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By RGS
1989 Moto 4 YFM350ERW intermittent spark.
Quad has set for about 7 years and was running when parked. When I replaced the battery and attempted to start it had no spark.
What I have done. Followed troubleshooting in the manual.
1. Coil failed the resistance check so I replaced it. Still no spark.
2. I performed resistance checks on the stator and they all pass.
3. Found a bad rear brake stop switch and unplugged it and connected the wires in order to disable. Now I have intermittent spark. I believe that the issue is with either the stator or CDI and not sure which.
1989 seems to be a transition year for electrical. I can get new aftermarket CDI units for 87-88 and 90-94. I cannot get ones for a 89. I can get new stators for 87-89 and 90-95. Looking at the schematics the wiring on my moto is closer to the 90 ones on the ATV side of the CDI and closer to the 87-88 on the stator side of the CDI. Looking at part supply sources the stator housing is the same part # for all the years and looking at some of the stators on Amazon that have the dimensions on them both of the stators are the same size.
What I am thinking of doing is to replace the stator and CDI with a 90-95 one as these parts are all readily available. Does anyone know if this has been tried before and if there are any issues with doing this.
As a side note I also have a 1993 Moto 4 YFM350ER that has been sitting longer but it is located about 400 miles from me at this time. By doing this change in addition to being able to get parts I will also have 2 ATV’s that are the same electrically.
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By Atomusthenes
I would appreciate being pointing in the correct direction for a wiring diagram and or schematics of the 88 Honda FourTrax 300 4x4 if anybody has any knowledge of how to test the ignition system stator and CDI I don't know if the voltage regulator probably and also the FCU I put a new ignition in it it is a cheap aftermarket one doesn't have the correct plugs but has the correct wiring scheme I get power the neutral light comes on and the oil light stays on it turns over but I have no spark
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By Memphis
Not sure if in right place but here goes
My 300 is lacking power only reaching 30mph and struggling uphill everything else seems ok other that this problem cleaned all fuel new filter pan and all new fuel pump and spark plug full oil change is there anything I am missing
ps It is auto and does noy seem to want to get in another gear 5200 rpm at 30mph
Regards
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By Frank Angerano
So I decided to pick up a small trailer if I could get one for the right price. I found this one for a few hundred bucks on Craig’s list. It is a galvanized trailer which is exactly what I was looking for. The wood was shot and needed some minor repairs which I could care less about as long as the chassis was good.
I striped it down and put a new deck on. I had some vinyl realtree graphics that I had laying around so I added them to the fenders which I think worked out well. Very happy with this little guy.
I'm having the iron workers at my jobmake me up a few lightweight side rails that will have a 22 degree bend in them to accommodate the tires that slightly hang over the edge and will incorporate some tie down points as well.
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By BuckBilly
I like to ride in wooded and grassy areas. It takes my mind off the everyday routines and helps me deal with my father's cancer. Also gives me a reason to get involved with forums like this one.
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