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Post Info TOPIC: Carburettor - pictorial guide to stripping and checking a carb


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Carburettor - pictorial guide to stripping and checking a carb
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Firstly, don't forget the advice on taking out the carb here http://www.ttr250.com/Removing_carb/TTR_carb_removal.htm

These are all the tools you will need for a basic strip:
Carb strip 005.jpg

Start off by removing the two screws and taking out the diaphragm and check it isn't damaged. If needing replacement because the rubber part has hardened or torn then the part number is 4GY-14940-00-00 

It makes sense to replace the two little O rings (part number 5Y1-14397-00-00) when re-assembling.

Carb strip 006.jpg

The pic below shows the carb stripped as far as you need to go if just cleaning jets. My advice is NOT to take the float assembly off without very good reason as you risk breaking the support post arrowed in red. The retaining pin is usually very tight no

Pink arrow is airscrew, green arrow is pilot jet, blue arrow is main jet and its support.

Most carb leaks seem to occur because the float bowl gasket (part number 4GY-14384-00-00) gets flattened over time. For the amount of hassle involved in putting everything back together only to find a leak, I advise putting a new one in if it looks "flat!!

Carb strip 007.jpg

 

Make sure you don't lose the little brass thingy arrowed in red below. It has been known for them to fly across the garage (never to be seen again) when blowing out the float bowl with the airline disbelief

Carb strip 008.jpg 

Not much more to add really other than to pop it all back together and wind the airscrew out 2 to 2.5 turns* before putting the carb back on the bike wink

*The manual says 1.5 turns and this may suit your bike but I have found that the more open settings work better.

 



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