Hi! New to Cafe Husky. Hoping to get some advice on my 2000 SM610S

[esskay]

Hi there, I recently purchased a 2000 SM 610S and I love it! It's easily the most fun bike I've ever owned in a long line of machines. Thing is the bike came in "as is" condition, and I've been slowly fixing the little problems I inherited from the previous owner (bolts snapped off in crankcase, clutch ruined with car grade 10w30, valve clearances, etc.)

My next project is to fix the cranky cold starting behaviour. Sometimes she starts right up, but most of the time I need to crank for about 30 seconds with delicate throttle and intermittent firing/missing before she actually holds idle, and I usually need a few miles of road warmup before she stops flooding out with too much throttle and/or backfiring.

The bike came without a choke; the post where I presume the choke actuator used to sit is bare on the clutch lever. I had just assumed that the cable broke at some point and the previous owner thought he'd just go without, but I uncovered something a little perplexing when I took off the tank to set the valve clearances... there's a Keihin FCR41 flatside under there... and there doesn't appear to be a choke on it.

Is this the stock carb for this model? I remember from my Suzuki Katana days that these Keihin FCR's are a pretty tasty piece of kit (maybe installed by the same owner that threw the Fast by Ferracci carbon pipe on there). I've done some searches on the forums here but have come up a bit short on resources concerning my model year, most 610 activity seems focused on the model that followed, and from what I've read I believe it came with a Dellorto carb or EFI in later years.

Carb issues aside, I'm not even convinced the FCR41 is the main issue, I've heard a lot of talk about the CDIs and igniter coils in this model being flaky. I read something on a thumpertalk thread where a fella talked about replacing the stock CDI with a "Husqvarna racing version", but he never gave a part number despite a few requests, and I can't find the thread right now. Does this ring any bells as a popular upgrade to anybody?

Sorry if all of this stuff has been covered a million times before, I honestly tried to do my due diligence before posting but came up a bit short for my model year.

Thanks in advance for any ideas on what might be going on, or ideas to fix it!

 

[johnclearysm610]

I have a 00 610 sm e start. It has a dellorto phm 40 on which I think is stock. My biggest problem I came across was the flywheel magnets came loose and caused havoc with starting etc until one day it wouldn't start at all. You can get new flywheels and stators separate from electrexworld, Google them.

 

[Theo]

I read something on a thumpertalk thread where a fella talked about replacing the stock CDI with a "Husqvarna racing version", but he never gave a part number despite a few requests, and I can't find the thread right now. Does this ring any bells as a popular upgrade to anybody?

Here the guy wrote that he had installed a "CDI with variable advance Zupin by Ducati Energia, no limiter (grey color)" on his 570 (AFAIK he sold that bike: he wrote on other forums, too). There is a pic in the post #19 in the same thread.

I have a 00 610 sm e start. It has a dellorto phm 40 on which I think is stock. My biggest problem I came across was the flywheel magnets came loose and caused havoc with starting etc until one day it wouldn't start at all. You can get new flywheels and stators separate from electrexworld, Google them.

I have always read that 610 models had that 40 mm Dellorto until the 2004 model.

 

[johnclearysm610]

Here the guy wrote that he had installed a "CDI with variable advance Zupin by Ducati Energia, no limiter (grey color)" on his 570 (AFAIK he sold that bike: he wrote on other forums, too). There is a pic in the post #19 in the same thread.


I have always read that 610 models had that 40 mm Dellorto until the 2004 model.

Me too although I have heard of a few 01 and on having different carbs. I also read somewhere on here of a guy who used a lifan 150 cdi, all he had to do was change the plug on it to suit. I'd def start with checking the rotor magnets as the symptoms sound a lot like what mine was doing.

 

[esskay]

Thanks! That's all great information!

I'd def start with checking the rotor magnets as the symptoms sound a lot like what mine was doing.

I had to rip the flywheel off in order to get at my sheered crankcase bolts, I didn't notice any of the magnets being loose on the interior. Were yours literally separated from the flywheel?

Here the guy wrote that he had installed a "CDI with variable advance Zupin by Ducati Energia, no limiter (grey color)" on his 570 (AFAIK he sold that bike: he wrote on other forums, too). There is a pic in the post #19 in the same thread.

Thanks for this! I will definitely look into that.

I also read somewhere on here of a guy who used a lifan 150 cdi, all he had to do was change the plug on it to suit.

Depending on cost, this might be right up my alley!

 

[johnclearysm610]

Thanks! That's all great information!


I had to rip the flywheel off in order to get at my sheered crankcase bolts, I didn't notice any of the magnets being loose on the interior. Were yours literally separated from the flywheel?


Thanks for this! I will definitely look into that.


Depending on cost, this might be right up my alley!

One of the four magnets was completly gone and had turned to dust. It was a right mess. Other people have said to check them give them a good pull cuz if they have slid a bit it can knock the timing out
Search eBay for lifan 150 cdi they are dirt cheap. Search the forum too there should be a post somewhere here.