What causes Carburetor clogging from ethanol fuel damage on the Honda Xl 600r?

Hard starting, rough idle, fuel bowl for varnish deposits Estimated fix cost: $50-$150

What causes Worn cam chain causing engine rattle on the Honda Xl 600r?

Cold start rattling noise from top end Estimated fix cost: $150-$400

Multimeter battery voltage at idle, dim lights Estimated fix cost: $100-$250

Known issues to inspect before buying a used Honda Xl 600r. What to check and how much repairs cost.

MODERATE

Hard starting, rough idle, fuel bowl for varnish deposits

Fix cost: $50-$150

SERIOUS

Cold start rattling noise from top end

Fix cost: $150-$400

SERIOUS

Multimeter battery voltage at idle, dim lights

Fix cost: $100-$250

☐Check for oil leaks around head gasket

☐Test cold start without choke tricks

☐Inspect frame for cracks near swingarm

☐Verify compression above 150 psi minimum

Solid workhorse if maintained, neglect kills them