What causes Cam chain tensioner wear causes rattle on the Yamaha Tdm850?

Cold start rattle that disappears when warm Estimated fix cost: $50-$150

What causes Carb diaphragm cracks cause poor running on the Yamaha Tdm850?

Hesitation, flat spots, rough idle at all RPMs Estimated fix cost: $80-$200

Oil residue on lower fork legs and stanchions Estimated fix cost: $80-$180

Battery voltage at idle, check for overcharging signs Estimated fix cost: $60-$150

Known issues to inspect before buying a used Yamaha Tdm850. What to check and how much repairs cost.

MODERATE

Cold start rattle that disappears when warm

Fix cost: $50-$150

MODERATE

Hesitation, flat spots, rough idle at all RPMs

Fix cost: $80-$200

MINOR

Oil residue on lower fork legs and stanchions

Fix cost: $80-$180

SERIOUS

Battery voltage at idle, check for overcharging signs

Fix cost: $60-$150

☐Cold start it, listen for top-end rattle

☐Check throttle response through full RPM range

☐Inspect fork legs for oil weeping

☐Test charge voltage: should read 13.8-14.5V

Solid motor, electrics and carbs need attention