🏷️ Basic Information Identification Make: Husqvarna Model: Chainsaw Model Variant: 51, 55, 61, 242XP Year: Not specified (covers multiple models) Generation: Not specified (covers multiple models) 📋 Manual Details Description Manual Type: Workshop Repair Manual Manual Format: PDF Download Language: English Content Focus: Repair, Maintenance, Rebuild, Refurbish, Restoration, Diagnostics Target Audience: Professional Technicians, Mechanics, Enthusiasts Availability: Instant Download Inclusion Features: High Quality Photos, Illustrations, Diagrams Benefit: Save on Service & Repair Costs Computer Requirements Operating Systems: Windows 95, 98, 98SE, 2000, NT, ME, XP, VISTA, Windows 7, All Mac Computers ⚙️ Engine Specifications General Engine Type: 2-stroke petrol engine Displacement: Varies by model (e.g., 51.7cc for 51, 54.5cc for 55, 61cc for 61) Bore: Varies by model Stroke: Varies by model Power Output: Varies by model (e.g., ~2.2kW for 51, ~2.3kW for 55, ~3.0kW for 61) Fuel And Ignition Fuel Type: Unleaded petrol mixed with 2-stroke oil Fuel Oil Ratio: Typically 50:1 (check manual for exact specifications) Cooling Cooling System: Air-cooled Carburetor Carburetor Type: Walbro or Tillotson (model dependent) 🔧 Transmission Drive System Drive Type: Direct drive Clutch: Centrifugal clutch 📐 Dimensions General Weight: Varies by model (e.g., ~4.9kg for 51/55, ~6.0kg for 61, ~5.9kg for 242XP - dry weight without bar and chain) 🔧 Maintenance Routine Service Spark Plug: Champion RCJ7Y or equivalent Air Filter Cleaning Interval: Frequent cleaning recommended based on usage conditions Chain Lubrication: Automatic chain oiler Bar And Chain Sharpening: As needed, dependent on usage and cutting material