400four choke

[yorky10]

can any one tell me where I can get a good exploded picture of fourhundred 4 carbs.please.my book picture,haynes and the American one are oiled up .sad is not.if its not running after this its for sale.yorky.

[mickwinf]

Try the CMSL site as they have exploded diagrams of everything. I have been where you are, frustrated with a bike that won't play ball, but keep trying and with help from this forum you will get there! Is there any members nearby who could take a look, two heads are better than one! Also everything else has to be spot on, valve/ignition plugs etc. Good luck!! Mick

[sweetpeauk]

http://images.cmsnl.com/img/partslists/honda-cb400f2-england-engine-group-1j-1k-2j-2k_bigma000081e01-4_3e89.gif

[Dan]

Only running when on choke definitely sounds like blocked jets. I also had carb issues (bike wouldn't rev past 6000). I know this will be frowned upon by some people but as well as using carb cleaner I ran a thin wire through the emulsion tubes with them out the carbs - down the length of them and through the holes drilled across them. If you use a soft wire, copper for example, rather than something coarse like untwisted brake cable there shouldn't be a problem. It worked for me...

[mickwinf]

Did you remove the emulsion tubes to clean them?

[Dan]

Yes, and the jets. They just unscrew and you can put a good squirt of carb cleaner into the internal drillings of the carbs while they are out.

[ewanhughes]

Hi Yorky, have you seen the document that Tim Boughen has produced?  It's basically a complete run through of the process of disassembling, cleaning and replacing 400/4 carbs.  It's mainly done with pictures and I can honesty say I wouldn't have had the confidence to tear my carbs apart if I hadn't seen it first.  I really is that good!  See link below.

http://www.docstoc.com/docs/97200467/CARB-REBUILD-101

All the best and god luck.

Kenny

[mattsz]

Old thread, I know... I've seen many references to Mr. Boughen's document, but it seems to have disappeared from the net.  Does anyone have a source?  Or, does anyone have a copy available?

[paul G]

Old thread, I know... I've seen many references to Mr. Boughen's document, but it seems to have disappeared from the net.  Does anyone have a source?  Or, does anyone have a copy available?

I have it but it's too large to attach.
Pm me your email address and I will send it to you.

[mattsz]

Old thread, I know... I've seen many references to Mr. Boughen's document, but it seems to have disappeared from the net.  Does anyone have a source?  Or, does anyone have a copy available?

I have it but it's too large to attach.
Pm me your email address and I will send it to you.

PM sent, thanks!

[paul G]

Old thread, I know... I've seen many references to Mr. Boughen's document, but it seems to have disappeared from the net.  Does anyone have a source?  Or, does anyone have a copy available?

I have it but it's too large to attach.
Pm me your email address and I will send it to you.

PM sent, thanks!

Done

[paul G]

Done Andy

Anyone else 

[Andych]

Perfect.. many thanks

[mattsz]

Old thread, I know... I've seen many references to Mr. Boughen's document, but it seems to have disappeared from the net.  Does anyone have a source?  Or, does anyone have a copy available?

I have it but it's too large to attach.
Pm me your email address and I will send it to you.

The US sohc forum has larger size limits, I was able to post it there...

http://forums.sohc4.net/index.php/topic,152810.msg2045081.html#msg2045081