What causes Valve wear and tight clearances on the Suzuki Rm-z 450?

Pull valve cover, measure clearances, check service history Estimated fix cost: $300-$800

What causes Piston and ring wear from neglect on the Suzuki Rm-z 450?

Compression test, ask hours ridden, inspect air filter Estimated fix cost: $200-$500

Test hot start lever, hard restart when warm Estimated fix cost: $20-$60

Inspect welds around steering head and swingarm pivot Estimated fix cost: $400-$900

Known issues to inspect before buying a used Suzuki Rm-z 450. What to check and how much repairs cost.

SERIOUS

Pull valve cover, measure clearances, check service history

Fix cost: $300-$800

SERIOUS

Compression test, ask hours ridden, inspect air filter

Fix cost: $200-$500

MINOR

Test hot start lever, hard restart when warm

Fix cost: $20-$60

SERIOUS

Inspect welds around steering head and swingarm pivot

Fix cost: $400-$900

☐Request full maintenance log and hours

☐Do compression test before buying

☐Check for oil leaks around engine cases

☐Inspect subframe and frame for cracks

Reliable if maintained, punishing if neglected