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Starter After All?
#154666
09/22/23 10:52 AM
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Joined: Sep 2023
Posts: 9
joemama
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Junior Member
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OP
Junior Member
Joined: Sep 2023
Posts: 9 |
My daughter just got a 2009 XT250 w/ 31K miles. It came w/ a mostly dead battery so first piece of business was new one and battery tender. Had an aluminum plug over pilot screw so second item was to drill it and do 3 turns out mod, as well as good carb cleaning.
Runs great once it gets going (non-ethanol gas). Problem is that starter cranks slowly, at least to my ear, and drains battery very quickly. After short commutes, it has trouble starting again. So taught her to bump start.
When running, RR puts out 14.3 V so no problem there. I checked for parasitic draw using ammeter in series - almost 0 mV. Bought a DC clamp ammeter and checked red wire from starter relay to starter motor. With key on it draws 2 A. when cranking it draws 168 amps!!! Yuasa battery is only rated for 120 CCA so short in starter may be problem?
What say the gurus? Should I replace it? If so with which make? And what is process to take apart this rubik's cube of a bike?
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Re: Starter After All?
[Re: joemama]
#154667
09/22/23 03:19 PM
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Joined: Jan 2004
Posts: 6,621
Muniac
Platinum Member
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Platinum Member
Joined: Jan 2004
Posts: 6,621 |
I'd remove the starter, disassemble it and inspect the windings, bearings, drive and commutator. You should be able to spot problems visually. If the commutator has shorted bars that will cause excessive current draw and poor performance. Same for shorted field and armature windings. If the XT250 has a magneto style ignition like the XT225, cranking speed needs to be high enough to generate a hot spark.
Welcome to the site as a new USER. Enjoy and ride safely.
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Re: Starter After All?
[Re: joemama]
#154668
09/22/23 04:42 PM
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Joined: Jun 2013
Posts: 4,163
peejman
Platinum Member
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Platinum Member
Joined: Jun 2013
Posts: 4,163 |
The XT's battery is comparatively small, so repeated start attempts will drain it pretty quickly. That said, the amp draw you see tells me something is wrong. With the key just on, seems like there shouldn't be any amp draw to the starter unless there's a split somewhere downstream that's running the lights. 168 amps is way too high, should be half that at most.
This shall pass, be still and know. 2006 XT225, UNI filter, ProTaper bars, MSR handguards, SS front brake line, Shinko 241's.
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Re: Starter After All?
[Re: joemama]
#154670
09/22/23 06:40 PM
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Joined: Sep 2023
Posts: 9
joemama
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Junior Member
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OP
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Joined: Sep 2023
Posts: 9 |
One more thought, does the XT250 have a compression release/valve to make it easier to start? If that's stuck it might account for hard cranking.
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Re: Starter After All?
[Re: joemama]
#154675
09/25/23 03:17 PM
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Joined: Sep 2023
Posts: 9
joemama
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Junior Member
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OP
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Joined: Sep 2023
Posts: 9 |
No other wires spliced into starter lead - direct connection from relay. I guess I'll order new starter and start pulling exhaust and carb. Nuts are really rusted up on manifold - afraid to break studs. Will try Knock'er Loose and torch if needed.
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Re: Starter After All?
[Re: joemama]
#154677
09/25/23 08:02 PM
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Joined: Jun 2021
Posts: 87
Pumpguy
Junior Member
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Junior Member
Joined: Jun 2021
Posts: 87 |
A good penetrating oil for those rusted nuts is a 50/50 mix of ATF and Acetone. This causes a chemical reaction with the rust. Much better than PB Blaster, Liquid Wrench, etc.
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Re: Starter After All?
[Re: joemama]
#154680
09/28/23 07:11 PM
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Joined: Jan 2004
Posts: 6,621
Muniac
Platinum Member
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Platinum Member
Joined: Jan 2004
Posts: 6,621 |
If you've got bolts/screws run into aluminum female threads, proceed with caution. Galling and metal pickup can destroy the softer aluminum threads. I had this happen on one screw, exhaust side retainer ring. Needed to do a Helicoil repair which was tricky but restored the threads. Good luck and work safely.
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Re: Starter After All?
[Re: joemama]
#154681
09/28/23 09:13 PM
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Joined: Sep 2023
Posts: 9
joemama
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Thanks, there's always a worser, worse case! Starter ordered along w/ studs, nuts, and gasket. Might be a while before you hear back from me...
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Re: Starter After All?
[Re: joemama]
#154683
09/29/23 03:09 PM
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Joined: Aug 2008
Posts: 5,074
Az4x4
Platinum Member
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Platinum Member
Joined: Aug 2008
Posts: 5,074 |
Best of luck as you sort this problem out..
..I'd rather have questions I can't answer, than answers I can't question.. Dr. Phil
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Re: Starter After All?
[Re: joemama]
#154748
11/08/23 05:48 PM
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Joined: Sep 2023
Posts: 9
joemama
OP
Junior Member
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OP
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Joined: Sep 2023
Posts: 9 |
Tried MAPP gas torch but manifold nuts wouldn't budge. Had to take it to shop. Got it back 4 weeks and $300 later... Just in time for winter.
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Board Upgrade:
Board upgrade to V7.7.3 has been completed on Monday Feb 3rd 2020. Ride safely.
Enjoy the new software!
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