Nishiki Aero II Troubleshooting

There is little or no air pressure in the tire.

The tube valve cap must be present at all times in order to prevent air from escaping. The tube valve stem could be loose in which case use a wrench to tighten it. Over time the tire pressure decreases, requiring the occasional use of a bike pump to inflate the tire.

If the tire quickly deflates it is possible that the inner tube has popped. Tubes may be repaired using a patch kit or replaced with a new tube.

See [collegamento guida non valido]

"It feels like I'm riding uphill all the time!"

Tight or misaligned brakes can cause resistance while pedaling. On the frame below the handlebars (front brakes) and the seat (rear brakes) where cable meets cable housing, loosen brakes by turning the screw clockwise. If adjusting screw does not alleviate the excessive brake cable tension, follow the brake cable to where the brake mechanism meets the tire. Here, loosen the nut holding the cable and brake together until cable is sufficiently loose before re-tightening nut.

See the brake adjustment guide.

After prolonged use, wheel may become worn and lose traction. This issue can be fixed by replacing the worn tire.

See [collegamento guida non valido]

Pedals are not responsive

The front derailleur moves the chain from one chainring to the next chainring and can become misaligned. Misalignment causes the chain to rub against the derailleur, possibly leading to chain slipping. This issue can be resolved by repairing or replacing the derailleur.

See the derailleur adjustment guide.

If the chain is loose, it may brush against the derailleur and possibly slip when changing gears. To tighten the chain, first locate the nuts holding the rear tire to the frame. Use a wrench to loosen nuts then move the rear wheel back until chain has about an inch of movement. Finally re-tighten the nuts using the wrench. If chain is still loose after moving wheel as far back as possible, replace with a new chain.

See the chain adjustment guide.

You hear a clicking noise while pedaling.

The front derailleur moves the chain from one chainring to the next chainring and can become misaligned. Misalignment causes the chain to rub against the derailleur, possibly leading to chain slipping. This issue can be resolved by repairing or replacing the derailleur.

See the derailleur adjustment guide.

The hanger should be parallel with the the face of the rear cogs. With the derailleur installed, the pulleys should be in the same plane as the rear cogs.

Bike shakes or wobbles while riding.

A broken spoke can be detected if it makes noise as the wheel rotates or if a missing spoke is visible. A spoke can be replaced by an experienced wheelbuilder.

Truing a wheel is one of the trickiest maintenance and repair jobs needed on a bicycle. An inexperienced truing "touch up" can turn an imperfection into a disaster. We recommend taking your damaged wheel to a good wheelbuilder or bicycle repair shop.

You need a lot of distance to stop.

Brake pads have limited operational life and must be replaced periodically in order to prevent unsafe riding conditions. A delay in slowing down after the brakes are engaged is an indication of worn out brake pads. To fix the problem replace the brake pads.

If the brake lever feels loose when engaged, the brake cables likely need to be tightened. Try turning the barrel adjuster on the brake lever counterclockwise to tighten the brake cable.

If brakes are still too loose, refer to the brake cable tightening guide.

The handlebars are not in line with the wheel

A cracked headset does not allow the handlebars to grip the frame well, making it difficult to turn as desired. The best solution is to replace the damaged headset with a new one.

If the headset screw is loose, the headset will rotate independently from the frame and wheel. To fix this issue, use an allen wrench to tighten the headset screw.

Gears slip or do not change when adjusted

Gear cable housing is the plastic lining that covers and protects the metal gear cable. It is important to keep the cable housing intact and undamaged in order to protect the gear cable from rusting. If the cable housing is damaged, the ability to change gears without resistance is lost. In order to fix this issue, new cable housing should be purchased and installed to replace the damaged housing.

The cogset is a set of discs with teeth on the outer edge. Over time the teeth can be worn down making it difficult for the chain to grip on, which causes the gears to slip. The best solution is to replace the cogset.