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Discussion Starter · #1 ·
Hello all!

I am glad to see that there is an alive community for pocket bikes because I know very little about this hobby and I might put my hands on a Pocket Dirt Bike tonight...

My question is simple:
I am going to see this Bike tonight, and if I like it, I might end up leaving with it. Here it is:


The guy actually says that he buys them, repairs them and then sell them back. Asking 135$, which is a very fair price for what I know..

The seller says everything works great about the bike.
50cc 2 stroke
Pull start + Foot crank
All ready to go

But he also says that it is leaking gas a bit. The bike has a fuel cut off put it dosent seem to work...

My questions:
- What would be the source of the leaking? Anything easy to repair? Would it be the carb? If so, I guess I could just clean the carb and it will be good to go?
-Are you able to identify the bike, so it will be easier for me to shop parts and ask for advices?

For the rest, I will read on this forum to learn more!
Thanks a bunch for the info!!
 

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PBP SENIOR M!LKER
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Not sure exaclty what bike that is but you do have a 49cc cag type engine.. It has a kick start??? You sure? Most 49cc's like that only have a pull start.

The leaking gas is the Carb. Mine leaks if my throttle doesnt go back all the way when released. I have to push it back or it leaks.. A new carb might fix the trouble.. They are cheap!!

HAve fun!
 

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Discussion Starter · #3 ·
Thanks a lot for your reply! I saw that you reply a lot to people in other threads also... I thank you for your time with all us - nOObs - that take a lot of your time! :)

The guy told me on the phone that it indeed had a kick start, but I can confirm that tonight when Ill go see it... Does kickstart usually is better or just breaks all the time? Better to use the crank?

Good to hear its only the Carb. I will probably change it if I see that pushing the throttle completely doesnt work... Should I upgrade while I am at it? I checked on pocketbikeparts.com... Would something like this work on the bike? http://www.pocketbikeparts.com/Carburetor_19mm_Mikuni_HP_p/fscb301958.htm
 

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French Fries N Cheese
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is it leaking from the overflow? if it is, cleaning your carb and bending the tips of the forks down towards the float will deffinatly stop your leak. if its not leaking from the overflow, you can visit an autoparts store and get a gasket sheet, replace all the gaskets in the carb and do the reed block too, much less expensive than buying a new carb.
 

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PBP SENIOR M!LKER
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I was thinking if the guy fixes them and resells them he should have tried to clean and rebuild the carb.. But ya never know. It all depends on how deep you wanna go.. I'd take it off and clean it out. The over flow is nipple on the bottom of the carb. Some have few inch hose on it leaking to the ground.. Guess you have to see where it is leaking. If you didn't want to rebuild that carb, the carb in the link would work, you could find it cheaper on E-bay I'm sure..

See whats happining with it first..
 

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Discussion Starter · #6 ·
Thanks guys!

I will let you know when I get it... And probably post pictures of where it leaks...

Anybody from Canada here btw? Je suis du Quebec
 

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If you tie the rope around your foot, you might have a foot start,lol. That's a 49cc reed port Cag engine, does it have a 12mm piston carb?? I have 6. The fuel problem is probably the rubber in white turn off knob is bad, the float bowl is over flowing, the needle stuck open or dirty. You can get a new one online for $15. Most of us JB Weld the turn off housing and drill thru it and put a fuel turn off above it.
 

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French Fries N Cheese
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If you tie the rope around your foot, you might have a foot start,lol. That's a 49cc reed port Cag engine, does it have a 12mm piston carb?? I have 6. The fuel problem is probably the rubber in white turn off knob is bad, the float bowl is over flowing, the needle stuck open or dirty. You can get a new one online for $15. Most of us JB Weld the turn off housing and drill thru it and put a fuel turn off above it.
can also weld a tap knob on your fuel filter, if its metal.does a Cleaner job when you want to remove the gas tank when it still has gas in it.
 

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Discussion Starter · #10 ·
Wow lots of info here! Thanks guys. I am attaching a picture where it is leaking... It looks like a tube going nowhere... Normal? (i am pointing where it leaks with the wrench):


Also... I had a little fun with the bike tonight and unfortunatly broke a clutch spring... I took a picture real quick and I am pretty sure the clutch will need to be changed (25$ on ebay, dont really care)
 

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French Fries N Cheese
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I know a store where you can get the springs if you are in the metropolitan area of montreal, other than that, the tube is a overflow valve. its purpous is to remove any excess fluid overflowing from the bowl. Ill get you a link on how to fix in a sec.

edit: they also sell whole clutch, and the performance upgrade.
 

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Discussion Starter · #13 ·
Merci Math!
I found a shop here in Gatineau, so I am in business!

These clutch springs... Are they regular or 1.5"?
 

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Try to get hp or racing springs, take one of your old ones with you, there 1 gauge bigger and let your engine revv more before the clutches grab. You can drill holes in the clutch arms to make it even better. Is there 1mm of pad material left on the alum shoes?? You can buy just the clutch arms someplaces, that and new springs, and your ready. See alot of clutch dust, someone must have been have Fun,lol.
 

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Discussion Starter · #15 ·
I dont think there is any pad material left... What causes that? Playing with throttle without moving? If no pad left, i should buy a whole new clutch assembly? What will this improve?

By the amount of dust i see, + no air filter on the bike, i will probably disamble the carb and clean it...

I went for a spin and GODDD... Those things are fast!!! (i guess it helped having 0 air filter)
 

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Discussion Starter · #17 · (Edited)
Merci Math! Really appreciated!

Soooo just for a "quick" update, here's what happened recently..

Thw bike wouldn't run anymore so I guessed I will need a new clutch and air filter... Found a local guy that sell Pocket bikes parts.. 25$ for HP clutch and 5$ HP air filter...

Got there, we changed the parts but couldnt start the bike even with some QuickStart..

We ended up changing:
-The Carb
-The gaskets
-The small fins that let the fuel in the engine (?)
-The fuel line

And it never started... We were really frustrated... We ended up swaping the whole engine and transmisson from another bike (which included a brand new clutch and brand new carb), which worked perfectly!

SO summary, I spent 4hours with the mecanics, changed a bunch of parts, ended up swaping the whole thing with a newer engine and transmissin, all that for 55$... The mecanix was so great, he took the time to explain me all the details and the funtions of the parts while we were working on the bike... I am kow full of knowledge! :D

Now the bike works great, I rode it for like 3hours yesterday! YAY!

I also put some Inox wire sponge in the exaust canister to minimize the noise :)

 

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NO GOOD DEED GOES UNPUNIS
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Nice job lol a lot of people would have given up after a hour its great to have someone there to help and teach you as well great job tho props
 

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French Fries N Cheese
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Nicely done, good to see you got that thing running! now all you need to do is hit the trails! Nothing like building something up, riding the **** out of it and having to fix it again, haha.

those small fins are the reeds, the stock ones are made out of cheap tin and dont last very long.

Keep up the good work!
 

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Good Job, Just have to keep looking, on my scooter yesterday the gas line going thru the rubber grommet split and the 813 Walbro was not getting enough gas. This kind of stuff happens all the time, next it will be a broken clutch spring,lol.
 
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