Hello Lawn mower people. I just bought a few lawn boy mowers that need some fixing. I think they are pretty cool and I need some help with this one to get spark. The key slot is mucked up, so I tied the two wires together. There is no battery, so I tied those two wires together. Pulled motor over and still no spark. I connected a 12 volt power source to the battery wire, pulled the two levers against the handle and got the starter to spin. Starter would spin but would not pop out to engage gears to turn motor over. I would like to get the electric start to work, but for now I would like to get spark. Dos anyone know what I must to to the wiring to get spark? As far as I know the coil my not be good. Is there a way to check the coil?
#2
Flintmotorsports
First thing pull the plug make sure it is new and then pull it over to see if there is spark if not try sanding the
flywheel magnets with sand paper and unplug the kill wire from the coil and see if it starts if it does then try plugging in the wire
and that way you will know if it is the wiring or the coil.
I'm going to assume that the spark has nothing to do with the starter electrics. I also am assuming that the bar under the handle must be drawn up against the handle to get spark. Will do as you suggested tonight.
Thanks.
#4
Flintmotorsports
The electric start has nothing to do with the spark and the bail bar does have to be pulled in order to all the motor
to have spark and be pulled over.
Purchased a new plug. Set the coil at .010. Did like you suggested, with and with out the wire connected to the coil. Not seeing spark. Is there a way to check the coil off the motor with a volt meter?
#6
Flintmotorsports
not that I know of what was the condition of the flywheel magnets? if they are all good I would say you need
a new coil and that will fix the problem
Thanks for your input. I will post after I put a new coil in.
#11
Flintmotorsports
ok hope it all works out for you.
#12
d_sharier
Ignition coil failures are one of the most frequent problems I see in Lawn-Boy mowers. As previously stated: Engage bail, remove ground wire from coil, Check contact point between coil and engine block to ensure good clean connection, Check magnets on flywheel, ( you can sand them if you want to, but rust build up won't prevent spark production, spin engine in excess of 300 rpm and check for spark. If no spark then you can bet the coil is bad. I have had great success with the aftermarket coils. I have only had one problem in the 7 or 8 years that I have been using them.
Put an after market coil in, and now have spark. I'm finding that the gas tank shut off valves sure like to leak. My remedy for this was to take the valve off of the tank, grind off both of the pegs that position the seal, grind a slot to give the gas a new pathway, mix up some epoxy and epoxy a 3/4 diameter plug in to where the valve would sit.
