The best assembly instructions available for your item will be included in your Owners Manual.
If you don't already have one you can download it below.
X-Racer assembly video
(can be used for a lot of different models)

Scooters

X-treme:	Part #	Part Diagram:	Product Manual:	Wiring Diagram:
X-Treme™ X-010	X-010	n/a	Download	n/a
X-Treme™ X-250	X-250	n/a	Download	n/a
X-Treme™ X-500	X-500	n/a	Download	n/a
X-Treme™ X-360	X-360	n/a	Download	n/a
X-Treme™ XG-505	XG-505	n/a	Download	n/a
X-Treme™ XG-499	XG-499	n/a	Download	n/a
X-Treme™ XG-550	XG-550	n/a	Download	n/a

ScooterX:	Part #	Part Diagram:	Product Manual:	Wiring Diagram:
ESX-Racer 49cc Gas Scooter	SX-02	n/a	Download	n/a
Dirt Dog 49cc Gas Scooter	SX-03	n/a	Download	n/a
Power Kart 49cc Gas Go Kart Basic manual for Power Kart Power Kart 2012 and Power Kart Baja	n/a	n/a	Download	n/a
SkaterX 49cc Skate Board	SX-05	n/a	Download	n/a
Dirt Dog 500w Electric Scooter	SX-04	n/a	n/a	n/a
Power Kart 500w Electric Go Kart	SX-06	n/a	Download	Download

Evo Powerboards:	Part #	Part Diagram:	Product Manual:	Wiring Diagram:
Evo 300w Electric Scooter	Evo-300	n/a	Download	n/a
Evo 500w Electric Scooter	Evo-500	n/a	Download	n/a
Evo 800w Electric Scooter	Evo-800	n/a	Download	n/a
Evo Rx 50cc Gas Scooter	Evo-Rx	n/a	Download	n/a
Evo 2x 50cc Gas Scooter	Evo-2x-Big	n/a	Download	n/a

Electric Wheels:	Part #	Part Diagram:	Product Manual:	Wiring Diagram:
EW-200 Electric Scooter	EW-200	n/a	Download	n/a
EW-280 Electric Scooter	EW-280	n/a	Download	n/a
EW-700 Electric Scooter	EW-700	n/a	Download	n/a
EW-1000 Electric Scooter	EW-1000	n/a	Download	n/a
EW-500 Electric Moped	EW-500	Download	Download	n/a
EW-550 Electric Moped	EW-550	n/a	Download	n/a
EW-600 Electric Moped	EW-600	n/a	Download	n/a
EW-36 Mobility Scooter	EW-36	n/a	Download	n/a
EW-54-LA Electric Trike	EW-54-LA	n/a	Download	n/a
EW-620-LA Electric Bicycle	EW-620-LA	n/a	Download	n/a
EW-620-LI Electric Bicycle	EW-620-LI	n/a	Download	n/a
EW-624-LA Electric Bicycle	EW-624-LA	n/a	Download	n/a
EW-624-LI Electric Bicycle	EW-624-LI	n/a	Download	n/a
EW-1100-LI Electric Bicycle	EW-1100-LI	n/a	Download	n/a
EW-1200-LI Electric Bicycle	EW-1200-LI	n/a	Download	n/a

Kids Ride On Toys

Toys Toys:	Part #	Part Diagram:	Product Manual:	Wiring Diagram:
Ferrari F1 12v	TT-676234	Download	Download	Download
Mercedes 300 SL 6v	TT-655641	Download	Download	Download
Audi TT Roadster 6v	TT-656031	Download	Download	Download
Porsche Cayenne 6v	TT-656150	Download	Download	Download
BMW Z4 Roadster 6v	TT-656164	Download	Download	Download
Mercedes SLK 6v	TT-656224	Download	Download	Download
Mini Cooper 6v	TT-656226	Download	Download	Download
BMW 335i Cabrio 6v	TT-656386	Download	Download	Download
Ferrari Enzo 12v	TT-676204	Download	Download	Download
BMW M6 12v	TT-676281	Download	Download	Download
Mercedes 300 SL Pedal	TT-621701	Download	Download	n/a
VW Bettle Pedal	TT-622063	Download	Download	n/a
Audi TT Roadster Pedal	TT-622071	Download	Download	n/a
Porsche Cayenne Pedal	TT-622190	Download	Download	n/a
BMW Z4 Roadster Pedal	TT-622204	Download	Download	n/a
Ferrari Enzo Pedal	TT-622234	Download	Download	n/a
Mini Cooper Cabrio Pedal	TT-622276	Download	Download	n/a
Mercedes SLK Pedal	TT-622284	Download	Download	n/a
BMW 335i Cabrio Pedal	TT-622486	Download	Download	n/a
BMW M6 Pedal	TT-676281	Download	Download	n/a

