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Old 29 March 2014, 09:30   #1
Country: UK - England
Town: Manchester
Boat name: Aint Got A Clue !
Make: Avon
Length: 4m +
Engine: 60 Mariner
Join Date: Jun 2012
Posts: 22
Mariner 60 Wont Start

Hi All,
Unwrapped the SR4 after the winter and it wont start. No spark with the plug held against the casing.
Fitted a new starter solenoid as that was shot and caused me some problems last season.
New battery, plugs & fresh, clean fuel.

I'm handy with a spanner & multimeter but have no clue with regard to diagnosing a faulty stator/coil etc. as I can find no reference to resistance measurements or other values.

Motor is a 1989 Mariner 60 with PTT.

It ran great last year (apart from the temperamental starter solenoid).

If anyone could point me in the right direction with regard to an ignition circuit diagram that would be great. Checked the obvious connections, wire continuity etc.

I did have a search on here in the hope I'd not waste anyone's time but can't find a definitive route forward.


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Old 29 March 2014, 10:33   #2
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Jizm's Avatar
Country: UK - England
Town: Southampton
Boat name: Hissing Sid
Make: Ross Smith Cobra
Length: 6m +
Engine: 200HP Optimax
MMSI: 235038046
Join Date: Jun 2002
Posts: 3,803
First thing to check is kill cord. Some engines it just cuts the spark but it will still turn over.
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Old 02 April 2014, 08:06   #3
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,539
If it's a clamshell vintage I can confirm what Jism says.

I assume all plugs not sparking?

Also if it;s clamshell vintage there is a mercury switch, the idea of which is to stop you running it with the cooling intake out the water. If you are a "off vertical" that may also be acting i.l.o the deadman? - disconnect & see if it goes (I think mine is on it's way out & removed it at the end of last season - not had it out yet to see if things are improved)

Overheat switches of that vintage were basically thermally activated deadman switches. If it has one - disconnect it & see what happens.
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