2004 Husqvarna 570 / 575XP Chainsaw Workshop Manual (P/N 114 02 91-26)

This November 2004 Husqvarna workshop manual covers the 570 and 575XP chainsaws, including the 575XPG variant with heated hand grips and a carburetor heater. The document bears code 114 02 91-26.

Text search and electrical illustrations: PDF text is searchable. There are no embedded bookmarks. Labels in the heater wiring and electrical connection illustrations are legible.

• Engine repair: Piston and cylinder inspection, crankcase splitting, crankshaft and main-bearing replacement, seal service, and crankcase/cylinder pressure testing.

• Carburetor service: Zama C1M-EL28 disassembly, inspection, reassembly, leak testing, and EPA II basic adjustments for capped high- and low-speed needles.

• Electrical system: Ignition module and flywheel service, ignition air-gap adjustment, stop-switch testing, and 575XPG hand-grip and carburetor-heater troubleshooting.

• Safety equipment and starter: Chain-brake rebuilding and function checks, chain-catcher inspection, muffler and throttle-lock service, and starter cord and spring replacement.

• Clutch and lubrication: Centrifugal-clutch inspection and assembly, oil-pump overhaul, and inspection of the oil pickup, filter, hoses, and seals.

• Tank and anti-vibration system: Fuel-tank removal and installation, fuel-hose replacement, tank-vent information, and cylinder and tank-unit spring replacement.

The manual assumes general knowledge of small-engine repair and service and is also suitable for training new employees.

Zama Carburetor and Fuel-System Diagnosis

Carburetor cutaway views explain the metering unit, mixing venturi, and pump unit through cold-start, idle, part-throttle, and full-throttle operation. These introductory drawings illustrate operating principles rather than the exact carburetor fitted to the saw.

The pressure-test illustration and leakage-to-fault table help distinguish needle-valve leakage from pump- or control-diaphragm faults before disassembly. EPA II adjustment instructions address replacement carburetors and needles, model-specific high-speed settings, and the effect of speed-limited ignition on tachometer readings.

The tank section explains the two-way vent valve and its pressure specifications. It warns that compressed-air cleaning or testing can damage the valve's internal components.

Ignition and 575XPG Heater Circuits

The heater wiring illustration identifies the generator, switch, front and rear heating elements, carburetor heater, and thermostat connections. Troubleshooting covers contact oxidation and electrical test values; the carburetor heating element and thermostat are replaced together.

Flywheel and ignition air-gap views accompany the assembly instructions. The flywheel-removal section warns that driving the puller screws too deeply can damage the generator.

Piston, Cylinder, and Crankshaft Repair

Piston and cylinder inspection covers scoring, cylinder-coating wear, piston-ring end gap, and connecting-rod needle bearings. Fault-and-cause lists address piston scoring, carbon buildup, and ring breakage. Pressure-test drawings show the crankcase/cylinder test setup and separate decompression-valve testing.

Intake-manifold illustrations distinguish the fuel/air-mixture inlet, separate air inlet, and impulse-hose connection. Bottom-end repair extends to crankcase separation, crankshaft main-bearing replacement, seal replacement on both sides, and bar-bolt replacement.

Chain Brake, Clutch, and Lubrication

Clutch inspection includes shoe-lining wear, drum condition, needle bearings, and chain-drive sprocket wear. Oil-pump views identify the pump piston, adjustment screw, and worm drive. Anti-vibration guidance distinguishes the harder springs intended for longer guide bars and refers spring part numbers to the illustrated parts list.

Before beginning teardown, review the safety precautions and symbol identification, particularly for flammable fuel and tensioned starter and chain-brake springs.

Service Data, Tools, and Scope

Service-data exploded views combine fastener torques with lubrication symbols. Technical data and inspection sections provide tank capacities, ignition settings, electrical test specifications, and wear limits. Some torque figures in the overview differ from those in the detailed assembly sections.

The illustrated service-tool list includes the 502 52 49-01 crankcase splitting tool and 502 50 30-20 crankshaft assembly tool, with their applications and order numbers.

Oil-pump feed-rate adjustment and routine bar-and-chain procedures are referred to the separate Operator's Manual. The introduction also calls for the applicable service information covering later production changes.

English PDF and Included Pages

Supplied as one printable 54-page PDF: 51 pages of introductory, safety, technical, and repair content, one contents page, one front cover, and one back cover. All cover and contents pages are included in the total.