Husqvarna • Chainsaw
Husqvarna 545 Mark II Maintenance Specs
Professional chainsaw fuel, spark-plug, and chain-oil specs sourced from the official Husqvarna 545 Mark II operator manual.
Quick Specs
Fuel Mix
50:1 (2%)
Spark Plug
NGK CMR6H
Plug Gap
0.020 in / 0.5 mm
Fuel Tank
1.12 US pint / 0.53 L
Chain-Oil Tank
0.68 US pint / 0.32 L
Fuel & Two-Stroke Oil
Mix Ratio
50:1 gasoline to two-stroke oil (2%)
Gasoline
Good-quality unleaded; maximum 10% ethanol; minimum 90 RON / 87 AKI
Two-Stroke Oil
Husqvarna two-stroke oil, or good-quality oil for air-cooled two-stroke engines
Fuel Tank Capacity
1.12 US pint / 0.53 L
Spark Plug
Plug Model
NGK CMR6H
Electrode Gap
0.020 in / 0.5 mm
Chain Oil & Routine Maintenance
Chain Oil
Husqvarna chain oil; if unavailable, standard chain oil with suitable adherence and temperature-range viscosity
Chain-Oil Tank Capacity
0.68 US pint / 0.32 L
Spark Plug
Replace monthly or more frequently if necessary
Fuel Filter
Replace yearly or more frequently if necessary