roadapples 6,981 #1 Posted August 24, 2017 I have a c160 auto. with a replacement M16S spec # 711502. I've mowed with it for over two years with no problems. Lately after 30 to 40 minutes, which I've timed, it starts sputtering and quits... I thought it was fuel related so I replaced the fuel lines, filter and rebuilt-cleaned the carb twice. Also checked vent in gas cap and fuel filter is full. The last two times it quit I left it sit over night without changing a thing and it starts right up and runs fine for another 30 min. So now I'm thinking something electrical is getting hot. Would appreciate your thoughts on where to start looking.... Thanks.. Share this post Link to post Share on other sites
BOB ELLISON 2,976 #2 Posted August 25, 2017 The coil is known for that. I had a car that did that and the coil would get hot and cut out. Also the condenser does the same thing. 6 Share this post Link to post Share on other sites
roadapples 6,981 #3 Posted August 25, 2017 Being a magnum it doesn't have a coil like the K's... Share this post Link to post Share on other sites
Big_Red_Fred 1,547 #4 Posted August 25, 2017 Spark plug or wire isnt making a good connection to the plug, gets hot & looses connection. My sons 310-8 had that issue 1 Share this post Link to post Share on other sites
BOB ELLISON 2,976 #5 Posted August 25, 2017 5 minutes ago, roadapples said: Being a magnum it doesn't have a coil like the K's... Thank you @roadapples I did not think about the m16. I just saw that it was a C160. You are right again no coil on the M 16 1 Share this post Link to post Share on other sites
roadapples 6,981 #6 Posted August 25, 2017 Thanks anyway for your quick reply. @BOB ELLISON Share this post Link to post Share on other sites
Big_Red_Fred 1,547 #7 Posted August 25, 2017 Could be a something broke loose in fuel pump to, found a piece of rubber on the 414-8, blocking the hole I have 2 old school Fuel pumps if you need any ? Free, i'm not looking for any thing, also have a Walbro Carb off a C120, asked ericj if he needed a carb, said not really, rebuilt too, Free 4 Share this post Link to post Share on other sites
BOB ELLISON 2,976 #8 Posted August 25, 2017 (edited) I think I would start with the easy things first. Check the gas cap for vents pluged. After it stops running spray gas in carb to see if it runs if it does its gas related. I'm not much good on the M series yet. Sorry I couldn't be more help. The 30 min thing tell me pluged gas cap or fuel starvation. Edited August 25, 2017 by BOB ELLISON 5 Share this post Link to post Share on other sites
Ed Kennell 35,769 #9 Posted August 25, 2017 I think I can solve the problem Jay. 1. mow for 29 minutes 2. take a 30 minute break and have a cold beverage 3. repeat steps 1. & 2. till mowing is finished. 8 6 Share this post Link to post Share on other sites
Big_Red_Fred 1,547 #10 Posted August 25, 2017 Ed, your getting like me LOL 1 Share this post Link to post Share on other sites
Bill D 1,599 #11 Posted August 25, 2017 (edited) I say change the coil. The coil on the m16 can go bad. I have seen B&S Magnetron coils fail and they are solid state just like the Kohler coil on the M16. Kohler refers to it as an ignition module, not a coil, sorry for any confusion. I would try changing it with another known good module off a spare engine if you have one. If you don't have a spare buy an aftermarket one from Brian Miller for $60.00. He also has the OEM Kohler part for $87.20. The part number is 47 584 03-S. Good luck. Edited August 25, 2017 by Bill D Additional Information 1 Share this post Link to post Share on other sites
Big_Red_Fred 1,547 #12 Posted August 25, 2017 @Bill D He said there isnt a coil on his Magnum ? Share this post Link to post Share on other sites
squonk 38,925 #13 Posted August 25, 2017 You can buy a cheap inline spark tester at Napa. It looks like a test light with a terminal the spark plug cable hooks to and a short spark plug cable on the other end. Carry it with you and when it quits plug it in and check the spark. It there's no spark replace the magnum spark making doo hingus. If there's spark, replace the fuel pump. 8 Share this post Link to post Share on other sites
Ed Kennell 35,769 #14 Posted August 25, 2017 36 minutes ago, squonk said: the magnum doo hingus. Now I finally know why I prefer the Ks over the Ms. Who would want an engine with a DOO HINGUS hanging on it? 4 1 3 Share this post Link to post Share on other sites
JC 1965 1,528 #15 Posted August 25, 2017 53 minutes ago, Ed Kennell said: Now I finally know why I prefer the Ks over the Ms. Who would want an engine with a DOO HINGUS hanging on it? What's the part # on the DOO Hingus ? I can't find it in the parts manual. 1 4 Share this post Link to post Share on other sites
roadapples 6,981 #16 Posted August 25, 2017 Thanks guys, I'll check these things and get back to you. Might take a couple days.... 1 Share this post Link to post Share on other sites
Big_Red_Fred 1,547 #17 Posted August 25, 2017 Part # right here in my Mister Hainey Green acres catalog under suspenders 1 Share this post Link to post Share on other sites
woodchuckfarmer 333 #18 Posted August 25, 2017 If the valve clearance is to tight when the engine warms up the valves grow ( get longer) Then you loose your valve clearance and your compression. Wayne 5 Share this post Link to post Share on other sites