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Post by smorkle on Jul 14, 2009 19:22:10 GMT -5
how do u make a rotel mc 250 go faster Have you tried turning the throttle? |
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botek6
New Puppy Dawg
Posts: 2
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Post by botek6 on Aug 5, 2009 14:38:31 GMT -5
I'm hoping someone can help me locate a rear gear set for my Shenke mc54 250b scooter. I currently have it in the shop and I think my mechanic is getting impatient with me. I have tried all kinds of sites but have yet to find a company that sells the rear gears separately. Heeeelp Pleeeeeaaase!
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Post by smorkle on Aug 5, 2009 18:17:47 GMT -5
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Post by damobear on Sept 19, 2009 18:57:19 GMT -5
Dont surpose anyone has a manual on the CF172MM engine ? and how the gearbox and transfer box all work ?
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Post by cruiser66 on Sept 19, 2009 21:13:33 GMT -5
Here's the closest I have found for free: bill.laudeman.com/helix/manual/index.htmlThe engine info is essentially the same as the 172MM. The 172 uses a standard CVT setup with 6 weights in the variator. It is similar to a 150cc setup. 66 |
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Post by damobear on Sept 21, 2009 11:08:23 GMT -5
Thanks, think it maybe the gearbox that is giving me grief, although when i looked everything in there looked brand new, and i replaced the cogs in the transfer box as they were damaged, so i thought that was the prob, could it be the clutch ?
to give u some idea ................http://www.youtube.com/watch?v=Z_mBrV_60RI
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Post by DaveR on Sept 21, 2009 15:45:49 GMT -5
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tomcsr
New Puppy Dawg
Posts: 1
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Post by tomcsr on Oct 10, 2009 15:28:24 GMT -5
hi i have a jmstar 250cc or yy250 t which i ordered on line. it was suppost to be red and it turned out to be burgunty it was suppost to have kick start and electric start but it just has electric. and this brings on the problem... has anybody have one of these that the battery woun't stay charged. i have had the stater and the battery replased .it runs great once its warm up but if i ride it about 20 miles the darn thing woun't restart cause it just isn't putting out enough current to keep it charged. also is there any where on the web i can down load an enlish manual? thanks
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Post by cruiser66 on Oct 22, 2009 22:53:52 GMT -5
Welcome to SD, tomcsr. I'm surprised no one has tried to answer your question. My regulator/rectifier was defective from the factory on my YY250T. Measured less than 13.0 volts at the battery with the engine running. You should have at least 13.5 volts with the engine running. If you have a multimeter, you can check the connector with the yellow wires that attaches to the regulator. Measure the pin resistance of the connector that comes from the engine. You should read about .6 ohms between the pins. All pins should give the same results regardless of how you pair them. There should be no resistance reading between these pins and ground (engine or battery ground). This will determine if your stator is good. Make sure that the wires in the regulator connectors are crimped good and not loose in the connector. I ended up getting this regulator from eBay: cgi.ebay.com/ebaymotors/250cc-Gokart-Voltage-Regulator-Rectifier-Go-Kart_W0QQcmdZViewItemQQitemZ180422589531QQptZMotorcyclesQ5fPartsQ5fAccessoriesLess than $20 delivered and has been working good for a couple of weeks. Good to have as a spare even if your original regulator is good. I have seen these units go for as high as $160.  The regulator is located just above the muffler under the fender cover on my scoot. It's the large heat sink device.  66 |
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Post by bamaguy on Jan 27, 2010 12:30:28 GMT -5
I have a Roketa 250 that has 1700 miles on it with the Linhai style engine and want to change the final drive gear oil. My manual states to use a SAE10w-30/SE oil. Isn't that just plain motor oil? I had planned on using a Synthetic 75/90 gear oil for this. What do you think is the correct product to use? Oh, by the way I just changed the engine oil & used Rotella T6 synthetic 5w-40 heavy duty oil. Would this same oil work in the final drive ? Thanks for your input!!!!!!
