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Discussion Starter #1
Hello, it's my first time posting here since i'm new to riding etc. So i just bougt a 2014 exc wich had the top end rebuild not lang ago, great buy good price. Only thing is it came with the bendix out, so i watched some videos and installed is myself, its in good and everything fits, so now i press the e button and hope for the best but nothing. So i connect my battery to a charger and its dead, well okay no problem i go to a friend and try a battery from him, now i have that battery in and when i crank it it just makes the noise of the motor turning over but it doesn't hook, and after 5 sec it runs the battery flat. What could be the issue, if you need more information i'll be happy to deliver.
 

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Welcome to forum.
I assume you mean a XC300 as there is no 2014 EXC300. Have you seen the motor running?
  • Do you have spark? Take plug out, put on cylinder so plug gets earthed, press start button/use kick start and look for spark. If no spark replace spark plug with new one and try again.
  • Does motor get petrol? (Is spark plug wet with petrol?)
  • If you have spark and plug gets wet with petrol, try to spray some Ether down the plug hole, refit spark plug and try kick start again. Did bike try to start?

Come back and tell us what happened and we go from there.
 

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Does your motor start when using kick starter? If you kill your battery in 5 seconds your battery is defective or your starter is defective. Good battery and starter will crank that sucker for 60 seconds. Be sure to find Slavens Racing and study their instructional video for proper shim set up for starter gears. Probably a good idea to load test your battery and perform amperage draw test on starter. This can help determine which is defective. Report back if needed for assistance. Good luck
 

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Discussion Starter #4
Does your motor start when using kick starter? If you kill your battery in 5 seconds your battery is defective or your starter is defective. Good battery and starter will crank that sucker for 60 seconds. Be sure to find Slavens Racing and study their instructional video for proper shim set up for starter gears. Probably a good idea to load test your battery and perform amperage draw test on starter. This can help determine which is defective. Report back if needed for assistance. Good luck
Yes is starts fine with 2 kicks, i charged the battery overnight today so when i'm home i can check if it works, i will reply once back. I will look into what you are saying here and check in with some more experienced friends to jump in and help. thank you very much for your reply
 

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Discussion Starter #5
Welcome to forum.
I assume you mean a XC300 as there is no 2014 EXC300. Have you seen the motor running?
  • Do you have spark? Take plug out, put on cylinder so plug gets earthed, press start button/use kick start and look for spark. If no spark replace spark plug with new one and try again.
  • Does motor get petrol? (Is spark plug wet with petrol?)
  • If you have spark and plug gets wet with petrol, try to spray some Ether down the plug hole, refit spark plug and try kick start again. Did bike try to start?

Come back and tell us what happened and we go from there.
I live in europe, but i will check back once i did what you suggested
 

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I live in europe, but i will check back once i did what you suggested
As you have already replied to @augiedoggie's question and told us that the bike starts well with the kick starter, I support his suggestion regarding a possible poor battery or a possible issue with the the start motor. Also make sure that the battery charging circuit is working when the motor is running, because if that is not the case then the battery (even a new one) will soon run out of power again and you are back to kick starting the bike.
 

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Discussion Starter #7
Does your motor start when using kick starter? If you kill your battery in 5 seconds your battery is defective or your starter is defective. Good battery and starter will crank that sucker for 60 seconds. Be sure to find Slavens Racing and study their instructional video for proper shim set up for starter gears. Probably a good idea to load test your battery and perform amperage draw test on starter. This can help determine which is defective. Report back if needed for assistance. Good luck
The starter and the battery both have enough power but it looks like the starter motor or either the bendix turns the wrong way, the starter motor turns cw when it should turn ccw, i am here with a mechanic now and thats as far as we have gotten till this moment, any suggestions?
 

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Too obvious... but worth asking: Battery connected wrong way around??? Or Starter Motor connected wrong way around??
 

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Good catch! I have found reverse rotation starters before. Very unusual and frustrating. Could be wrong starter or incorrectly wound or incorrectly assembled starter. Reversed Starter poles or end plate can reverse rotation .
 

