Just happened upon your channel this morning and I’m not sure how I’ve never seen it, looks like you’re putting out good info. Anyways I’ve got a 661 that I threw a weisco pop up in and did a little polishing on the exhaust and muffler modded. Seemed like on mine the mtronic never calibrated properly, saw wasn’t reving up or making very good power and I wasn’t sure what the issue was so I just converted it to a manual carb. Thing turns way more rpm than the mtronic was allowing and the torque it makes now is insane.
Thanks for taking us along :) I just can’t stand the electronics in modern saws. Give me a flat head screwdriver over thousands in electronics and parts that then still don’t work!
Hello Sir.. On one of your other videos I watched, you were working on a m tronic chainsaw you mentioned that you squeezed the trigger and it went to full throttle and that you couldn’t shut it off. I’m working now on a ms 661c and it is doing that exact thing to me. I put in a new ignition, solenoid and fuel filter and still does the same thing. It starts fine. I can let it idle for two minutes and it just sits there idling fine but once I squeeze/pump the trigger, it 6:35 accelerates to screaming fast. I panic because using the switch to turn it off, does not turn it off. I have to choke it. Did you resolve yours or what do you think the issue is?
Sounds like a throttle linkage/ carb issue. If I remember correctly the one I had was being repaired after it had been run over by a skid steer. The throttle shaft on the carb was bent and would not return to idle.
I'm not against autotune/mtronic. I'm actually ready for the "open source/hacked" versions where the end user can program their saw to their whims. I'd say a standalone ecm will come before the modified big brands get a reliable backdoor though. But like the 261cm... and most of the early huskies.. i'm not a fan of having my proverbial limiter caps yanked to full lean and/or having to do the hokey pokey to reset it :-D
Richard, do you have a part number for 2012 Ms 661 first gen mtronic carburetor, I have one leaking fuel when sitting from the Venturi. And is it required to have A dealer install it or can you install it and just perform a reset procedure? Found it WJ 140 A walbro carb, can I swap it out and just do a gen mtronic reset ?
Maybe all you need is a carb kit and a new solenoid? Regardless, a reset is recommended, but not necessary when replacing any of the MTronic components. Just fire it up, stick it right in the wood and feather the throttle if needed to get it under load for a few cuts. Allow it to find idle in between cuts. Mtronic remembers the settings of the last run, so with a leaky carb the fuel settings are going to be a little off. Whether you repair or replace the carb, it won't need to be plugged in.
@@richardflagg3084 are you certain because the Walbro information associated with this kit number only lists MS 660 , mine is a 2012 dom MS 661 , the kit assumed is a K15 WJ
@@richardflagg3084 yea I agree with you on weak 660 cylinders, that's why I have a stash of flat top non decompression valve Mahle 066 jugs that I swap onto the 660 cases. 660 and 440 are still my everyday logging saws
Can you still get this piston. I’ve been searching high and low. Going down every rabbit hole I can find on the inner webs and keep coming up empty handed 😂
Looks like Dave from Chainsaw Conservation Components, who originally spec'd out the piston and paid for the limited run is out of stock. Dunno if he's going to have another batch made. Keep an eye on his website.
@@richardflagg3084 what would be a good way of getting ahold of you. I’m trying to source a wiesco piston for a 661c CCC Racing website has shown them to be sold out for a while now. I’ve tried emailing them twice to inquire as to when they would have them back in stock but I never get a response.
The original black ones were very problematic. I replaced/upgraded a bunch of them. I've yet to see a failed white/grey solenoid. They are much more robust. Time will tell, they have been out for a couple of years now. That's good news.
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Thank you for the plug and the buisness Richard 🤝keep up the good work enjoying your videos always good info 👍
Thanks Gordy
Going to be as you would say jam up and jelly tight babe! Can’t wait to see it in action. They’re one of few saws that run amazing even stock. 🤙🏽
Just happened upon your channel this morning and I’m not sure how I’ve never seen it, looks like you’re putting out good info. Anyways I’ve got a 661 that I threw a weisco pop up in and did a little polishing on the exhaust and muffler modded. Seemed like on mine the mtronic never calibrated properly, saw wasn’t reving up or making very good power and I wasn’t sure what the issue was so I just converted it to a manual carb. Thing turns way more rpm than the mtronic was allowing and the torque it makes now is insane.