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Post by cruiser66 on Jan 27, 2010 22:52:42 GMT -5
Hi bamaguy,
I'm using the 5W-40 Rotella synthetic in the engine and Mobil 1 synthetic 75/90 gear oil in the transmission in both my scoots. Using the 5W-40 in place of the recommended 10W-30 engine oil in the transmission would work good also because the synthetics have superior anti-shear characteristics.
66
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Post by badbrucelee on Mar 31, 2010 8:19:04 GMT -5
anyone know where i can get my linhai 300 (275cc) 2008 model year repair and/ or parts manual from? also was wondering if yamaha services the linhai scoots since they are involved with linhai? thanks
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Post by bradshawm on May 4, 2010 12:01:18 GMT -5
At the beginning of this thread there were two Chinese 250cc engines mentioned. I had a dealer tell me that there is a new 3rd brand on the market. Is this one of the two mentioned earlier (and if so which), or is this the new brand on the market?
Roketa MC95-250
250CC,WATER COOLED,4 STROKE,
Engine brand: JINLONG
Displacement: 250cc
Cooling: WATER COOLED
Max horsepower: 13HP / 9.5KW/6000R/MIN
Max torque: 10KW/6500R/MIN
Bore*stroke: 72MM X 60MM
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Post by chyder on May 4, 2010 20:35:48 GMT -5
At the beginning of this thread there were two Chinese 250cc engines mentioned. I had a dealer tell me that there is a new 3rd brand on the market. Is this one of the two mentioned earlier (and if so which), or is this the new brand on the market? Roketa MC95-250 250CC,WATER COOLED,4 STROKE, Engine brand: JINLONG Displacement: 250cc Cooling: WATER COOLED Max horsepower: 13HP / 9.5KW/6000R/MIN Max torque: 10KW/6500R/MIN Bore*stroke: 72MM X 60MM This is a 244cc honda clone style motor. Just a different manufacturer. Could have some mods, but I doubt they are performance related if it does. |
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Post by secbyte on May 8, 2010 19:09:07 GMT -5
Anyone notice that the images are missing from the first couple of posts?
That makes identifying which engine you have tough.
Can anyone fix this?
George
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dsmith
New Puppy Dawg
Posts: 4 
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Post by dsmith on May 11, 2010 20:12:41 GMT -5
Does anyone know what the 2 hose nipples on the left side of the carb (PD30J) are for?? It looks like there is suppose to be a hose of some sort connected to each. MC54 250B
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Post by "Big Guy" on May 11, 2010 20:25:17 GMT -5
It is used in cold climates to warm the carb. It is a water system that is rarely used on clones. The water is tapped from the radiator; the top is the intake and the bottom is the return. On 99.9% of Chinese scooters there is just a short looped piece of vac hose from one to the other.
-Rich
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Post by JR on May 11, 2010 23:26:47 GMT -5
Anyone notice that the images are missing from the first couple of posts? That makes identifying which engine you have tough. Can anyone fix this? George  |
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Post by redleg2211 on Jun 8, 2010 11:33:54 GMT -5
i have a mp-250a-jcl with 3709 miles.can you guide me in the maintance of my bike?
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Post by ajaxdog on Jun 10, 2010 8:06:51 GMT -5
Am looking at a 300cc scoot sold by "Empire Super Sports". This scoot is made by "Pacific Rim International Co." Anybody know anything about the distributor or the maker? This scoot looks as good as the Aeolus and cost much less. Any information would be most appreciated.
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Post by fairweasel2323 on Jul 29, 2010 23:53:50 GMT -5
my 250 Bali has the 244cc Honda clone and has the 12in wheel in front and 10inch in back but it has all disc brakes as my Wildfire has drum brakes on rear and I didnt special order them guess I just lucked out way easier to change I hope lol the Wildfires shoes were a pain
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kitty
Junior Dawg
Posts: 10
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Post by kitty on Oct 20, 2010 16:17:51 GMT -5
Which is best the 250cc chinese scooter??, the one that gives the least problems. I'm buying another scoot in the spring.
