What causes Throttle body/injector clogging from ethanol fuel on the Sherco Se 300i?

Rough idle, hesitation, check for stale fuel smell Estimated fix cost: $80-$200

What causes Radiator hose leaks and coolant loss on the Sherco Se 300i?

Inspect hose clamps and hoses for cracks or weeping Estimated fix cost: $40-$120

Check oil color on dipstick for milky appearance Estimated fix cost: $150-$350

Inspect main ECU harness connector for green corrosion Estimated fix cost: $50-$200

Known issues to inspect before buying a used Sherco Se 300i. What to check and how much repairs cost.

MODERATE

Rough idle, hesitation, check for stale fuel smell

Fix cost: $80-$200

MODERATE

Inspect hose clamps and hoses for cracks or weeping

Fix cost: $40-$120

SERIOUS

Check oil color on dipstick for milky appearance

Fix cost: $150-$350

MODERATE

Inspect main ECU harness connector for green corrosion

Fix cost: $50-$200

☐Cold start test, listen for clean idle

☐Pull dipstick, check for milky oil

☐Check service history, valve clearances done

☐Inspect subframe welds for stress cracks

Good if maintained, neglect causes expensive issues