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Discussion Starter #10
Too obvious... but worth asking: Battery connected wrong way around??? Or Starter Motor connected wrong way around??
The starter only has a positive connection and grounds from rhe bike so thats not the issue, we took apart the start just now and brushed it up and somehow someway its spinning the right way around now. Now we are looking into if the battery can handle it because it still does not turn the motor over but it connects to the bendix etc so we are a step further
 

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Discussion Starter #11
Good catch! I have found reverse rotation starters before. Very unusual and frustrating. Could be wrong starter or incorrectly wound or incorrectly assembled starter. Reversed Starter poles or end plate can reverse rotation .
Yes indeed very frustrating, i am charging the battery now, will check back once it's full and i'll update you all with what's the status. Thanks in advance for your and evryone's replies
 

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Discussion Starter #12
New 4ah ytx5l-bs battery fully charged and this is what it does:
I called some mx company's and they told me to get a ytx7l-bs 6ah. Now could it really be that the battery is just not strong enough wich is weird because the manual states an even lower Ah battery, or is there something wrong with the starter motor. I jump started it with my car and it turns over not immediately but after 2 or 3 times of stuttering
 

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A load test on battery will confirm its condition. My 6ah battery will crank my 250 easily. Voltage drop test and amperage draw on starter will test starter for you. The aftermarket starters for those do not last more than a year or so. I get 1-2 years from a$50 ebay starter
 

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Discussion Starter #14
A load test on battery will confirm its condition. My 6ah battery will crank my 250 easily. Voltage drop test and amperage draw on starter will test starter for you. The aftermarket starters for those do not last more than a year or so. I get 1-2 years from a$50 ebay starter
I haven't yet done the amperage draw, what i did do was connext the starter on it's on to the motor battery with jumpercables and it spins like a mad man. Its just looks like when it is in the case it doesn't get enough juice. I will let you know once i have done an amperage draw if i find out how :)
 

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I haven't yet done the amperage draw, what i did do was connext the starter on it's on to the motor battery with jumpercables and it spins like a mad man. Its just looks like when it is in the case it doesn't get enough juice. I will let you know once i have done an amperage draw if i find out how :)
Is that with starter still fitted to motor so it cranks over the motor??
 

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Discussion Starter #16
Is that with starter still fitted to motor so it cranks over the motor??
Disconnected from the motor, i tried jumping it straight from the battery while everything was connected but not going to lie the sparks so close to the engine etc got the best of me and i couldn't belive that what i was doing was good for the starter when it was all connected
 

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Disconnected from the motor, i tried jumping it straight from the battery while everything was connected but not going to lie the sparks so close to the engine etc got the best of me and i couldn't belive that what i was doing was good for the starter when it was all connected
OK. I just wondered if you somehow have a voltage drop from battery to starter motor when you press starter button and all is connected? (Possibly in starter relay)
 

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Discussion Starter #18
OK. I just wondered if you somehow have a voltage drop from battery to starter motor when you press starter button and all is connected? (Possibly in starter relay)
Yeah i am going to check the relay when i am home. Just bought an aftermarket starter yesterday and i put it in, battery was half full, rode the bike for a while and pressed the starter button but it srill wouldn't turn over.
 

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Try to bypass the relay (use wire instead of the relay) and check if that makes the starter motor run better. The only thing the relay is supposed to do is to connect +12V to the starter motor. So if the starter motor runs well when you connect it straight to the battery's +12V then the relay is faulty. But if you can only get the starter motor to run well when you connect a wire straight from the battery to it, then you have an issue in the wiring on the bike.
 

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Discussion Starter #20
Try to bypass the relay (use wire instead of the relay) and check if that makes the starter motor run better. The only thing the relay is supposed to do is to connect +12V to the starter motor. So if the starter motor runs well when you connect it straight to the battery's +12V then the relay is faulty. But if you can only get the starter motor to run well when you connect a wire straight from the battery to it, then you have an issue in the wiring on the bike.
Can i try jumping the relay with a screwdriver?
 
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