Home » Bike Specific Discussion and Help » Supermoto, Motocross, Enduro, Trail etc.. » Cr 125 hell (Won't idle)
icon3.gif  Cr 125 hell [message #297268] Tue, 07 March 2017 14:16 Go to next message
Stubiewubie is currently offline  Stubiewubie   United Kingdom
Messages: 4
Registered: March 2017
Location: Pontefract
(1) Club Racer
Hi guys please help, I have an old 99 Cr 125 an I just can't get it to idle for shit, it has a fmf and I jetted the carb as instructed by fmf 55 pilot and a 170 main jet, as soon as you kick her if no rev is applied she dies, basically I'm stuck I don't know where to go from here? Cheers any help would be amazing! Wall
Re: Cr 125 hell [message #297269 is a reply to message #297268] Tue, 07 March 2017 15:03 Go to previous messageGo to next message
spagiratwink is currently offline  spagiratwink   United Kingdom
Messages: 418
Registered: January 2016
Location: Morecambe
(4) WSS Racer
Hi , have you had the spark plug out to have a look at that, could be your running rich (if black ) maybe have a look at the float height Wink
Re: Cr 125 hell [message #297270 is a reply to message #297269] Tue, 07 March 2017 15:27 Go to previous messageGo to next message
Stubiewubie is currently offline  Stubiewubie   United Kingdom
Messages: 4
Registered: March 2017
Location: Pontefract
(1) Club Racer
Hi thanks for reply, yes it's black how can I adjust my float height?
Re: Cr 125 hell [message #297271 is a reply to message #297270] Tue, 07 March 2017 15:52 Go to previous messageGo to next message
spagiratwink is currently offline  spagiratwink   United Kingdom
Messages: 418
Registered: January 2016
Location: Morecambe
(4) WSS Racer
The float height ,standard should be 16mm, its a bit of trial and error but you need to drop the float height to perhaps 13mm to start with , by bending the tang toward the float needle, should take some of the float height away to run a bit leaner, then take another look at the plug (after you cleaned it up) smile
Re: Cr 125 hell [message #297272 is a reply to message #297271] Tue, 07 March 2017 22:06 Go to previous messageGo to next message
Stubiewubie is currently offline  Stubiewubie   United Kingdom
Messages: 4
Registered: March 2017
Location: Pontefract
(1) Club Racer
Hi mate this info is absolutely great because I have not tried this yet, sorry to be so slack, so if I have my carb sat up in it's operating position where do I take the measures from or is it all guess work mate.
Re: Cr 125 hell [message #297273 is a reply to message #297272] Wed, 08 March 2017 06:54 Go to previous messageGo to next message
spagiratwink is currently offline  spagiratwink   United Kingdom
Messages: 418
Registered: January 2016
Location: Morecambe
(4) WSS Racer
Good morning, this video will explain it a lot better that I could do in words, although they are using a gauge a good steel rule in mm's will do, not your bike but procedure is the same for all Thumbs Up
Re: Cr 125 hell [message #297274 is a reply to message #297273] Wed, 08 March 2017 08:13 Go to previous messageGo to next message
spagiratwink is currently offline  spagiratwink   United Kingdom
Messages: 418
Registered: January 2016
Location: Morecambe
(4) WSS Racer
Just an advisory, these bike come out of the factory on the rich side, running too lean can also be a problem, so not too much change at one go Thumbs Up
Re: Cr 125 hell [message #297275 is a reply to message #297274] Wed, 08 March 2017 12:46 Go to previous message
Stubiewubie is currently offline  Stubiewubie   United Kingdom
Messages: 4
Registered: March 2017
Location: Pontefract
(1) Club Racer
Cheers mate ya been great help I will try this and hopefully get back to you with some good new ha ha
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