Mini quad 49cc - Pocket Bike Forum - Mini Bikes
 
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post #1 of 6 (permalink) Old 05-02-2020 Thread Starter
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Mini quad 49cc

Hi all new to the forum but I really could do with some help

I purchased a second hand hawkmoto 49cc mini quad bike for the kids to ride around on, when I checked it all over upon purchasing it fired up , ran and rode exactly how it should then after weeks of being in shed I couldn't get it to go and manage to get a brand new engine for it with carb. I put the new engine in and manage to get it to run for around a minute before cutting out and not being able to restart it. Fast forward two weeks later got it out disconnected a wire and first pull it runs with choke around halfway ticks over fine but as soon as I adjust the choke either open or close any further than the perfect point where I get it to start it revs its *** off and the cuts out. So putting the choke back to its sweet spot to get it to fire and run to tick over any it will accelerate using the thumb accelerator for around 30second to a minute before cutting out. Does anyone here have any suggestions before the thing gets the remainder of the jerry can poured on it 😂
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post #2 of 6 (permalink) Old 05-02-2020
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These pocket bike engines have extremely tiny Jets if even the most minuscule amount of dirt gets into the tank you will have this exact problem that you described running like crap with the choke half on then you let it sit for a while and the dirt floats out from under the jet and it runs for a minute or two and then it sucks that same bit of dirt back in and clogs and your back to the same problem.

You're going to need to take the carburetor off and clean it out and shine a flashlight through the jet and make sure it's clear be extremely gentle with the delicate carburetor parts and don't try to shove anything metal throw the jet...

I also recommend cleaning the tank replacing the fuel filter and line with quality stuff from the auto parts store

Faster then a speeding E Revo

Last edited by MrKitty; 05-02-2020 at 04:36 PM.
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post #3 of 6 (permalink) Old 2 Weeks Ago
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Time to get out the mini quad and get it all fixed up for fun it has a really moded CAG engine on it!!!
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File Type: jpg IMG_20200520_140952474_1590042022582.jpg (519.7 KB, 6 views)

Faster then a speeding E Revo
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post #4 of 6 (permalink) Old 2 Weeks Ago
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Took it all apart to clean it up and paint some parts
IMG_20200523_150311499_1590282424010.jpg

Supper high quality frame LOL
IMG_20200523_150322649_1590282480142.jpg

Got the bars back on and other parts that I painted.
IMG_20200523_170925333_HDR_1590282561251.jpg

Faster then a speeding E Revo

Last edited by MrKitty; 2 Weeks Ago at 08:57 PM.
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post #5 of 6 (permalink) Old 1 Week Ago
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Now I got it all cleaned up and put back together I put in supper hi strength bolts on the sprocket hopefully that holds or I'm going to weld the dam thing on there (you have to compress the suspension all the way when adjusting the chain especially on the mini quad) it's almost ready to go I did give it a pull and it ran for about 2 seconds with what ever old crap mixed with WD 40 I spray in there for winterization...

IMG_20200524_144404008_HDR_1590361705756.jpg
IMG_20200524_144416090_HDR_1590361757358.jpg
IMG_20200524_144424402_HDR_1590361796830.jpg
IMG_20200524_144432651_HDR_1590361825467.jpg
IMG_20200524_144446731_HDR_1590361862901.jpg

Faster then a speeding E Revo

Last edited by MrKitty; 1 Week Ago at 06:18 PM.
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post #6 of 6 (permalink) Old 1 Week Ago
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Re: Mini quad 49cc

I put my Grandson on a Honda clone mini-quad before he was 3 y/o. Kid used to do donuts in his diapers. As he got bigger and faster I kept modifying the quad to keep up with him, but it was a losing battle. He's 18 now and ridin' a YZ250. The list of mods are too numerous but I'll bet I got a half a pound of welding wire in it. Here's a bare frame pic from when I had to straighten it out after a crash ....





I even welded up some 8" rims for it. Foot pegs from a ATC. Real shocks. And on and on ...





Converted to a foot brake from the same ATC and was needing a master cyl for it when I spotted an old broken down Suzuki 850 in the carport of an apt building where I was working. We're on the coast, the cam cover's broke, and you can see the salt air rusting the cam's away. So I told the maintenance guys I sure could use the master cyl off of the bike ... and they never hesitated. "Ya wanna borrow some tools?" I did it. It's stopping on a stolen master cylinder.


Nowadays it's ****in' me off because I can't keep the pilot jet clean.
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