I have so many times this problem. I can clean the nozzle and the extruder, make the calibration, changed the extruder motor bearing, done the axis maintenance, changed thermocoupler but the problem is still there. Parts can be small or big , it makes no difference it stops when it should start to print horizontal thin lines.
Hello,
How does the motor behave when the extrusion stops? Is it stuttering or rotating freely?
Also, once the extrusion stops - please, push the filament manually. Will the motor grab it and start extruding again? This could indicate the extruder motor is malfunctioning.
Best regards,
Karolina
Motor is always rotating.
When this problem doesn’t happen I have a high percentage of completed prints, not 100% but near.
There’s something happening in that phase that get the filament stuck. If I push it, it then starts to extrude again
Thank you for providing more details. It seems that the extruder motor is at fault. Please, contact your reseller for a spare part or fill in the support form so we can provide you with further help.
Motor is not fault because all the printed parts always come to an end.
I investigated the problem with more attention…and found the exact moment the problem occurs
When printing raft, the main lines as in the pic, the printer has 3 process:
1- start to make them slowly
2- goes all over again with increased speed
3- goes over the border with a more increased speed
the it makes all thin orizontal line
in the 3rd step the filament get stuck in the extruder, no matter how big the part is…it can be small
I see the filament get stuck and the motor is rotating… If in this moment I help the printer by pushing the filament by hand it continues to print without problems.
I have changed extruder bearing and screw yesterday, some prints went good but few minutes ago I got the same problem.
I’ve been having this problem too, with black Z-ABS and PETG. The raft skeleton prints fine, but stops extruding when starting to do cross hatching. If I catch it in time and manually help the filament through the top of the hot end it has (so far) always finished the prints. I didn’t have this problem with warm gray Z-ABS but it may also started when I upgraded from an older Z-Suite to the current version (2.12.1.0) since I upgraded when I switched from warm gray to black filaments…
Just as an addendum, but I switched back to cool gray Z-ABS (from black) and on the 1st print the problems with filament extrusion stopping after the basic part of the raft disappeared. It is only one test, and a different part than the one that failed with black Z-ABS so probably not proof. Is there any reason to expect black Z-ABS to be more problematic than other colors?
Hi Michael,
thank for your experience but I’m having problems with all colors
Roby
Hello,
Thank you for additional information. Apart from the picture, is it possible to provide a video showing when the extrusion stops? However, if it helps when you push the filament manually at a certain point - it can still indicate the extruder motor is at fault (despite the fact you changed the extruder bearing).
Please, fill in the support form so we can go through the case and help you resolve the problem.
Best regards,
Karolina
The motor is still turning when the filament stops
After some weeks of testing I can now tell that I solved this issued. 
Situation was becoming very frustrating, EVERY print I started gave me the problem.
Months ago after an extruder bearing change I replaced the stripped original screw with a stailess steel one.
To my surprise some weeks ago I investigated it and found it was 2.85mm diameter instead of 2.95mm.
With a new screw of correct diameter I’m getting no problems at all
Things have worked a week or less theh the problem was back and I’ve lived with it since nowdays. Recently I bought a second M200, it was only 1000hrs very new. It prints my files and ABS material without any problem. So I wanted to investigate my problem again and began swapping parts.
Swapped PCB and extruder(recalibration done): nothing changed
Swapped Zmotor and gear: nothing changed
Swapped preforate plate and heater (recalibration done): nothing changed
it seems when it starts 2nd layer of raft that nozzle it too tight to 1st and it clogs
I checked z ballscrew for any play but everything seems tight
what else can I check ?
nobody ever replied to this problem 
I made other test, first raised temperature to 250 instead of 230 to see if it could be a temperature problem…nothing changed
it seems the nozzle is too close to the layer below. the exac moment the problem appears is on 2nd raft layer, when it start extrunding thin line over the first ones. at some point it get stuck and even if I try pushing filament it is hard to push. I found that if a press down a little preforated plate I can easily push filament, but when I remove my hand it get stuck. I hear the nozzle hitting previous filament when it moves. I made a test disconnecting x/y motors during 2nd layer to be able to move head free around and I feel nozzle hit printed layers. Anyway this problem persist until printer starts to print thin horizontal lines on 3rd layer. In this moment I can easily push filament and print comes to the end without any problem in always perfect conditions. Some parts takes 30hrs, always print ABS. I have a 2nd m200, same .zcode and no problem printing raft
I thought of a Z axis problem but as I said all prints come out perfect
Hey, sorry for the long wait for a response. I will prioritize your issue.
Please send photos and the file you want to print. Additionally, describe the problem in as much detail as possible—what material you are using, what you have tried so far, and what results you got.
If needed, I can call you on WhatsApp.
everything is written in this thread, your seems just only a reply with no help
Can you, during printing, select an external material and in the advanced embroidery option choose the printing speed and material feed for the raft option, e.g., after 90%?
same file on 2 M200, one printer has problems, the other no
I generally encountered this problem when the PTFE tube was already worn out in the hotend or when the nozzle had previously printed filament at a higher temperature. Additionally, debris from the motor’s drive gear can clog the hotend.
Can you unscrew the nozzle and disassemble the hot end? Check if the filament passes through the hot end without any issues.