What causes Rear cylinder runs hot, cooks paint/wiring on the Suzuki Boulevard M109r (vzr1800) B.o.s.s.?

Discolored rear head, brittle plug wire, melted plastics Estimated fix cost: $0-300

What causes Weak stator/regulator, charging failure on the Suzuki Boulevard M109r (vzr1800) B.o.s.s.?

Battery voltage 14.2-14.8V at 3000rpm, burnt connectors Estimated fix cost: $300-700

Center tire flat spot, cupping, date code Estimated fix cost: $350-500

Shudder from stop, grinding noise, slip in top Estimated fix cost: $200-600

Known issues to inspect before buying a used Suzuki Boulevard M109r (vzr1800) B.o.s.s.. What to check and how much repairs cost.

MODERATE

Discolored rear head, brittle plug wire, melted plastics

Fix cost: $0-300

SERIOUS

Battery voltage 14.2-14.8V at 3000rpm, burnt connectors

Fix cost: $300-700

MINOR

Center tire flat spot, cupping, date code

Fix cost: $350-500

MODERATE

Shudder from stop, grinding noise, slip in top

Fix cost: $200-600

☐Cold start, listen for rear cylinder tick

☐Load-test charging system with multimeter

☐Inspect final drive and rear tire

☐Verify valve adjustment and service records

Solid engine, watch heat and electrics