Yes little 4.3 starter. It will no longer turn the engine but a slight tap on the solenoid and it breaks loose a bit so i am assuming it a bad solenoid. Or i am hydro locked....:eek:

Ayuh,... There's no differences in the starter mounted solenoids,...

The Marine starters have a little steel plate, 'tween the brushes/ windin's, 'n the bendix...
'n that includes the permanent magnet motor starters...

The Gear drive starters are marine by design...
 

dan t.

Lieutenant Junior Grade
Joined
Feb 28, 2008
Messages
1,137
Re: Marine starter automoitve solenoid

On the small permanent magnet starters the solenoid is identical marine and automotive, it is sealed so sparking is not an issue, the big difference is the price ,over $100. for marine, about $35. for automotive.
 
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