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Similar Forum Topics
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By Kaz
Troubleshooting a no spark issue, was running OK, maybe a little rich, turned it off, now no spark. I've checked/ohmed out the main key switch, the start/stop switch, neutral switch, brake switch - all good. It will crank the starter, but no spark with the starter or when I try the pull start. I've checked all fuses and diodes. Swapped battery. New plug. New coil. Swapped in a used CDI - no help. Traced, removed, cleaned, reattached all grounds. Removed things like my winch from the circuits to be sure a bad relay or something was dragging it down. When testing voltages, the orange wire going from the CDI to the ignition coil shows no/very low voltage-shouldn't it have 12V on it? Sometimes I get a very weak, intermittent glow on my spark tester, but not enough to fire the plug. I've checked continuity on just about all wires in the harness. Checked/cleaned/lubed w dielectric grease- all connections, redid a few that looked old/dirty. I've checked the stator resistances, all good, but have a stator and rectifier ordered anyway, will arrive Sunday. I verified that the rectifier has a voltage output back to charge the battery while cranking - 10.5-11V, low, but expected while starter is engaged. What else can I check as part of troubleshooting? I have a Haines service manual, but the 1999 350 4x4 seems to be an odd model, there isn't an exact electrical diagram for it, but found one for another year that has all the same number of wires and same color wires, so I've referenced that. Any hints, tips or advice would be appreciated! Thanks!
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By P_syko
I’m brand new to 4 wheelers and just bought a 1987 Yamaha Moto 4 350. It has good compression and fuel, but no spark. I’ve looked high and low trying to find how to test all the components of the ignition system, but can’t find anything. This has a new CDI box on it, but I suspect it might be the stator. How do I test the stator on this? Any help would be greatly appreciated!
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By P_syko
Does the 1987 moto 4 350 have a low oil sensor that kills spark? Or are these too old for that kind of thing?
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By KdlH
Following on from this thread;
I've finally got around to pulling the clutch cover off to have a look at the shifter ratchet mechanism. The screw holding the pinned star wheel has come loose and the wheel flops about. Unfortunately the keyway on the shifter cam has broken on both sides, I found both pieces.
Anyone had this problem?
The keyway on the cam "ramps" out, so I'm thinking of making a slightly longer key with a ramp ground into it. I'll put it back together with retaining compound. It may not work but I think it's worth a try.
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By Bobbles
Hopefully someone can help me out, I purchased a 350 moto4 2wd while I'm trying to fix a dying honda. I can't see the vin number as there was damage and a bar has been welded where I think the vin should be, The decals say 350 moto4 Huntaway, it has the square gear change low, high, reverse up on the left of the handlebars and it has three rectangle lights up on the dash. after googling I'm struggling to find anything called huntaway, Any ideas? Thanks.
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