FJR starting issue - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #1 of 9 (permalink) Old 05-15-2019, 11:49 AM Thread Starter
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FJR starting issue

I searched around and did not find this exact scenario. Went to start the 14 FJR this morning and no can do. Starter spins really fast. Engine does not spin at all. Starter is not engaging flywheel. Solenoid problem? Starter gone bad?

Time to use the YES warranty?

There is always a silver lining. It happens in my garage and not in Death Valley where I was a couple of weekends ago.
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post #2 of 9 (permalink) Old 05-15-2019, 01:01 PM
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Starting is controlled by a starter clutch behind the stator (left side). As the starter spins, it turns a gear and bearing mechanism that locks up to engage and turn the crankshaft. When not in use (engine running), the bearing free-wheels as it is a one-way mechanism. IF indeed your starter is spinning and the starter clutch is not, it's possible the starter clutch is faulty, but they don't really fail unless the bike is really old. IF this is your issue, then use the YES.

Now, if you mean the engine is turning over really fast and not starting, that's another matter..... ECU may think it needs to add fuel (cold start mode), so the fix is hold wide open throttle and crank for a few seconds. I recommend 10-15 second bursts... make sure your battery is fully charged first, might have to do this more than once. Did you start it, run it with no warmup and shut it down? That will fool the ECU (sometimes).

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post #3 of 9 (permalink) Old 05-15-2019, 03:18 PM Thread Starter
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Issue is described in your first paragraph. I've had the other scenario happen a couple of times on my 08 FJR and you are correct, WOT and short bursts and it will eventually start.

Surprised about the starter clutch though. Only have 20K on the bike and its a 2014 model so if that is the problem it would be out of the ordinary.


At least it happened at home and not out on a trip somewhere.
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post #4 of 9 (permalink) Old 05-15-2019, 03:52 PM
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Very odd for starter clutch to fail or even wear out...

Funny story, on my project bike I had opened up the starter and put it back together with the magnets rotated 90 degrees. Installed starter, all it would do is spin... freakin' thing was running backwards freewheeling the starter clutch. Off come the TB's, out with the starter, fixed it, reinstalled.. all good. Next time I'll know to note position of the magnets, LOL.

Ray
Keep yer stick on the ice....
2014 FJR1300A - Root Beer
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post #5 of 9 (permalink) Old 05-15-2019, 06:19 PM
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Hmmm. I looked through Mr. Haynes and the 2013 FSM. I didn't see anything about magnets at all.


Documented where?

2013 FJR1300A
1984 GPz750
Series III fairing removal:

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post #6 of 9 (permalink) Old 05-15-2019, 07:43 PM
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There are 4 permanent magnets inside the starter housing (cylinder) which goes around the armature. They have to be in proper phase with the brushes.
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Ray
Keep yer stick on the ice....
2014 FJR1300A - Root Beer
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post #7 of 9 (permalink) Old 05-15-2019, 07:56 PM
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Ray, 2013 FSM shows the starter motor on pages 5-38 to 5-40. Definitely no mention of magnets.

Made a note in my FSM in case I am ever in there.

Thanks.

2013 FJR1300A
1984 GPz750
Series III fairing removal:

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post #8 of 9 (permalink) Old 05-15-2019, 08:54 PM
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Look at exploded view. The Magnets are contained (epoxied in permanently) inside the starter motor Yoke (cylinder), and the last step in the assembly section is to align the marks on the yoke with the marks on the front and rear housings. If you're off by 90 degrees the starter will run backwards and the yoke's on you.
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Ray
Keep yer stick on the ice....
2014 FJR1300A - Root Beer
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post #9 of 9 (permalink) Old 05-17-2019, 05:51 PM
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Starter motor

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Originally Posted by RaYzerman View Post
Very odd for starter clutch to fail or even wear out...

Funny story, on my project bike I had opened up the starter and put it back together with the magnets rotated 90 degrees. Installed starter, all it would do is spin... freakin' thing was running backwards freewheeling the starter clutch. Off come the TB's, out with the starter, fixed it, reinstalled.. all good. Next time I'll know to note position of the magnets, LOL.



Always scribe mark the outer casings and end plates ,to ensure correct orientation on rebuild. Saves hassle and reverse spinning.
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