What causes Carburetor jets clog from ethanol fuel on the Honda Shadow Ace (vt750c)?

Rough idle, hard start, flat spots on acceleration Estimated fix cost: $50-$150

What causes Pilot screw O-rings deteriorate over time on the Honda Shadow Ace (vt750c)?

Erratic idle, won't idle without choke Estimated fix cost: $20-$80

Battery draining, voltage under 13.5V at idle Estimated fix cost: $150-$350

Oil residue on fork tubes below seals Estimated fix cost: $80-$200

Known issues to inspect before buying a used Honda Shadow Ace (vt750c). What to check and how much repairs cost.

MODERATE

Rough idle, hard start, flat spots on acceleration

Fix cost: $50-$150

MODERATE

Erratic idle, won't idle without choke

Fix cost: $20-$80

SERIOUS

Battery draining, voltage under 13.5V at idle

Fix cost: $150-$350

MINOR

Oil residue on fork tubes below seals

Fix cost: $80-$200

☐Check charging voltage with multimeter running

☐Inspect fork tubes for oil streaks

☐Start cold, listen for smooth idle

☐Look for ethanol fuel damage in carbs

Solid engine, neglected maintenance is main concern