Carb Cleaning and Jetting Questions

[340frontporch]

this is probably insanely stupid, but is there a gasket to replace when cleaning the carb? i'm planning on cleaning mine soon along with a top end rebuild and am making sure what i need to get. also, does anyone have a good starting point for rejetting when there's no muffler and pod filters on the carbs?

 

[inxs]

- which carbs?...ah 75 XSB? BS38

 

[340frontporch]

the bikes a 75 xs... so i have no idea, haha... failry new to all the mechanical stuff... but i pick up real well

 

[inxs]

- original specs...2 cables

- main jet....US...127.5.....EU...130
- needle....................Z6
- pilot jet.................#45
- start jet................#0.7
- needle...................4NO8..4th slot
- float.....................24mm +/- 2.5mm
- pilot air jet..............#1.0
- main air..................#1.0
- float jet.................#2.0
- butterfly.................#120

 

[340frontporch]

which would mean that it's a what carb? and does the gasket need to be replaced? i assume it would be a good idea to replace.

 

[inxs]

- BS38...650central sells kits #MXS48-1919, you would need 2, they include the gaskets

- you can visually compare your carb here

 

[xstwin]

As long as your taking them apart I would just get rebuild kits.As far as jetting goes when u say no mufflers and pods I assume your running some sort of drag pipe or just headers, I would start at 135 or 140

 

[340frontporch]

what gasket sealer do you use for carb gaskets? the crap mikes xs sells? i assume it would matter do to the gas flowing all over it.

 

[650Skull]

what gasket sealer do you use for carb gaskets? the crap mikes xs sells? i assume it would matter do to the gas flowing all over it.

Never a gasket sealer, i have always used a small even smear of grease on both sides of the gasket then it will always be easy to get off

 

[340frontporch]

what does everyone use for the actual cleaning process... any good chemicals out there?

 

[inxs]

- for the outside, diesel fuel, a toothbrush and compressed air
- for the inside,eg pilot jets...an aerosol can of carb cleaner, compressed air
- an ultrasound bath if you have access to one

 

[340frontporch]

has anyone used engine degreaser? or is that gonna eat away at the carb?

 

[340frontporch]

new question, same thread... lost a damn friggin' choke plunger springs and can't seem to find any (sold seperately) on mikes xs. or really anywhere else for that matter... anyone have dimensions on them? i'm hoping i can get them from mcmaster or lowes or something.