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As a follow-up to my “WTB wicked fun streetbike” thread, I broke my own rule about only buying Japanese vehicles, and a 2008 Hypermotard 1100S followed me home a couple weeks ago.
Backstory: Seller bought this new as his first street bike, he had a MX background. He never really got into street riding (only ~7500 miles total) and hadn’t ridden it in the past few years. He did start it every year and kept fresh gas/oil in it. I talked with him for a while, I knew it needed some work (new battery, tires, 7500 mile valves/belts, minor cosmetics, etc), and our agreed upon price reflected that.
Drove a few hours to upstate NY, was raining pretty good once I got there. Seller jump started it off his car, runs for a couple minutes, starts/idles/revs good. Turn it off, disconnect the jumper cables, bolt the seat back on, give it a lookover – condition as expected. Load it onto my open trailer in the rain, load up the spare parts, he signs the title/BOS, bring it home.
Few days later, got the new battery in, started up fine.
But the dash isn’t working – nothing on the display, only the backlight flashing on and off.
Headlight works, tail/brake lights work, horn works, turn signals don’t.
To be completely honest, I don’t remember noticing the dash working or not working when it was running at the seller’s house. (I talked to the seller, he remembers the dash working a couple months ago when he started it up.)
All fuses are good.
Checked the battery voltage while idling = 12.6V. Hmm.
Checked the stator, it’s shorted to ground, not good.
Looks like it needs a new stator, will probably replace R/R with a MOSFET while I’m at it.
In terms of what’s up with the dash, and whether fixing the charging system will fix it, I’m not sure.
At first I thought it might be a connector got wet towing it home in the rain. But the connectors on this bike seem pretty good quality and weatherproof.
But then with the stator putting AC voltage to ground, could that have fried something?
Found one guy with a Hyper 1100 who had a dash flashing like this and he needed to replace the ECU, but his bike also wouldn’t start (and mine does).
Another guy with a Streetfigher with a flashing dash and no start, needed to replace the dash.
Any input? Thanks!