carb strip down

[reggit]

Hi all,

I have a newly acquired FJ1200 (see thread in intro section)which has been out of use for 2-3 years.  In-fact it's covered a whopping 60 miles since 2009!

I can get it to cough on a couple of cylinders (have spark on all) but no more.  Chances are the carbs are gunked up with stale fuel.
I'll be popping them off and giving them and the jets a good going over.

My question is.....  Are there any bits in the FJ carbs that are a weak point and would be a good idea to change whilst it's in bits?

Ta.

[Dan Filetti]

Check the Files section.  There are extensive instructions there.  In those instructions you will find things like; check you needle seat o-rings.  Also, you may want to contact Randy at RPM for the carb SS Allen key screws and O-Ring kit, makes carb work much easier.

Dan

[dougrs]

Check the Files section.  There are extensive instructions there.  In those instructions you will find things like; check you needle seat o-rings.  Also, you may want to contact Randy at RPM for the carb SS Allen key screws and O-Ring kit, makes carb work much easier.

Dan

I just did my carbs and the new screws from RPM are a must in my opinion. And the instructions in the files section were great.

[movenon]

These are 2 good links to read and re read. Lots of pictures 
http://www.fjowners.com/index.php?topic=7730.0
http://www.fjowners.com/index.php?topic=4281.0

I would encourage you to go through the carbs slowly and completely. I mean pull every thing out, all the jets, emulsion tubes etc. and spend a bit of time cleaning them. Cleaner and compressed air at a minimum. Read and re read the "Files" section pertaining to carbs. Do a search on carbs, lots of information in various postings. Inspect every thing. Might help to do just one carb at a time if you have never done them before.  Be very careful taking out the float pins. Do not beat or pound on the pins unduly or unsupported. You do not want to break a casting...... Take your time.  

It might help reassembly if you take a few photo's before you full them out and apart for reference. Hoses and fittings etc..

If you have a concern or problem during the rebuild then stop there, and get back on here to ask questions.

They are not hard to do if you take your time and understand that its all those small holes and passage's that need the most attention.  I also would recommend getting a complete kit from Randy at RPM. New jets, emulsion tubes, needles, check valves/needles and seats, gaskets and O rings. The hex head SS screws are a nice upgrade to use when reassembling. Also recommend replacing the large O rings that go between the little manifolds and the engine while the carbs are off. Cheap insurance... Do not over TQ the manifolds....

A handy tool in removing those pesky Phillip's head screws is a small vise grip pliers to grab the screw edges to get them loose. They are buggers at times.

Sorry about the long post..
George

[yamaha fj rider]

You may want to contact Randy at RPM for the carb SS Allen key screws and O-Ring kit, makes carb work much easier.

Dan

+1 Stainless allen head screw and o-ring kit. Save a lot of time and headache for a small amount of money.

Kurt

[reggit]

You may want to contact Randy at RPM for the carb SS Allen key screws and O-Ring kit, makes carb work much easier.

Dan

+1 Stainless allen head screw and o-ring kit. Save a lot of time and headache for a small amount of money.

Kurt

Thanks for the advice - I'm not new to pulling carbs apart, just not done any for a while.

I'll look for a similar supplier to the parts mentioned on this side of the pond (I'm in UK) as postage from the states will probably make it expensive.

[reggit]

Oops, I feel a bit embarrassed and decided to 'fess up

Tried the battery off my CB on the FJ as it wasn't turning over very quickly, and it fired straight up with some fresh petrol in.

Looks like the old one couldn't provide a spark under compression most of the time.

At least it runs, and sounds well

[fj11.5]

Don't worry mate,you wouldn't be the first to have a dud battery,  another tool that helps take carb screws out is one of the three pronged screwdrivers this type of shape.   Y  usually have three phillips head sizes that fit screws made of cheese really well