This McCulloch 610 & 650 Owners Manual is the same manual that came with the original saw. The manual covers maintenance & adjustment items like: *IDENTIFICATION *SAFETY INSTRUCTIONS *GENERAL CUTTING INSTRUCTIONS *FUEL & LUBRICATION - Fuel, Mixing Fuel, Fuel Mixture Table, & Chain & Bar Lubrication *INSTALLATION - Spike, Guide Bar, Saw Chain, & Chain Brake *OPERATING INSTRUCTIONS - Chain Brake Operation, Starting & Stopping, Carburator Adjustment, Break in Instructions & Storing the Saw *MAINTENANCE - Air Filter, Spark Plug, Fuel Cap, Fuel Tank Filter, Chain Brake Maintenance, Sprocket, Clutch, and Clutch Drum Maintenance, Sawdust Guard & Cooling fine, DSP Valve (PM650), Muffler & Exhaust Port, Automatic Chain Oiler, Guide Bar Maintenance *CHAIN MAINTENANCE - Chain Tension, New Chain Break-In, Chain Lubrication, Chain Sharpening, Lowering Depth Gauges, File Size Table *PREVENTIVE MAINTENANCE *ACCESSORIES - Spike Kit, Carrying Case, Chain, Bar & Sprocket Oil *FEATURES AND SPECIFICATION - Displacement, Bore & Stroke, Spark Plug Type, Fuel Tank Capacity, Oil Tank Capacity, Intake System, Clutch Engagement Speed, Lamination Gap, Ignition, Timing, Main Bearings, Connecting Rod Bearings, Sprocket Type, Weight PM610 & PM650 * TORQUE VALUES - Connecting Rod Screws, Clutch Nut, Flywheel Nut