Coolster 125cc DB214S.. Dead

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T

Tig

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Hello. I just joined, so if I do something wrong please let me know.

A few months ago I purchased this bike: https://www.amazon.com/gp/product/B00EEJKR2O/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

A few weeks ago the front gear sprocket threw off the chain, and "blew-up" a lot of things. Now, the dirt bike currently does no run because a portion of the magneto or something along those lines got broken off when the chain came off. Since this sensor or whatever it might be is attached to the engine, I don't think it's fixable.

I am trying to find a direct fit engine for the bike on Amazon, and i'm not entire sure which engine would fit it. Also, I really want fully manual, rather then the current semi-auto. But I don't know if that is changeable.

Here are images of the engine with the gear cover off. Maybe if someone could tell me if this is easily fixable or what engine I need to replace it with. I really prefer if it's from amazon.
http://s4.postimg.org/qp1kg80n1/20151019_144242.jpg : Gear Sprocket
http://s21.postimg.org/ot54lbnvr/20151019_144627.jpg : The broken magneto thingy. (Does someone know what it is??)
View image: IMG 0561 Pic of the engine with the cover on.
http://s14.postimg.org/7m0ydw7lt/IMG_0562.jpg A image of the broken cover.

Thanks!!! PS: I hope it's not racist assuming this is Chinese. It's just some random off brand that I assumed is.
 

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liljohn_92 said:
welcome! where abouts are you from?

looks like youve just broken the pickup off the stator plate, this can be replaced easily with the right tools.

youll need a flywheel puller and a couple of basic tools.

heres the part you need to replace to get it going again.
70cc 90cc 110cc 125cc Magneto Stator Plate PIT PRO Dirt Bike ATV Quad Trail | eBay

youll probably also want to replace the side cover
Sprocket Cover Lifan Stator Magneto Engine Side Case 110 125 150cc PIT Bike MA | eBay
Click to expand...

Wow this is amazing. I'm from the us.

Will these items work instead? I trust amazon more then ebay, even though it's really the same seller base.

Amazon.com: Promax Engine Side Cover for 70cc 90 cc 110cc 125 cc Kick Start Dirt Bikes Pit Bike SSR Coolster Roketa: Automotive -- Cover
Amazon.com: IGNITION STATOR MAGNETO PLATE 125CC PIT BIKE XR50 SDG SSR 107 110 125 M IS01: Automotive -- Magneto Stator
http://www.amazon.com/Flywheel-Pull...id=1446505530&sr=1-1&keywords=flywheel+puller -- Flywheel puller

Thanks so much for your response. Also, you're positive it's only the Stator Plate that's broken?
 
Yeah you will need a new stator as the pickup has snapped off, and the flywheel tool.
Compare your's to how it should look.

$_35.JPG



The tool you linked is fine, i have a US made Motion Pro Flywheel Puller which have never failed.
The cheap china puller's can damage your engine


The damage caused to your engine was from an over stretched/loose chain.
The chains they are supplied with are very cheap, they stretch pretty quick and end up jumping a tooth or 2 on the front sprocket and wind themself's up in the stator cover cracking it and usually taking out the pick up as it smashes it off the stator plate.
Get yourself a new DID H/D chain, it'll cost you about $20-$30, and also grab some spray on chain oil too to keep it lubed.
The chain will be too long so you'll need to shorten it, count how many pin's (including the joiner link pin's) there are going through the link's, that's the length chain you need.
you can either buy a chain breaker tool, or use an angle grinder and grind the end of the pin off and punch it through
DID Standard Chain 420 x 120 Length - W-690-10120 - Sprockets & Chains - Pit Bike Chassis Parts - TBolt USA, LLC

Stator cover same as your original $14 inc delivery
Amazon.com: 1L ENGINE/STATOR/MOTOR COVER FOR CRF50 XR50 50 SDG SSR 110 125CC BLACK EC02SS: Automotive

Stator $15 inc delivery
Amazon.com: ATV Ignition Stator Magneto Plate: Automotive

Impact screwdriver to remove the 2x screw's that hold the stator to the engine case
Wallmart might be cheaper?
http://www.amazon.com/14-pc-Impact-...rds=impact+screwdriver&refinements=p_36:-1500

2X new high tensile M6 x 16mm countersunk screw's to replace the cheap china one's, (hold stator to engine)
Could get them from Walmart too
http://www.amazon.com/Bolt-Base-Ten...0&sr=1-2-catcorr&keywords=m6+x+16+countersunk
 
Last edited:
Thabks so much to the above reply. ( too large to quote )

I certainly want to e gentle with my engine. Which of these do you recommend for the puller? I am not sure how they work, so I don't know which is best. Amazon.com: 125cc engine stator puller

As for how to do all of this work, is there a simple video that you recommend? (I can google it, I'm just asking to see if you recommend one)

THANK YOU! You both saved me well over $200 for the new engine.
 
This is the one i have,
Amazon.com: Motion Pro 08-0026 Flywheel Puller M27X1.0 L.H External Thread: Automotive

You just undo the nut in the middle that hold's the flywheel onto the end of the crank
Then wind the big thread anticlockwise into the flywheel thread, once it's in as far as you can get it by hand hold the big nut with a wrench and turn the small centre bolt in
It will start to get tight then it will pop the flywheel off the crank

You dont alway's need the flywheel holding tool, fit your 14mm socket and ratchet onto the nut and hold it firm to the left
Then use a hammer and give it a firm tap down on the left side this should loosen the nut off the crank, and undo it and take it off

[video=youtube;M35exFdWdBk]https://www.youtube.com/watch?v=M35exFdWdBk[/video]
 
Basically you need a new side cover and a stator plate.

If you are very cheap person I have seen those snapped of pick up coils (without removing magneto) fixed (on cheap "good condition, like new" pitbikes for sale) by using car body sealant.
 
I have one more question for both of you.

I bought a horn: https://www.amazon.com/gp/product/B00029XGAU/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
and a control switch: https://www.amazon.com/gp/product/B008G4YMHY/ref=oh_aui_detailpage_o04_s01?ie=UTF8&psc=1

Is there any way to wire these things and power them? As well as some sort of compliant turn signals. Everything on this bike has different connectors. I realize there is no bat/alternator but maybe wire it from the stator (which generates electricity, right?)

Thanks again! The stator and other parts are ordered.
 
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