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Yanmah NTS 70-R

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leigh
New member
Username: leigh

Post Number: 1
Registered: 04-2010
Posted on Saturday, May 01, 2010 - 12:39 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi,
Can any one help me out with a Manual or copy for this moter.Also the makings of a fuel pump to adapt or any imfo on the original pump.Are they 7hp or 4hp.This moter was built in 1964
Cheers Leigh
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hookedup
New member
Username: hookedup

Post Number: 3
Registered: 02-2010
Posted on Saturday, May 01, 2010 - 05:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi Leigh,

Your engine is rated at 3.5 hp.

If you need a workshop manual or owners manual contact the people here. http://www.minardsdiesel.com/

They are very helpful. I have a copy of both booklets.
They are only photo copies, but do the job.

Nice engine you have there.

Paul.
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leigh
New member
Username: leigh

Post Number: 2
Registered: 04-2010
Posted on Saturday, May 01, 2010 - 09:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Thanks Paul.Good news about 3.5hp as when going will be fitted into a 15ft restored motor boat and i,m in Tasmania and any boat powered with 4hp plus requires regostration and a licence to operate
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hookedup
Member
Username: hookedup

Post Number: 4
Registered: 02-2010
Posted on Sunday, May 02, 2010 - 05:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi Leigh,

I am in Tas too.

On the Tasdman Peninsula, at Nubeena.

Paul
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hookedup
Member
Username: hookedup

Post Number: 5
Registered: 02-2010
Posted on Sunday, May 02, 2010 - 06:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

That should read.
Tasman Peninsula.

Leigh, the most important thing with these engines is the prop.
Your manual, when you get one, will give you a recommended prop size.
Stick to that prop. I have never seen any of the NTS series engines run properly with anything other than the recommended prop.

Good luck.

Paul.
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leigh
New member
Username: leigh

Post Number: 3
Registered: 04-2010
Posted on Monday, May 03, 2010 - 06:12 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Thanks Paul,
I have three Yanmah props.One i cut back to suit my 5/7 Blaxland till i got the right one for her.Probly the right one.Iknow one of the others is of a YSE-8.Any way Paul i have sent Minnards a E Mail.Your in a good spot .A lovely old cray boat down there called the Warrane.
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hookedup
Member
Username: hookedup

Post Number: 6
Registered: 02-2010
Posted on Monday, May 03, 2010 - 05:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi Leigh,
yes I know that boat and have known it's owner most of my life.

Minnards are good to deal with, you should have no problems.

I think the YSE-8, rotation is opposite to the NTS, ????? . Not sure.

Paul.
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leigh
Member
Username: leigh

Post Number: 4
Registered: 04-2010
Posted on Monday, May 10, 2010 - 05:19 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi Paul,
Have got the fuel pump working.There was brass factory fitted shims between pump housing and block. four of,removed one at a time till got a squirt of diesil on rotation off the cam.Is cracking really well at the injector but will only give a half hearted fire.Been cranking my ring out till i nearly dry reach ,ha ha but she want go ,plenty of compression.Don,t want to pull the head off till i know if i can get a gasket from Minnards,.Would she only spray enough fuel that is needed and any excess return .if i,ve taken one shim to many out.I,m probly a bit keen to get her going Paul as i have,nt even got the new stem or replaced the planks on the boat yet,she,s still sitting under the trees,,,,,,,,,,,
Cheers Leigh
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hookedup
Member
Username: hookedup

Post Number: 9
Registered: 02-2010
Posted on Monday, May 10, 2010 - 06:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

You may possibly need to get the injector serviced.
Any injector service centre should be able to do that for you.
I would be reluctant to remove the shims till, you knew their purpose.
A call to Minnards at this stage might help you.

Paul.
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leigh
Member
Username: leigh

Post Number: 5
Registered: 04-2010
Posted on Monday, May 10, 2010 - 06:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Got a good spray patern at injector nozzle i have a antiquated pump tester.obviously the shims are a unique way of pump calibration .. Minards ar,nt being very helpfull.No sale of manual or copies.. Have sent another email through a differant department..Could you look up the valve clearances in yours and head tension please.i,ll whip it of at the weekend and check the seats and aneal some sheet copper and make a head gasket.
Cheers leigh
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hookedup
Member
Username: hookedup

Post Number: 10
Registered: 02-2010
Posted on Monday, May 10, 2010 - 10:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi Leigh,
Head tension is given as 12.4 m-kg.
Great attention is given in the instruction about tightening the bolts evenly.

Valve clearance is given between .2 - .3 mm.
With valves closed.

Hope this helps.

Paul.
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todd_vidgen
Senior Member
Username: todd_vidgen

Post Number: 175
Registered: 03-2008
Posted on Monday, May 10, 2010 - 11:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The shims are for adjusting the injector timing.
Add shims to retard,remove shims to advance
Todd
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leigh
Member
Username: leigh

Post Number: 6
Registered: 04-2010
Posted on Tuesday, May 11, 2010 - 06:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Thanks Paul and Todd,will let you know how things go later on
Regards Leigh

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