storing outboard

Submitted: Monday, Jan 30, 2006 at 22:09
ThreadID: 30270 Views:2597 Replies:11 FollowUps:0
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would like some advice on storing my out board mercury 9.9( older model don t know year)running out of places to mount it on camper upright ,has been suggested that it can be stored on its flat which contradicts everything i been told.
If it can be stored in horizontal it would go along way to solving my storage probelms. and if so is there aright or wrong way?
Cause if it has to be upright might have to leave the missus or one of the kids behind. your thoughts would be appreciated
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Reply By: Member - John C (WA) - Monday, Jan 30, 2006 at 22:15

Monday, Jan 30, 2006 at 22:15
Provided you run it out of fuel, I don't think there would be an issue. The oil in the leg gearbox should not be a concern.
AnswerID: 151957

Reply By: Member - George (WA) - Monday, Jan 30, 2006 at 22:46

Monday, Jan 30, 2006 at 22:46
I have always stored my 15hp merc laying down, never had a problem
AnswerID: 151968

Reply By: Alan (WA) - Tuesday, Jan 31, 2006 at 00:42

Tuesday, Jan 31, 2006 at 00:42
I have mine lying down in box in CT - 18hp Tohatsu. No problems so far. When I was looking for outboards and explained how I intended to use and store it, I was advised that ok with 2 stroke motors but not to try with 4stroke as not as robust or forgiving for what I intended.

AnswerID: 151992

Reply By: V8 Troopie - Tuesday, Jan 31, 2006 at 02:20

Tuesday, Jan 31, 2006 at 02:20
The thing with two stroke outboards is that a little of the cooling water can remain in the legs exhaust passage. If the motor is stored with the head lower than the prop then there is a possibility of that water running back into the cylinder via the exhaust port.
I store mine ('96 merc 9.9) on its back, with the prop facing down. That way it takes the smallest footprint (other than being upright) but it must be restrained or it will fall over if its kept in a vehicle.
AnswerID: 151999

Reply By: Member - Willie , Epping .Syd. - Tuesday, Jan 31, 2006 at 06:33

Tuesday, Jan 31, 2006 at 06:33
Tony ,
There is a right way and a wrong way to lay them on their side . Last time I was at the Merc. servicing place he told me which was the right way , but the oldtimers has set in and I have forgotten - go to a dealer and ask the mechanic because one of the ways is a real no no .
Most people in campers have a bracket that lets them clamp the motor on like it would be when it is swung up on the transom of the boat . This would be best for the internals and stops it moving around .
AnswerID: 152003

Reply By: Sand Man (SA) - Tuesday, Jan 31, 2006 at 08:14

Tuesday, Jan 31, 2006 at 08:14

There should be a decal on your outboard indicating the correct way to lay it down.
The motor should be layed on its side, with the control handle underneath.

Having said that, I mount mine on a bracket welded to the rear tailgate, next to the spare tyre. Keeps it upright, the same as if it was mounted on the boat.

This is no worse than if I was towing the boat with the motor already mounted.


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AnswerID: 152007

Reply By: Member - Beatit (QLD) - Tuesday, Jan 31, 2006 at 08:59

Tuesday, Jan 31, 2006 at 08:59
G'day Tony,

I mount mine inside the tinnie on its side and this has not been a problem. As previously mentioned it is important to make sure that the engine is dry. I found that this is not hard really as the boat and motor would never get loaded so quickly after use. Also the tropical heat soon got rid of any moisture. The issue is that in 2 strokes this water can find its way into the combustion chamber and we all know this is no good.

Always made it a point to get the motor vertical as soon as practical and give it a start.

Kind regards
AnswerID: 152013

Reply By: Toby T - Tuesday, Jan 31, 2006 at 13:05

Tuesday, Jan 31, 2006 at 13:05

Yes check with a Merc service dealer, but lying down is far more secure for offroad as you will get far less whip when going over humps and bumps. I cannot remember whether prop facing up or down.


AnswerID: 152055

Reply By: friar - Tuesday, Jan 31, 2006 at 18:30

Tuesday, Jan 31, 2006 at 18:30
Tony W, I have had my 15 hp mercury 2stroke since 2000 with a trip every year up territory or the cape,always carried it in a half box,with the prop facing down,never had a problem with it,the motor end sits in the box with foam glued to sides of box,still looks like new.
AnswerID: 152102

Reply By: Member - Tony W (VIC) - Tuesday, Jan 31, 2006 at 20:05

Tuesday, Jan 31, 2006 at 20:05
thanks for all your worldy advice,seems its alright to go on its side prop done
but will check with dealer to double check .thanks to all who contributed.
AnswerID: 152112

Reply By: deano8it - Wednesday, Feb 01, 2006 at 02:58

Wednesday, Feb 01, 2006 at 02:58
Hi tony, I flipped a trailer in NT last year 3 times and the outbourd was on its side at the front of the trailer. It was fine and it still going fine. I got a big piece of foam and cut out the shape of the out bourd. This stopped it from inpact. Deano
AnswerID: 152214

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