CB300F maintenance - Honda CBR 300 Forum
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post #1 of 75 Old 09-29-2014, 06:56 PM Thread Starter
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CB300F maintenance

A couple of things to watch for in a new CB300F. First, the chain stretches quickly. My chain was in specs when I took delivery and out of specs...actually loose 40 miles later so you will need to adjust the chain very soon. Secondly, that oil filter is tiny. Maybe too small. I changed the oil today for the first time at 165 miles and the oil was dark and nasty and the filter was full of gunk. I don't think I would wait until 600 miles to perform the first oil and filter change!
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post #2 of 75 Old 09-30-2014, 07:05 AM
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I thought the oil filter was small too but it is not an external filter so the size is not a big factor. No matter what the size of an internal filter it is still inside the engine so it incapable of adding to the oil capacity thus no additional cooling like you could do with a larger filter if it was an external filter as on a car. In the past most bikes just had a small metal screen and no paper filter at all and that was just fine.
My oil looked just a little darker than brand new after 500 miles and I have adjusted the chain slack a couple times in 800 miles too.
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post #3 of 75 Old 10-01-2014, 07:24 PM
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What oil filter are you guys using? What's the part number for it?
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post #4 of 75 Old 10-01-2014, 07:33 PM
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Originally Posted by MatteBlack View Post
What oil filter are you guys using? What's the part number for it?


I used OEM Honda filter PN#15410-KYJ-901, it was $4 and some change at the dealer.
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post #5 of 75 Old 10-02-2014, 10:11 AM
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My oil was fairly dirty. You can see flecks of metal in the oil. I changed it a little late (750 miles). Hopefully not a major issue. Will keep an eye on it this time around as well.
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post #6 of 75 Old 10-02-2014, 01:08 PM Thread Starter
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How you break-in your bike determines how dark and nasty the oil will look at any particular mileage up to 600 miles. If you do a hard break-in, it will be quite dirty, even at 100 miles. Mine was quite dark and had shiny particles of metal in it. The filter was full of gunk as well...at 165 miles. When I say hard break-in, I mean I warm the bike up thoroughly by riding 10 min. or so, then I accelerate in 2nd or 3rd gear up to redline and immediately let off the throttle completely and let the bike slow back down. The gear doesn't matter but if you do 2nd or 3rd with this bike, you won't likely be speeding too much at red line. You could do it in 1st gear, but 1st gear is harder to control. You then repeat this several times. In addition you go up and down the gears varying the rpms dramatically. You don't even have to speed necessarily or accelerate fast to break-in this way. I can't say it's better or worse, but it is faster.


I use Rotella T6 in all my motorcycles and have for years. It is full synthetic 5W40 and carries the JASO MA rating. Although not specifically formulated for motorcycles, it meets the specs. Available at Walmart for $22 a gallon, cheaper if on sale. There is one theory that you shouldn't go to full synthetic until 1000 miles or more, but some motorcycles come with full synthetic...bikes like the RSV-4, Tuono, Vespa, even the small Sportcity scooters come with full synthetic AGIP 5W40. My Triumph Street Triple R came with full synthetic and so did my Prius V and Honda Civic, so many cars and motorcycles come with full synthetic.
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post #7 of 75 Old 10-02-2014, 02:31 PM
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Originally Posted by AJ Nin View Post
How you break-in your bike determines how dark and nasty the oil will look at any particular mileage up to 600 miles. If you do a hard break-in, it will be quite dirty, even at 100 miles. Mine was quite dark and had shiny particles of metal in it. The filter was full of gunk as well...at 165 miles. When I say hard break-in, I mean I warm the bike up thoroughly by riding 10 min. or so, then I accelerate in 2nd or 3rd gear up to redline and immediately let off the throttle completely and let the bike slow back down. The gear doesn't matter but if you do 2nd or 3rd with this bike, you won't likely be speeding too much at red line. You could do it in 1st gear, but 1st gear is harder to control. You then repeat this several times. In addition you go up and down the gears varying the rpms dramatically. You don't even have to speed necessarily or accelerate fast to break-in this way. I can't say it's better or worse, but it is faster.


I use Rotella T6 in all my motorcycles and have for years. It is full synthetic 5W40 and carries the JASO MA rating. Although not specifically formulated for motorcycles, it meets the specs. Available at Walmart for $22 a gallon, cheaper if on sale. There is one theory that you shouldn't go to full synthetic until 1000 miles or more, but some motorcycles come with full synthetic...bikes like the RSV-4, Tuono, Vespa, even the small Sportcity scooters come with full synthetic AGIP 5W40. My Triumph Street Triple R came with full synthetic and so did my Prius V and Honda Civic, so many cars and motorcycles come with full synthetic.
Makes sense. I had a few long trips at 70+mph 7-8000 RPM which prob explains things.
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post #8 of 75 Old 10-02-2014, 05:33 PM
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Any idea if the oil that comes with our bikes have a specially blended oil for the break in process?
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post #9 of 75 Old 10-03-2014, 05:27 PM Thread Starter
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I think they use the same oil that they would put in at 600 miles, Yamalube is what came in my bike and it's also what they would use at the dealer. It's good oil of course and it is a semi-synthetic oil.
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post #10 of 75 Old 10-03-2014, 05:52 PM Thread Starter
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I did it again!


A month or so ago, I rode my electric motorcycle over to Hobby Lobby and bought a small watercolor paint brush. I put it in the storage area which is where the gas tank would be on a gas bike, then zipped the storage area about 75% shut. Soon as I got home, I unzipped the storage area...my glasses and phone were there but not the bag with the brush. It had somehow caught the wind and blew out of the tiny slit where I hadn't zipped the unit completely closed.


Anyway I did it again today. This time I rode the CB300F over to the Honda dealer and bought an oil filter gasket. $4 or so. I put it in my sweatshirt patch pocket and buttoned it. Got home and the shirt was unbuttoned and the gasket gone. I bought a crush washer too, but that was still in there. You would think I would notice stuff flying by my face when it flies out, but I didn't. Oh well. So then I said heck I'll just ride over to the other Honda dealership being to embarrassed to go back to the first dealer. Unfortunately, the 2nd dealer didn't have one in stock. It does look like they are readily available online though since it's the same gasket that fits the CBR250R.... part no.15412-KYJ-901. Besides, I've already re-used it once with my first oil change and if it doesn't get stuck and tear, I'll reuse it again for the next oil change. I just like to have extra parts handy just in case.

Last edited by AJ Nin; 10-03-2014 at 05:55 PM.
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