View Full Version : john deere walkbehind wont start 12.5 hp engine

04-07-2008, 06:23 PM
i have a john Deere walk behind 12.5 hp Kawasaki high torque engine. i cannot get any spark. new plug, ignition coil was replaced last spring,new igniter.im am stumped on yhe whole thing.i lightly sanded the ignition coil [little rust].what happend was i replace the drive belt.started the mower, engaged the pto. it stuggled with the pto i went to turn the gas up and it died [no spark ever since]. any information would be great guys. :) thanks

04-07-2008, 06:40 PM
Sounds like you have a bad pto or operator's presence switch, If you disconnect the harness kill wire (most are black) from the igniter and it now has spark this will show a switch problem.

04-07-2008, 08:30 PM
i think the pto is fine. are you talking about the 2 wires going in to the igniter.i have 2 white wires going in to the igniter. they both go to one connecter into the igniter.

04-07-2008, 09:04 PM
Instead of guessing post the Deere model/serial number so I can look up the wire diagram. There has got to be a kill wire going from the igniter to the key switch.

04-07-2008, 10:23 PM
john deere commercial walk behind mower fc400v-as05 john deere Kawasaki 12.5 hp high torque engine.gx1450x050073 e/no fc400v009175

04-07-2008, 10:48 PM
OK, Here's the wire to disconnect;


06-11-2008, 10:06 AM
I have the same problem with my Kawasaki, did you finally get spark? I have done everything I can think of and still no spark. Any suggestions would be appreciated....

06-14-2008, 03:18 AM
Deere had a service bulletin on some of the wiring harnesses. The wies were too small for the current. I had one go bad and fried some other wires. I bought the repair kit and the problem was solved.