Posts
62
Joined
7/9/2011
Location
CA
Edited Date/Time
6/1/2018 12:14am
I bought a 2018 CRF 250 for my daughter that has 3.1 hrs on it and it quit today. Battery seems to be stone dead. Swapped out my battery from my 2018 450 and it wont even turn the bike over. Anyone have any suggestions. At the first race of the year and have a $10000 paperweight sitting in the trailer now. A kickstarter would be nice right about now!
jumper the starter motor on the clutch side behind the number plate. by the relay where the power comes from the battery. You could just use a metal wrench and place it on both to "jumper" it.
if it tried to start , ur relay is bad or like our bike was. the harness has a fault in a wire.
The Shop
If that same battery will start the 450 its not the problem.
Like said before, that starter relay is the bridge between your battery and starter, if the resistance is to high you will not get full power (amps and voltage drops).
With that being said, check your main battery cables for corrosion and make sure they are snug tight.
Also... Troubleshooting hydraulic, pneumatic and electrical circuits can be frustrating when you get scatter brain, you can't look all around. You have to stop and think LINEAR, one thing at a time. That electrical system on that bike is very A to B, its not that bad bud.
1. Removed starter bench tested it , it worked fine.
2. Tested solenoid, worked fine.
3. checked all wires for cut or break. Entire wire harness was fine.
4. Removed valve cover to check decompression spring/system - it works fine
5. Used new battery - still no go, but turned over a smidge, battery works fine in my 450. Notice starter getting really hot - thought about improper ground. ran extra wire from battery ground to starter - works absolutely perfect - still curious, so I pulled the starter to check how it was grounded to the cases and noticed that paint overspray (in my opinion) was not allowing starter to ground properly. Cleaned bottom of starter off with file and put it back together and works great.
6. By the way Honda dealer was excellent throughout this and took care of everything - crap happens but dealer stood behind what they sold - even though this was an inconvenience I am a happy customer and my daughter has a bike that she can race this upcoming weekend. I hope this helps someone else down the road that may experience the same problem..
1. Kill switch goes bad pretty easily, bike runs then dies after a few seconds.
2. Clutch baskets break - you want to put a Hinson or rekluse in ASAP.
3. Head picks up on cam. Most likely due to lack of oil when starting. Once it’s picked up a small bit, it’s just a matter of time. You want to prime cam with oil when starting by running starter with kill switch pushed in to pump oil up.
4. Pull oem clutch fibers/steels/springs out and out And replace with Hinson stack, removing inside plate and judder spring. otherwise inside plate will break. This means splitting engine as it will block the one and only engine oil pump/passage.
5. Run 300ml extra oil
Pit Row
The wire that was bad in our 450 was a wire inside the wire harness going to the relay .
Touching the 2 terminals together bypassed that wire and started the bike.
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