Edgee 12 #1 Posted August 1, 2020 I have 67 857 with a 8 horse Kohler engine. Will any 12 coil work as a replacement ? Thanks ahead of time. Share this post Link to post Share on other sites
pfrederi 17,959 #2 Posted August 1, 2020 28 minutes ago, Edgee said: I have 67 857 with a 8 horse Kohler engine. Will any 12 coil work as a replacement ? Thanks ahead of time. Yes any INTERNALLY resisted coil will work. 1 Share this post Link to post Share on other sites
squonk 41,610 #3 Posted August 1, 2020 (edited) You need an internal resisted coil. Napa IC14 works. Edited August 1, 2020 by squonk 1 Share this post Link to post Share on other sites
SylvanLakeWH 26,105 #4 Posted August 1, 2020 to another Michigander!!! Spent a lot of summer vacations in a rented cottage in Caseville!!! One of those rare places where you get both sunrise and sunset - Tip of the Thumb! 1 Share this post Link to post Share on other sites
WHX?? 49,445 #6 Posted August 2, 2020 Boys got you covered. . 1 Share this post Link to post Share on other sites
953 nut 56,095 #7 Posted August 2, 2020 16 hours ago, Edgee said: 67 857 with a 8 horse Kohler engine. Glad you found us, any questions that come up please feel free to ask them. One thing we ask of all new members, 1 Share this post Link to post Share on other sites
Edgee 12 #8 Posted August 3, 2020 13 hours ago, 953 nut said: Glad you found us, any questions that come up please feel free to ask them. One thing we ask of all new members, Here are some pictures 3 1 1 Share this post Link to post Share on other sites
Edgee 12 #9 Posted August 3, 2020 Got another question for you. At full throttle it starts running rough with a bit of back fire and black smoke. Put a new plug but it still does it. Any suggestions ? Thanks, Edgee Share this post Link to post Share on other sites
Edgee 12 #10 Posted August 3, 2020 It runs great at cutting speed and idle Share this post Link to post Share on other sites
Tuneup 1,433 #11 Posted August 3, 2020 Edgee - go ahead and trim the carburetor adjustments. At full throttle, turn the top screw clockwise to the point of stumble and then counter to the same. Settle on the mid point. That'll clear the black smoke. She sounds much too rich. I run mine a little toward the rich side in the hopes it runs cooler. The side screw is the same method but for throttle closed. 1 Share this post Link to post Share on other sites
WHX?? 49,445 #12 Posted August 3, 2020 Good advice Tuneup let us know if that helps Edgee. Sure is a nice looking all original! The 857 is a favorite model of everyone around here. 1 Share this post Link to post Share on other sites
Edgee 12 #13 Posted August 6, 2020 On 8/3/2020 at 8:14 AM, Tuneup said: Edgee - go ahead and trim the carburetor adjustments. At full throttle, turn the top screw clockwise to the point of stumble and then counter to the same. Settle on the mid point. That'll clear the black smoke. She sounds much too rich. I run mine a little toward the rich side in the hopes it runs cooler. The side screw is the same method but for throttle closed. Tried it and that did the trick. Thanks 1 Share this post Link to post Share on other sites
Tuneup 1,433 #14 Posted August 6, 2020 That's a special machine! Glad it's back to purring. 1 Share this post Link to post Share on other sites