Rokon is an American Rochester, New Hampshire-based motorcycle manufacturer that builds two-wheel-drive off-road motorcycles which are marketed either under the company's name, or as the "Trail Breaker".

Motorcycle Troubleshooting

Overuse 
After enduring all the elements of riding listed above, the ignition coil is bound to wear out. 
The ignition coil’s wear and tear could damage the bond between the primary coil and the primary and secondary coil windings. 
Using the coil past the point of no return only damages it more and more, and overuse could strain other components in the process. 

Twist Grip Sticks
Twist grip end rubbing on the handlebar. Deposit buildup under twist grip. Worn or broken twist-grip or throttle cable. Throttle linkage improperly adjusted. Moisture under grip freezing in cold temp.

Chains Loosen Frequently
Improperly seated chain adjustment bolts. Loose axle bolts. Improper chain alignment. Chains need lubrication. Twisted or distorted chains.
Excessive end play in the wheel.
Loose axle bolts. Improper axle or wheel spacer thickness. Defective wheel bearings. Distorted bearing retainer housing in the wheel.

Chain Scoring Tire Sidewall
Improper chain alignment. Improper axle spacer thickness. Defective wheel bearings.

Excessive vibrations 
This is a potential issue on any bike. 
Bikes vibrate, and vibration can cause wear and tear on many of a bike’s components, including the ignition coil. If the ignition coil’s windings are damaged from vibration, it can cause breaks in your ignition coil’s secondary windings. 

Failed Wiring Loom/Harness 
The wiring loom or harness is an assembly of electrical wires bound by a durable material like the rubber or electrical tape. 
It keeps wires organized and protects them against exposure to vibration, moisture, and elements. 
A failed wiring loom can cause the motorbike not to start at all. It may also cause the lights to function erratically. For example, flickering dashboard lights are common on bikes with bad wiring harnesses/looms. 

Damaged spark plugs 
If your ignition coils operate at a higher output than average, then they are bound to get damaged quickly. 
This increased output may occur when your spark plugs are worn out. 
When a spark plug is wearing out, the coil is forced to produce more voltage to close this gap, and this extra strain can lead to overkill and an eventual failure.