What causes Fuel injector clogging from ethanol fuel on the Husqvarna Tx 300i?

Hard starting, rough idle, fuel smell at injector Estimated fix cost: $80-$200

What causes Throttle body carbon buildup on the Husqvarna Tx 300i?

Erratic idle, hesitation on snap throttle Estimated fix cost: $50-$150

Grainy noise, play in crankshaft, check service history Estimated fix cost: $400-$900

White residue near water pump, coolant level drop Estimated fix cost: $30-$120

Known issues to inspect before buying a used Husqvarna Tx 300i. What to check and how much repairs cost.

MODERATE

Hard starting, rough idle, fuel smell at injector

Fix cost: $80-$200

MODERATE

Erratic idle, hesitation on snap throttle

Fix cost: $50-$150

SERIOUS

Grainy noise, play in crankshaft, check service history

Fix cost: $400-$900

MINOR

White residue near water pump, coolant level drop

Fix cost: $30-$120

☐Pull maintenance records and hour meter

☐Cold start test, listen for bearing noise

☐Inspect radiator fins and coolant color

☐Check throttle response and idle stability

Reliable but maintenance-sensitive, avoid neglected examples