Dynacraft SINGLE SPEED Owner's Manual page 117

PROBLEM
Freewheel does not rotate.
Brakes not working effectively.
When applying the brakes they
squeal/squeak.
Knocking or shuddering when
applying brakes.
Wobbling wheel.
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TROUBLE SHOOTING
POSSIBLE CAUSE
- Freewheel internal pawl pins are
jammed.
- Brake blocks worn down.
- Brake blocks/rim greasy,wet or
dirty.
- Brake cables are binding,
stretched or damaged.
- Brake levers are binding.
- Brakes out of adjustment.
- Brake blocks worn down.
- Brake block toe-in incorrect.
- Brake blocks/rim dirty or wet.
- Brake arms loose.
- Bulge in the rim or rim out of true.
- Brake mounting bolts loose.
- Brakes out of adjustment.
- Fork loose in head tube.
- Axle broken.
- Wheel out of true.
- Hub comes loose.
- Headset binding.
- Hub bearings collapsed.
- Quick release mechanism loose.
REMEDY
- Lubricate, if problem persists,
replace freewheel.
- Replace brake blocks.
- Clean blocks and rim.
- Clean, adjust, or replace cables.
- Adjust brake levers.
- Center brakes.
- Replace blocks.
- Correct block toe-in.
- Clean blocks and rim.
- Tighten mounting bolts.
- True wheel or take to a bike shop.
- Tighten bolts.
- Center brakes and/or adjust
brake block toe-in.
- Tighten headset.
- Replace axle.
- True wheel.
- Adjust hub bearings.
- Adjust headset.
- Replace bearings.
- Adjust QR mechanism.