Dong Fang DF 250 RTB Bobber Information

**barnone** · 05-19-2014, 12:27 AM

Originally Posted by ben2go

Something must have changed.I thought all of them had a cable run to a drive unit on the front wheel.

ben2go,
Post 1461.
Looks like we got into his speedometer drive question back in 2011.

So the 2010 has an electronic speedometer.
12-08-2011, 03:39 PM

The DF has an electronic speedometer with the pickup off the front wheel.

**barnone** · 05-19-2014, 01:11 AM

Senior moment.

**Woody87** · 05-19-2014, 03:19 AM

I think it might be some sort of wiring issue. If I start the bike, and use the killswitch to stop the engine, the speedo still wont register until I unplug the speed sensor cable, or turn the bike off and back on.

**axa** · 05-20-2014, 04:55 AM

ok horde, i need some help finding some push rods for this engine rebuild...
strange enough they are 153mm, 7mm shaft, 6mm ball and i cant find them (yet)
They're not the common 148mm rods, i think those are for the smaller stroke engines.

but i did find this...
http://parts.powersportsbest.com/ind...-36-mc-25.html

$475 is the best price I've ever seen on these 167fmm on the and ive looked ALLOT.
looks like the lifan version on the ccw with the kick stand to boot, wish i had a kick.

**axa** · 05-20-2014, 05:22 AM

Originally Posted by barnone

http://www.alibaba.com/product-detai...632055351.html

16 HP?
Awaiting reply from supplier in China, probably not EPA so no go.

Here you go, perhaps stocked in the US..?
It seems to have reverse,
but i wouldn't even care if it weren't a bit pricey

http://parts.powersportsbest.com/ind...ke-engine.html

**barnone** · 05-20-2014, 10:03 PM

Originally Posted by axa

Here you go, perhaps stocked in the US..?
i wouldn't even care if it weren't a bit pricey

http://parts.powersportsbest.com/ind...ke-engine.html

I've found some 300cc ATV engines but they were shaft drive. That one has reverse but looks to be chain drive. Overhead cam? Looks nice for the DF.

Pretty sure it is overhead cam. Dual exhaust valves or just dual exhaust ports.

img_3049.jpg

**bowtiewagon** · 05-21-2014, 12:03 AM

Well guys, I know I am not the all around motorcycle mechanic, but I try.seems my starter was not the problem. here is the scenerio.Maybe someone out there would be able to help me diagnose my problem.
Starter does what it is supposed to do, it turns the gears,trouble is she will not turn over.All i get is a starter whineing and a couple long runs on the starter and she seems to want to catch, but does not.I have spark I checked that. I thought it might be the cut off switch at the bars, feels like it wont let her turn over, but the switch is new, and is in the proper position.I wish I had a kick starter on it, then maybe I could find out for sure what it truly may be.I tried to push her in second gear and jump her, but no luck there either.
Anyone have any clues? I am at a loss at this point.maybe I just need someone to throw out a few questions for me to check out what the answer is.Always better with a second set of eyes so to speak.
Needless to say, i am quite miseable at the moment.I really love riding, and with her down, I am just sucking it big time.

**birdmove** · 05-21-2014, 12:24 AM

Your engine isn't locked up is it? There should be an access hole on the left side of the outer engine cover where you can find a big nut. You should be able to turn it over with that to make sure it's not locked up.

**barnone** · 05-21-2014, 01:03 AM

Originally Posted by bowtiewagon

Well guys, I know I am not the all around motorcycle mechanic, but I try.seems my starter was not the problem. here is the scenerio.Maybe someone out there would be able to help me diagnose my problem.
Starter does what it is supposed to do, it turns the gears,trouble is she will not turn over.All i get is a starter whineing and a couple long runs on the starter and she seems to want to catch, but does not.I have spark I checked that. I thought it might be the cut off switch at the bars, feels like it wont let her turn over, but the switch is new, and is in the proper position.I wish I had a kick starter on it, then maybe I could find out for sure what it truly may be.I tried to push her in second gear and jump her, but no luck there either.
Anyone have any clues? I am at a loss at this point.maybe I just need someone to throw out a few questions for me to check out what the answer is.Always better with a second set of eyes so to speak.
Needless to say, i am quite miseable at the moment.I really love riding, and with her down, I am just sucking it big time.

You say you are getting spark so the engine must be rotating when you use the starter, right?

If the starter is causing the engine to rotate why did you try to bump start your bike?
Also why did you get a new starter if the engine was rotating?

Are you are getting fuel in the engine? What does the spark plug look like?

**barnone** · 05-21-2014, 01:18 AM

Originally Posted by birdmove

Your engine isn't locked up is it? There should be an access hole on the left side of the outer engine cover where you can find a big nut. You should be able to turn it over with that to make sure it's not locked up.

Good point.image.jpg

Photo of nut birdmove was writing about. If you can turn it with a wrench then check valve adjustment while you are there to check for internal engine problems.
Procedure at https://docs.google.com/file/d/0ByFv.../edit?hl=en_US