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Post by bcjost on Apr 13, 2011 19:31:50 GMT -5
JIM FOR YOUR INFO THERE ARE 3 CHINESE'S SCOOTER WITH 12' TIRES AND REAR DISK BRAKES, ROKETA MY54-250 (LJ4) FMS 250 ROADSTER AND THE MYY250 ALL HAVE THE CFMOTO 244CC ENGINE THERE MAY BE MORE. I HAVE SOLD AND SERVICED ALL THREE. THE ROKETA MC54B-250, ROKETA CLAMS THAT IT IS A 250CC AND THE MEDAL NAME PLATE SUPPORTS THAT I STILL THINK IT'S A 249 MAY BE A 257CC DON'T THINK THEY WOULDN'T SAY IT WASH A 25OCC AS A 257CC WOULD SELL BETTER, WWW.BJSPRICEBUSTER.COMBJ  |
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Post by richardthescooter1 on May 18, 2011 10:00:38 GMT -5
I have an ongoing problem with my 250cc roketa scooter, in a 5 mile trip it shut off three times, each time it seems to start missing, after pulling off, it takes a few mins it will start again, but it doesn't do it all the time, it seems like it takes fits, can anyone help?
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Post by ce on May 18, 2011 16:19:53 GMT -5
Check the fuse that's next to the battery for a poor connection., or even the battery connections.
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Post by eldoryder on May 22, 2011 8:47:48 GMT -5
Can anyone tell me which 250cc four-stroke air-cooled V-twin motor is used on the so-called "Road Warrior Trike Chopper" sold in the USA by "IceBear" and several other resellers? I have one on order, and will certainly be interested in performance mods, once the warranty has run out.
It would be nice to know which manufacturer actually makes these engines. I have been led to believe it may be LIFAN.
Someone please correct me if I am wrong.
Newby signing in.
Mike in Nacogdoches, TX
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Post by hgallardo on Jun 1, 2011 15:51:13 GMT -5
Hello, by reading on this board i found a lot info on scooters, but no one talks about repairing a head gasket, or the motor, i have recently discover that my Roketa 250 ccs has a blown head gasket and i don't know what to do, meaning engine replacement or repair the problem, can anybody provide me with info, suggestions or what my options are; my question is can the water cooler engine be replaced by a air cooler engine? i'll appreciated any info coming from you guys....Thank you!!!
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Post by rowdyc on Jun 3, 2011 11:12:27 GMT -5
The reason there is seldom talk about engine repair is because it's a Chinese engine. If it needs repairs, its time to replace the scooter. To begin with, Chinese engines are made of blended metals that are not as strong as other scooter engines (Japanese, Italian, & etc.). Even after repair, additional problems will adventually happen.
Sell the scoot for parts and try to get another scooter.
Unless the work can be done ch
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Post by surferjoe1992 on Jun 21, 2011 21:18:03 GMT -5
I have a quick question for you guys. I've been taking auto classes for three years, so I'm fairly well versed as far as cars work. I'm a newbie to bikes and scooters. I bought a 2008 Jonway it has the 244cc CVT engine based on the Honda CN250 Helix. I'm planning on changing the oil this week... I just picked it up Saturday. So the oil I was going to get is Mobile 1 10w-40... is there a better quality oil to pick up? and do I need an oil filter? if so which one would the 244 cc engine take? Thank you in advance for any help and thoughts. I really appreciate having such a great forum at hand!
- Newbie Joe
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Post by frigginjoe on Jul 1, 2011 15:12:58 GMT -5
No oil filter is involved. 10w30 and 40 are popular choices for at least the break-in period, then (controversy) synthetic. More often than not I see people recommending synthetic after the break-in, but there are a few detractors to that.
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