What causes Carburetor gumming from ethanol fuel sitting on the Yamaha Virago 535?

Rough idle, hard starting, black smoke on startup Estimated fix cost: $50-$150

What causes Petcock vacuum diaphragm cracking and leaking on the Yamaha Virago 535?

Fuel leaking from petcock, engine dying at low RPM Estimated fix cost: $20-$60

Battery draining fast, dim lights at idle Estimated fix cost: $40-$120

Rear header glowing red, uneven exhaust heat Estimated fix cost: $80-$200

Known issues to inspect before buying a used Yamaha Virago 535. What to check and how much repairs cost.

MODERATE

Rough idle, hard starting, black smoke on startup

Fix cost: $50-$150

MODERATE

Fuel leaking from petcock, engine dying at low RPM

Fix cost: $20-$60

SERIOUS

Battery draining fast, dim lights at idle

Fix cost: $40-$120

MODERATE

Rear header glowing red, uneven exhaust heat

Fix cost: $80-$200

☐Cold start test, should fire easily

☐Check for oil leaks around valve covers

☐Test both cylinders fire at idle

☐Inspect frame for rust or crash damage

Solid, simple V-twin, easy to maintain cheaply