Injusa:	Part #	Part Diagram:	Product Manual:	Wiring Diagram:
Grand Legend	Inj-751	Download	Download	Download
Phantom Racer	Inj-754	n/a	n/a	Download
Two Evasion Jeep	Inj-753	Download	Download	Download
Boogie Car / Rally Car	Inj-7002 Inj-7005	Download	Download	Download
Mega Cyclops Quad	Inj-663	n/a	n/a	Download
Quad Mantis	Inj- 6601	n/a	n/a	Download
Big Wheels Go-Kart	Inj- 669	n/a	Download	Download
Power Kart / Speedy Kart	Inj-665 Inj-6651	Download	Download	Download
Toony Track	Inj-409	Download	n/a	Download
Repsol Motorcycle	Inj-644	Download	Download	Download
Moto Thunder Dirt Bike	Inj-6811	Download	Download	Download
Custom Falcon	Inj-690	Download	Download	Download
Scooter Duo	Inj-686 Inj-6862	Download	Download	Download
Buddy Quad	Inj-135 Inj-1352	Download	Download	Download
Minotauro Complete	Inj-171	Download	Download	Download

Feber:	Part #	Part Diagram:	Product Manual:	Wiring Diagram:
TT Adventure 12v	Feb-800003904	n/a	Download	n/a
Roadster Waverazor 6v	Feb-800003472	n/a	Download	n/a
Formula 1 6v	Feb-800003611	n/a	Download	n/a
Buggy Bucaneer 12v	Feb-800003463	n/a	Download	n/a
Buggy Pirate 6v	Feb-800003461	n/a	Download	n/a
Sport Series Rocket 6v	Feb-800003434	n/a	Download	n/a
SXC 6v Dirt Bike	Feb-800003433	n/a	Download	n/a
Quad Brutale 12v	Feb-800003457	n/a	Download	n/a
Mega Racing Bike	Feb-800003833	n/a	Download	n/a
Viking Ultimate Racer	Feb-800003095	n/a	Download	n/a

Mini Motos:	Part #	Part Diagram:	Product Manual:	Wiring Diagram:
ATV Racer 12v	MM-GB789	n/a	Download	n/a
Classic Car 6v (R/C)	MM-GB999-6	n/a	Download	n/a
Truck Adventure 12v	MM-GBA18	n/a	Download	n/a
Car Bug 6v (R/C)	MM-GBA19	n/a	Download	n/a
ATV Enduro 12v	MM-GBA22	n/a	Download	n/a
Dirt Bike 12v	MM-GBA23	n/a	Download	n/a
Off Road Truck 12v	MM-GBA26	n/a	Download	n/a
ATV Baja 6v	MM-GBB03	n/a	Download	n/a
Off Road Truck 6v (R/C)	MM-GBA30	n/a	Download	n/a
F1 Go-Kart 12v	MM-GB81A	n/a	Download	n/a
Car Racer 6v (R/C)	MM-GBA28	n/a	Download	n/a
Sports Car 12v	MM-GBB15	n/a	Download	n/a
Red Hawk Motorcycle 12v	MM-5008	n/a	Download	n/a
Super Car 12v	MM-5018	n/a	Download	n/a
ATV Sport 12v	MM-5118	n/a	Download	n/a
Star Car 6v	MM-5188	n/a	Download	n/a

Kalee:	Part #	Part Diagram:	Product Manual:	Wiring Diagram:
Indian Motorcycle 6v	KL-30040	n/a	Download	Download
Dirt Bike 12v	KL-20013	n/a	Download	n/a
Custom Chopper 12v	KL-20033	n/a	Download	n/a
Fire Truck 12v	KL-40027	n/a	Download	Download