The manual is a bit lacking, so I'm going to post some errors and suggestions for improvement. Please chime in if you have corrections or additions to the manual.
ASSEMBLY INSTRUCTIONS (p4)
Front wheel is already installed, no assembly needed there.
It would be helpful to mention how to install the rear wheel "plastic cover thingies," whatever they're called.
TECHNICAL SPECIFICATION (p5)
Charging time: 4 hours might be optimistic.
Top speed: More like 45-50mph, not 55mph.
Product size: Somebody mentioned that the specified length is not correct? I haven't measured my bike yet.
PARTS LIST (p6)
This should be 2 or 3 diagrams. It's hard to tell what's what from just 1 diagram.
G) Under seat storage is actually pointing to something up on the handlebars.
N) Center Stand is actually pointing to the front battery access door.
O) Kick Stand is actually pointing to the Center Stand.
FRONT DISPLAY (p7)
The parts are listed with letters, but the photo has no letters marked. But it is pretty obvious which part is which.
RIGHT HANDLE BAR CONTROLS (p9)
Speed switch: "Economical speed switch can ensure longer range and high speed switch provides bigger AMP for accelerating and climbing." I think it should mention which is which :-) On my bike, "0" is high-speed and "1" is low-speed.
The manual makes it sound as though the headlight switch actually turns the headlights on and off. But it is really the ignition key that does this.
The headlight switch that is pictured and described is a left-to-right switch, but on my bike it is an up-and-down switch.
BATTERY GAUGE AND CHARGING INSTRUCTIONS (p11)
"BMS charger ensure of balance Voltage on each cell battery." This is incorrect; the bike does not come with a BMS.
FREQUENTLY ASKED QUESTIONS (p15)
2) "speed from 0 to 55mph (88km/H) takes only 6 seconds" Hahahahaha, I wish!
3) "When the driver turns the ignition key, three beeps will immediately follow telling the driver that the vehicle is ready to drive." Hmm. My bike did this once or twice. It doesn't do it anymore.
11) "If one of the batteries has a problem do I need to change all the five batteries?" There are actually 20 batteries, not 5.
REAR COVER PHOTO
The photo here looks like it is from a different bike, maybe the XM-3000?