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OH ITS A 2 STROKE, wow i completely neglected to notice that, MY BAD. youre right there won't be an oil fill. yeah that ratio is important!

good thinking pulling the carb apart, that pin is called the '[mix] needle' btw (real complex huh - youll notice a lot of this shits like this, quite straight forward).

well that's a relief, saves you the time and effort trying to buy and fit a new motor. those motors I mentioned wouldn't just bolt on, you would've had to fab a mount for it and some sort of transmission to the wheels (easiest thing to do is weld a sprocket onto the axel and use a chain).

congrats! youve been learned motors. theyre really easy to tinker with, just dont break anything lol.


sidenote: if you're real curious to see the actual health of the engine, get a compression gauge. don't wanna get balls deep in the project only to watch the engine slowly lose power and die. the engine is back up and running so honestly I wouldn't really worry about it, but like I said im meticulous so I like to know these things. readings should be like 120-170psi. Super simple to use. Just take out the spark plug, put the gauge in, hold the throttle all the way open and rip the starter cord a few times and see when the needle stops climbing, thats your measurement.

https://www.amazon.com/INNOVA-3614-Compression-Tester-Plus/dp/B000EVU8JS/ref=sr_1_2?ie=UTF8&qid=1468123185&sr=8-2&keywords=compression+gauge

(I am not a shill) I got this one and it works pretty well.

Looks like 700 watts, then? Here is a 350 razor motor from amazon: http://www.amazon.com/Electric-Motor-Razor-MX350-Rocket/dp/B00ED5DH4O

You can buy a whole electric go kart for $370. It has a 350W motor, which they say is only enough for 120 lb person.

http://www.amazon.com/Razor-25143597-Dune-Buggy/dp/B000VEWWF6/ref=pd_sim_sg_6?ie=UTF8&refRID=0JR61DV91TNME69SZT1J

This one uses a 1000W motor:
http://www.instructables.com/id/Electric-GoKart/

And it looks like those cost about $100:
http://www.ebay.com/bhp/scooter-1000w-motor-electric

Try these rims
https://www.gopowersports.com/three-piece-wheel-for-3-4-or-1-axle/

With these tires
Carlisle Smooth Lawn & Garden Tire - 13X5-6 https://www.amazon.com/dp/B005O5T9E4/ref=cm_sw_r_cp_apa_i_e3BGDb1FKP9WY

I used these rims for the front
https://www.gopowersports.com/6-floater-wheel-special/
With these tires
Pack of 4 Sport ATV Tires 145/70-6 145x70-6 Go-Kart, Mini Bike, ATV, Lawn Tires 145x70x6, 4PLY https://www.amazon.com/dp/B078M939L3/ref=cm_sw_r_cp_apa_i_mOyGDbA858PDY

I have a CT100 with has the same engine. It's a Honda clone, basically a 79cc Predator. There are videos out there on how to remove the gov. New carbs are cheap.

Just bought one of these for a similarly sized 3hp tecumseh, no idea if your engine comes with a bolt and washer, but you might have to order that separately.
https://www.amazon.com/dp/B01M63YUTW/ref=cm_sw_r_cp_api_i_gTAxDbBCPYS6X