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gsehntr
08-19-2009, 10:33 AM
I am working on a riding lawn mower that has the FC420V Kawasaki engine that won't start. When turning over the engine, it acts like it is out of timing. I have spark, compression and the flywheel key is installed correctly and not broken. When I add fuel to the carb, the engine tries to back fire through the carb.

Any ideas?

Restrorob
08-19-2009, 12:42 PM
Check the valves/push-rods and adjustment;


http://i107.photobucket.com/albums/m314/Restrorob/Kawasaki/FC/FCValveAdjustment.jpg

gsehntr
08-19-2009, 01:29 PM
I adjusted valve clearance, one valve was at 8 and the other at 10. They are both at 6 now. Still doing the same thing????

Checked fuel and cleaned carb....

I MOW ALONE
08-19-2009, 02:13 PM
throw a new plug in it i have had a plug give spark but do the same thing threw a new plug in and all fixed. these kaws are funny like that from my experience with them.

gsehntr
08-19-2009, 02:39 PM
What does the ignition trigger do for the system??? I will throw a plug in also.

Restrorob
08-19-2009, 06:55 PM
The trigger/igniter/control module tells the coil when to fire, In most all cases when this fails it stops firing all together.....

gsehntr
08-20-2009, 06:40 PM
Just to let everyone know, I replaced the ignitor and coil, still didn't fix it. The spark plug replaced it and all works great. God Damn spark plug anyway????

I MOW ALONE
08-20-2009, 07:36 PM
I knew it.why did'nt you try the plug first? Only a couple bucks.

Restrorob
08-20-2009, 09:33 PM
why did'nt you try the plug first?


Guess I stuttered in post #6..... http://www.xtremesystems.org/forums/images/smilies/shrug.gif