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03 800 rmk no spark

C
Apr 15, 2008
181
10
18
shingletown,ca
I've seen a lot of posts with this problem but no feed back on solutions, sled just quit going up trail.pulled plugs to check for fire, plugs sparked once on first pull then nothing,towed home,disconnected single black and white wire to eliminate,tether ,ignition switch ,tors,checked stator resistance values,passed,pulled flywheel to check stator wires,good, pulled stator checked solder connections on back of stator good. but what I did find was remnants of a
old water pump belt wedged in between all flywheel magnets( filling the gap between magnets) removed all belt debris, reassembled, tested 1 set of spark to plugs then nothing. tested with known good coil and CPU, nothing, Any thoughts? Thinking secondary windings in stator bad, but passed RESISTANCE TO test? what gives? Thanks in advance, CRANK
 
J

jim

Well-known member
Nov 26, 2007
1,014
635
113
Boise
Chunks of debris in the stator, and the fact that you have tried CPU and coils, points to the stator. Even if you have continuity with a multimeter, you can still have issues with it running properly. Are headlights flashing when you pull the cord? Any indication of electricity being generated?

You could also have an electrical gremlin with a short or bad ground somewhere.
 

whoisthatguy

Well-known member
Lifetime Membership
Dec 27, 2007
809
248
43
The thermostat on top of the cylinder cap will go out every few thousand miles, and disconnect all electricity to the plugs. You can test for this defect by disconnecting the 2 wire plug to this thermostat, that sits above the engine, and then make yourself a small U shaped wire that you have removed some insulation at each end. And then plug those 2 end wires into each end of the 2 wire plug that you just disconnected, so as to connect the wires to each other. Electrical tape in place. This U wire will complete the circuit that gets electricity from the stator to the CDI, and then to the coil and then to the plugs.
 
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