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  #1  
Old 03-03-2011, 07:48 PM
Weekend Warrior
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Default Baja QJ 250 ATV Gearbox

Hello everyone, I have been trying to get this part for over 6 months!

My reverse gear box went out on my atv, the shaft melted and cracked the case and froze everything. It took me weeks to find a supplier that supposedly carried the parts "Parts Yahoo" but after 6 months waiting and having them tell me that it'll only be a few more weeks I gave up and demanded my money back. They still haven't given that back either! I just want to get my ATV working again, I need to find a dealer that has the gear box case or need to change stuff around to get this thing to work atleast forwards...

Now for possible solutions...

-Find another gearbox/transmission assembly that fits onto the engine.
this varies from reverse axle gearboxes to finding something that bolts onto the engine. I beleive the engine is made by ""jianshe" I read once. Model maybe QJ169mm,

-Attach a gear to the output shaft so that I have forward gear
Could find the proper sprocket buy/make a sleeve that fits over the output sprocket and bolt a chain cog onto it. That will deliver power to the rear wheels.

-Find a new or used part to replace my own.
Hope that some insightful member knows where to get these parts.

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Engine maybe made by Jianshe or Qianjiang Hello everyone, I have been trying to get this part for over 6 months!

My reverse gear box went out on my atv, the shaft melted and cracked the case and froze everything. It took me weeks to find a supplier that supposedly carried the parts "Parts Yahoo" but after 6 months waiting and having them tell me that it'll only be a few more weeks I gave up and demanded my money back. They still haven't given that back either! I just want to get my ATV working again, I need to find a dealer that has the gear box case or need to change stuff around to get this thing to work atleast forwards...

Now for possible solutions...

-Find another gearbox/transmission assembly that fits onto the engine.
this varies from reverse axle gearboxes to finding something that bolts onto the engine. I beleive the engine is made by ""jianshe" I read once. Model maybe QJ169mm,

-Attach a gear to the output shaft so that I have forward gear
Could find the proper sprocket buy/make a sleeve that fits over the output sprocket and bolt a chain cog onto it. That will deliver power to the rear wheels.

-Find a new or used part to replace my own.
Hope that some insightful member knows where to get these parts.


Engine maybe made by Jianshe or Qianjiang http://www.qjiang.com.cn/
Engine Model maybe: QJ169mm
ATV Model: QJ 250 ATV (qj250)
Problem gearbox (transmission) failure. Very common problem with this ATV.

They say the engine looks like a Yamaha grizzly but that uses a completely different transmission.




Engine Model maybe: QJ169mm
ATV Model: QJ 250 ATV (qj250)
Problem gearbox (transmission) failure. Very common problem with this ATV.

Baja Motorsports Baja Wilderness 250 (the older one)

PS: Never ever buy a baja motorsports product, they'll stop supporting it and leave you in the lurch. Never buy Qianjiang products (they'll fail and you wont even get a response to any email you send them) Never use a site called www.partsyahoo.com they'll lie to you for months on end and not refund your money.
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  #2  
Old 03-16-2011, 09:46 AM
Weekend Warrior
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Default

hmm i just picked up a baja wilderness with the same issue.
i was thinkin the same about just setting it up with forward only.
do you think itd work?
i was actually hoping to find a used gear box but im guessing its not goin to be easy to come by
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  #3  
Old 04-16-2011, 06:11 PM
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Grind the damage off smooth, get t6 aluminum rod, cut a piece off, drill the inside diameter for your shaft size and weld in place.
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  #4  
Old 04-16-2011, 06:12 PM
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Parts Yahoo are CROOKED, report them to your bank. Some banks will refund you the money and take it from their bank account. Best thing to do is not buy anything from there, don't let crooked sellers get sales.
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  #5  
Old 04-16-2011, 06:15 PM
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To get forward working you'll need to find the correct "Sprocket Shaft Extender" find some way to attach it to the output shaft so it doesn't slide, attach the correct sprocket and done. There maybe too much stress to work well, however there might be ways to overcome that.

IF you use this method please post the links, or specs to the parts to make this setup work Im sure alot of us want to know.
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  #6  
Old 04-17-2011, 07:43 PM
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does anybody know the correct belt for this atv?
i never received one from th eguy i bought it from
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  #7  
Old 04-27-2011, 03:24 PM
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Found where they sell these, its EUROPE, its called KEEWAY, they have a few dealers in the USA (they just sell scooters however).

Model: ATV250
KEEWAY COMMANDO

Trying to see if I can get parts over here.

More info:

Motor is a Yamaha Scooter Motor, made by Loncin for Yamaha. ITS A SCOOTER MOTOR! The back part where the transmission goes is actually where the rear wheel of the scooter normally goes. They just slapped a transmission onto it instead and converted it for a ATV. This makes the engine easy to find parts for an the transmission very hard to find parts for.
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  #8  
Old 05-11-2011, 01:05 PM
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found the gearbox case
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  #9  
Old 05-11-2011, 02:02 PM
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Now you can't expect to post on here that you found your part and thats that!!! You have to tell us more. pict's of the new part...?
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  #10  
Old 06-12-2012, 07:23 PM
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can anybody with this atv take a picture of the plug going into the cdi box showing what color wires go where, I desperately need it, if possible please send it to my email which is rcpilot4@gmail.com
Thanks,
Cole
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Old 06-12-2012, 07:23 PM
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Tags
250, 250cc, atv, atvs, baja, box, chinese, gear, gearbox, made, problems, qianjiang, qj, qj169mm, qj250, wilderness



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