Manual Needed for NC31 Super 4

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Alan Williams
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Manual Needed for NC31 Super 4

Post by Alan Williams »

Hi There

Have just joined forum having recently acquired a Super 4 1992 (NC31), very nice bike I must say.

If anyone has any basic servicing /maintenance info for this bike they could copy to me I would be eternally grateful.

I seeem to have acquired a leaking LHS rear supension unit and none of the breakers seem to have any.

I know nothing about this model not even how to take the tank off so anything would be gratefully received.

Thanks in advance for any help and best wishes to all forum members
chmod-uk
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Bike owned: cb400sfr
Re: Manual Needed for NC31 Super 4

Post by chmod-uk »

Hi welcome to the forums. The only manual that exists is a Japanese and Russian one. I have the Russian workshop manual that i sort of had a go at converting to english myself, if you want that let me know.

Hard to find oem replacement shocks, Hagon do them but they're not as nice looking.

Tank is easy, just two bolts under the seat at the front of the tank. Fuel and vacuum pipe pull off easily and there's also two breather pipes underneath the tank near those two bolts.
Image
1. Vacuum pipe 4. Fuel 2,3. Breather pipes.
Alan Williams
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Re: Manual Needed for NC31 Super 4

Post by Alan Williams »

Thank you so much for your help. Very kind of you and very helpful. I want to have a look at the colour of the plugs and to check the air filter so I've got to the starting gate now. Thanks again.
I contacted David Silver and they have sold me a single shocker ( my LHS shcoker is leaking oil) which they say won't fit but I can swap the middle bit and sort the problem taht way. Hope it works , I'll have a look when it arrives probably have to see a mechanic with it. Do you happpen to know if shockers can have parts swapped at all ? He (at Silver's) said it would need the spring compressing .

Thanks again for your help and also for the welcome . Aren't these forums marvellous things.
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Mansie
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Bike owned: CB400 Four NC36, NT650V
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Re: Manual Needed for NC31 Super 4

Post by Mansie »

On the old forum there was a thread about refurbishing old shocks. I believe there was a company that does the job for £160 / pair. I went to Hagon and bought a pair of chrome shocks for ~£120. If you bring the old shocks they will adjust the springload for the new one. I wouldn't buy just one shock if you need a pair.
If you want you can have my old Showa shocks. They're for the NC36 but should fit the NC31 too. I replaced them for aestetic reasons, they're still OK.
chmod-uk
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Bike owned: cb400sfr
Re: Manual Needed for NC31 Super 4

Post by chmod-uk »

Alan Williams wrote:Thank you so much for your help. Very kind of you and very helpful. I want to have a look at the colour of the plugs and to check the air filter so I've got to the starting gate now. Thanks again.
I contacted David Silver and they have sold me a single shocker ( my LHS shcoker is leaking oil) which they say won't fit but I can swap the middle bit and sort the problem taht way. Hope it works , I'll have a look when it arrives probably have to see a mechanic with it. Do you happpen to know if shockers can have parts swapped at all ? He (at Silver's) said it would need the spring compressing .

Thanks again for your help and also for the welcome . Aren't these forums marvellous things.
Yes you can buy the shock parts seperately from honda. I have the part numbers if you want them, infact i have the complete bike part numbers thanks to one of the forum members here.
alexibrow
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Location: Brighton & Hove
Re: Manual Needed for NC31 Super 4

Post by alexibrow »

DPS Racing recondition shocks, as do All Bike Engineering.

DPS:
http://stores.ebay.co.uk/dpsracingltd_W ... esstQQtZkm

ABE:
http://www.allbikeengineering.co.uk/
Alan Williams
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Re: Manual Needed for NC31 Super 4

Post by Alan Williams »

Many thanks to all of you for all your help, extremely helpful.

The shocker arrived today and it looks almost exactlty the sme as the original . I rang Silver's to find out what I was supposed to swap and the bloke there advised that it was the damper unit which looks to me to be virtually evertyhing bar the spring. Apparently most of the part ref. number is the same but the last couple of digits are differnt presumably suggesting soem minor modification.

Anyway I took it to an experienced mechanic ( also used to race bikes) to get his advice and he checked the length and found it t o be the same and advised it would be OK to swap the unit as it came so that's what he did. It all seems to fit the same and it does look the same so hopefully it shouldn't cause a problem although something must be different - damping rate or spring reistance I wonder ?? (The spring looks the same diameter etc) The rubber buffer on the new one at the very bottom of the damper is definitely a different shape. I don't really ride my bikes hard at all so the bike isn't really "tested " if you know what I mean. As long as it doesn't cause any damage (I wondered if it could distort the swinging arm but proabaly not eh ??)I don't mind.

If anyone's got any comments or gypsy's warnings I'd be interested to hear them !! It's a bit technical ain't it !!

Meanwhile thanks again to all of you for all your kind offers and constructive suggestions. Very good of you.

Best Wishes

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