What causes Coolant leaks from water pump seal on the GASGAS EC 250 Factory?

Look for white residue around water pump housing Estimated fix cost: $40-$120

What causes Power valve carbon buildup causing flat spots on the GASGAS EC 250 Factory?

Remove and inspect power valve for sticky carbon deposits Estimated fix cost: $20-$80

Ask for service history, check compression with gauge Estimated fix cost: $200-$500

Inspect radiator fins and hoses for damage or kinks Estimated fix cost: $150-$400

Known issues to inspect before buying a used GASGAS EC 250 Factory. What to check and how much repairs cost.

MODERATE

Look for white residue around water pump housing

Fix cost: $40-$120

MODERATE

Remove and inspect power valve for sticky carbon deposits

Fix cost: $20-$80

SERIOUS

Ask for service history, check compression with gauge

Fix cost: $200-$500

MINOR

Inspect radiator fins and hoses for damage or kinks

Fix cost: $150-$400

☐Check compression with gauge before buying

☐Inspect transmission for notchy shifting feel

☐Verify frame has no cracks near headstock

☐Cold-start the bike, watch for smoke

Solid bike if maintained, punishing if neglected