What causes Stator/electrical failure at high hours on the Yamaha Exc 450 (yamaha Branded)?

Test charging voltage, inspect stator wiring for burns Estimated fix cost: $200-$400

What causes Worn piston and rings from neglect on the Yamaha Exc 450 (yamaha Branded)?

Check compression, listen for top-end rattle at idle Estimated fix cost: $300-$600

Ask for valve service history, hard starting is a sign Estimated fix cost: $100-$250

Inspect fins and hoses for cracks or past repairs Estimated fix cost: $80-$300

Known issues to inspect before buying a used Yamaha Exc 450 (yamaha Branded). What to check and how much repairs cost.

SERIOUS

Test charging voltage, inspect stator wiring for burns

Fix cost: $200-$400

SERIOUS

Check compression, listen for top-end rattle at idle

Fix cost: $300-$600

MODERATE

Ask for valve service history, hard starting is a sign

Fix cost: $100-$250

MINOR

Inspect fins and hoses for cracks or past repairs

Fix cost: $80-$300

☐Request full maintenance and rebuild records

☐Cold-start test to reveal true running condition

☐Check frame and subframe for cracks or welds

☐Inspect fork seals and suspension for leaks

Solid engine, maintenance-dependent, inspect thoroughly before buying