441 presser foot height adjustment Juki 441 presser foot change problem adjustment

[antoniosewing]

Hi, this is the first time I write.  sorry for my English.  can you help me? I changed the classic foot set on my juki 441 clone machine.  the height of the new foot was different and I tried to adjust it with the two screws that lock the bar.  since.  the foot is no longer alternate moving.  Is there anyone who knows the procedure for making this adjustment?  thanks in advance for your help.

[Wizcrafts]

• Set the stitch lever to the zero forward/backward movement position.
• Rotate the hand wheel until the tip of the needle reaches the top of the feed dog.
• The tip of the needle and bottom of the inside foot should meet the top of the feed dog together.
• If the inside foot does not reach the feed dog with the needle, loosen the big bolt on the back of the left end of the head, which controls the position of the inside foot vs the needle.
• Lift or lower the inside foot to match the needle at the feed dog then tighten the big bolt on the back then tighten down the big bolt.
• If the outer foot is not all the way down now, remove the faceplate from the head.
• Loosen the presser foot bar screws and move it down so the outer feet are solidly touching the throat plate, with the inside foot and needle resting at the top of the feed dog..
• Make sure the presser foot is facing straight forward, then tighten the screws on the presser bar.
• Rotate the wheel to lower the needle all the way to the bottom of its stroke. The inside foot should have pushed the outside foot up.
• You can change the amount of lift of the inside and outside feet by moving the crank coming out the middle back up or down in the curved slot on the shaft on the housing on the back.
• The big bolt I referred to earlier is on the left side of that housing where the curved slot is on the right, as seen from the front of the machine.

These instructions should get the outside foot lifting as the inside foot moves below the throat plate, on the feed dog. This is how I balance feet of different heights when mounted.

[antoniosewing]

thank you so much for your help.  

 

"The tip of the needle and bottom of the inside foot should meet the top of the feed dog together"

 

so I have to go down with the central foot in the case of the photo?  through this right lever, if I understand correctly? 

(now I upload the photo in the next message)

tomorrow I will try to follow your instructions and I will update you. 

[antoniosewing]

[Wizcrafts]

The inside foot must make contact with the feed dog in order to have the feet alternate up and down. By any oddball chance, could your foot lift chain, or the hand lifter lever be holding the feet up too high?

7 hours ago, antoniosewing said:

This is the "big bolt" I was referring to (I am not in my shop). It controls the vertical position of the inside foot.

[antoniosewing]

 

Hi Wizcrafts, sorry if I answer only now but I haven't been home. thanks to you, I managed to solve the problem. The first problem is that the height of the central foot was not well adjusted. the second problem was that I only understood later. is that the tip of the needle was in the right adjustment position when it came up and not when it came down. in that case I aligned my feet and solved it. I just have to adjust the pressure or maybe even the height. still marks leather a lot. thank you very much for the help!

[TheDude]

On 6/21/2019 at 8:40 PM, Wizcrafts said:

• Set the stitch lever to the zero forward/backward movement position.
• Rotate the hand wheel until the tip of the needle reaches the top of the feed dog.
• The tip of the needle and bottom of the inside foot should meet the top of the feed dog together.
• If the inside foot does not reach the feed dog with the needle, loosen the big bolt on the back of the left end of the head, which controls the position of the inside foot vs the needle.
• Lift or lower the inside foot to match the needle at the feed dog then tighten the big bolt on the back then tighten down the big bolt.
• If the outer foot is not all the way down now, remove the faceplate from the head.
• Loosen the presser foot bar screws and move it down so the outer feet are solidly touching the throat plate, with the inside foot and needle resting at the top of the feed dog..
• Make sure the presser foot is facing straight forward, then tighten the screws on the presser bar.
• Rotate the wheel to lower the needle all the way to the bottom of its stroke. The inside foot should have pushed the outside foot up.
• You can change the amount of lift of the inside and outside feet by moving the crank coming out the middle back up or down in the curved slot on the shaft on the housing on the back.
• The big bolt I referred to earlier is on the left side of that housing where the curved slot is on the right, as seen from the front of the machine.

These instructions should get the outside foot lifting as the inside foot moves below the throat plate, on the feed dog. This is how I balance feet of different heights when mounted.

By chance, I was having the very same issue with my Super Bull, found this guide, and fixed the problem in ten minutes. You're awesome Wiz! Thank you so much.