Rich nice diagnostics. 👍👍😋😋😉😉
Thanks for taking us along :) I just can’t stand the electronics in modern saws. Give me a flat head screwdriver over thousands in electronics and parts that then still don’t work!
I love stihl motomix
Helloo mate, will i need the diagnostic if I buy a machine like this? cheers
Hello Sir..
On one of your other videos I watched, you were working on a m tronic chainsaw you mentioned that you squeezed the trigger and it went to full throttle and that you couldn’t shut it off.
I’m working now on a ms 661c and it is doing that exact thing to me. I put in a new ignition, solenoid and fuel filter and still does the same thing.
It starts fine. I can let it idle for two minutes and it just sits there idling fine but once I squeeze/pump the trigger, it 6:35 accelerates to screaming fast. I panic because using the switch to turn it off, does not turn it off. I have to choke it.
Did you resolve yours or what do you think the issue is?
Sounds like a throttle linkage/ carb issue. If I remember correctly the one I had was being repaired after it had been run over by a skid steer. The throttle shaft on the carb was bent and would not return to idle.
I'm not against autotune/mtronic. I'm actually ready for the "open source/hacked" versions where the end user can program their saw to their whims. I'd say a standalone ecm will come before the modified big brands get a reliable backdoor though.
But like the 261cm... and most of the early huskies.. i'm not a fan of having my proverbial limiter caps yanked to full lean and/or having to do the hokey pokey to reset it :-D
Well said, Sir
Im having the same problem with mine . Did the new carb fix it ??
I ended up replacing the entire carb.
Sound like that song they used to sing on he haw if it weren’t for bad luck have no luck at alll😂
Richard, do you have a part number for 2012 Ms 661 first gen mtronic carburetor, I have one leaking fuel when sitting from the Venturi. And is it required to have A dealer install it or can you install it and just perform a reset procedure? Found it WJ 140 A walbro carb, can I swap it out and just do a gen mtronic reset ?
Maybe all you need is a carb kit and a new solenoid? Regardless, a reset is recommended, but not necessary when replacing any of the MTronic components. Just fire it up, stick it right in the wood and feather the throttle if needed to get it under load for a few cuts. Allow it to find idle in between cuts.
Mtronic remembers the settings of the last run, so with a leaky carb the fuel settings are going to be a little off. Whether you repair or replace the carb, it won't need to be plugged in.
@@richardflagg3084 would you by chance have a carb kit number ?
@@cbnx82703Walbro K10-WJ
@@richardflagg3084 are you certain because the Walbro information associated with this kit number only lists MS 660 , mine is a 2012 dom MS 661 , the kit assumed is a K15 WJ
I like the 660 more than the 661 what's your thoughts mate
The early flat top 066's are my favorite. They are noticeably stronger. The 661 IMHO is better than the choked down late model MS660's.
@@richardflagg3084 power isn't everything
I know a carb is a carb, but a 661 mtronic carb is much more expensive than a 660 wj69 carb, or the Tillitison replacement
@@forrestwright5981 That ain't no joke. I may put an 880 carb and boot on this thing in the future, for science and stuff.
@@richardflagg3084 yea I agree with you on weak 660 cylinders, that's why I have a stash of flat top non decompression valve Mahle 066 jugs that I swap onto the 660 cases. 660 and 440 are still my everyday logging saws
Can you still get this piston. I’ve been searching high and low. Going down every rabbit hole I can find on the inner webs and keep coming up empty handed 😂
Looks like Dave from Chainsaw Conservation Components, who originally spec'd out the piston and paid for the limited run is out of stock. Dunno if he's going to have another batch made. Keep an eye on his website.
@@richardflagg3084 that’s what it looked like to me too. Thanks for your time I appreciate it!
Richard do you have a Facebook page??
I do not , sir
@@richardflagg3084 what would be a good way of getting ahold of you. I’m trying to source a wiesco piston for a 661c CCC Racing website has shown them to be sold out for a while now. I’ve tried emailing them twice to inquire as to when they would have them back in stock but I never get a response.
A lot of fuel solenoid issues on the mtronic carbs.
The original black ones were very problematic. I replaced/upgraded a bunch of them. I've yet to see a failed white/grey solenoid. They are much more robust. Time will tell, they have been out for a couple of years now. That's good news.