Running in a new outboard

Mickhitchuk · 11 August 2015, 08:14

Hi all
I want to run in my new outboard in a tank in the back garden, seems you need to put in twice the amount of oil for 10 hours run time, will this be ok or do I need to do it on the boat
Regards
Mick

uncle al · 11 August 2015, 08:20

you must keep the water cold, but look in the owners handbook, full instruction used to be in it.

Mickhitchuk · 11 August 2015, 08:34

Thanks for the temp tip, the hand book does not really say on or off the boat, the main difference I suppose will be that the motor will not be under load as it will be in a tank in neutral

Searider · 11 August 2015, 09:19

I don't think that running it in in a tank is a good idea. As you have said it won't be under any appreciable load. It needs the load to allow the rings to be properly loaded up and form a seal with the bores.

Is it a new 2 stroke - you refer to more oil?

If it were me - i'd just get out there and use it. Gently for the first couple of hours. Vary the speed. No full throttle for a while. It's all in the handbook.

Maximus · 11 August 2015, 09:21

Quote:

Originally Posted by Searider

I don't think that running it in in a tank is a good idea. As you have said it won't be under any appreciable load. It needs the load to allow the rings to be properly loaded up and form a seal with the bores.

Is it a new 2 stroke - you refer to more oil?

If it were me - i'd just get out there and use it. Gently for the first couple of hours. Vary the speed. No full throttle for a while. It's all in the handbook.

Yep..As per Handbook,I wouldn't compromise on that one

BogMonster · 11 August 2015, 09:28

I would suggest that will be very bad for the motor to run it in like this. Running in engines should be done under normal (but not excessive) load, so that everything beds in properly. I know that running in a vehicle engine in this way would do it long term harm, and I can't imagine outboards are any different. I was once told that the rings etc would not bed in, bores would be glazed etc. Same with idling engines for long periods, especially when they are cold.

Pikey Dave · 11 August 2015, 10:29

Nor will you be bedding the gearbox in, it's not just the engine.

Mickhitchuk · 11 August 2015, 13:26

Sounds like a couple of steady cruises down the river and get it done right
Thanks for all your help

Fenlander · 11 August 2015, 14:48

Is this a craftily acquired Tohatsu 9.8?

Agree with all above you can't run an engine in using a tank at home. Assuming I'm right re engine type I bought one a few years back that looked so new I wasn't sure if it had been run for ten hours so to be sure went through the break in procedure.

If you read the manual after just 1hr you can go up to 3/4 throttle with 10% of the time at full throttle. So in truth that's pretty much a typical trip out with a SIB on the sea.

Running at a steady low speed on the river won't run it in fully and at near tickover speed the first 10hrs on 25:1 risks oiling up a bit.

Mickhitchuk · 11 August 2015, 15:06

It is

, no way am I paying £1000 plus for second hand, when new I can get for £1500, it's my first new outboard

Fenlander · 11 August 2015, 15:15

Well... just run in and used.... or brand new... they are a brilliant motor. Running in advice stands... it needs some sensible exercise during running in!

uncle al · 11 August 2015, 18:23

Dont try to run it in in neutral you could cause a lot of damage! It has to be run in, in fwd gear only.

paintman · 11 August 2015, 19:51

Quote:

Originally Posted by Mickhitchuk

It is

, no way am I paying £1000 plus for second hand, when new I can get for £1500, it's my first new outboard

Follow the instructions in the manual. Simply not worth doing anything else.
Sort out a weekend to do it & go & have fun

Searider · 11 August 2015, 20:34

Bought a new Seagull in the 1980s.
The running in instructions were to not go below 3/4 throttle for the first few hours!

Mickhitchuk · 12 August 2015, 06:29

Thanks for the help all, ferlander , I've heard you can change the carbs on these and make a 15hp, have you tried this ?

Mickhitchuk · 12 August 2015, 06:30

Ops typo fenlander

Fenlander · 12 August 2015, 09:10

No that doesn't work... well assuming you have bought the model in my image. That 9.8hp (the light 26kg model) was an already maxed out version of the 6/8hp models.

They made a 9.9hp that was much heavier at 41kg with a much larger engine capacity... and this was the same as the 15hp in all but carb/tuning respects.... apart from the engine capacity it shared much of its construction with the 18hp too.

Mickhitchuk · 12 August 2015, 10:34

Ah yes, I've seen that badged as a 9.9, it's the same as yours, and it will do for me

lightning · 19 August 2015, 08:00

I have one of these engines, bought some time ago. The dealer is still offering the engines new for sale to the UK.

I basically ran it in by using it normally. The book says the first hour should be slow, but after that use it normally but vary the speed as mentioned above.

Just don't run it flat out continuously! And yes the oil mix is 25/1 during running in, so it does smoke a bit.

Mickhitchuk · 19 August 2015, 15:58

Thanks for your help