2010 HiSun HS800 UTV Service & Repair Manual PDF (P/N 40-3100-0000)

The 2010 HiSun HS800 service manual details vehicle maintenance and component repair for the HS800UTV platform, with its 800cc V-twin engine and steel tube chassis. Published by Chongqing Huansong Industries (Group) Co., Ltd., this is the first version, March 2010.

This English download is a 362-page PDF, including the foreword and contents pages. The written sections contain searchable text.

• Engine repair: Cylinder-head, valve, camshaft and piston service, crankcase work, starter-clutch inspection, valve-clearance adjustment, and compression and cylinder leak-down tests.

• CVT and gearbox: V-belt replacement, primary and secondary sheave service, output-shaft checks, shift-fork inspection, and high/low/reverse gearcase disassembly.

• Axles and chassis: Front and rear drive assemblies, CV joints, universal joints, steering-column checks, suspension-arm inspection, and shock-absorber replacement.

• Brake service: Front and rear caliper disassembly and reassembly, master-cylinder inspection, parking-brake adjustment, disc checks, and hydraulic brake bleeding.

• Cooling and lubrication: Radiator-cap pressure testing, oil-cooler inspection, water-pump disassembly and seal installation, plus engine and gearbox lubrication diagrams.

• EMS and electrical diagnosis: Multec 3.5 injector service, fuel-module pressure checks, fault-code tables, starter and charging tests, and system circuit diagrams.

Written for dealers and technicians, the manual also explains basic tools and service methods; major disassembly calls for mechanical competence and suitable workshop equipment.

Engine Repair and Maintenance

Fastener guidelines, shop supplies, measuring-tool use, and basic service methods accompany the maintenance schedule. The documentation outlines chassis dimensions, fluid capacities, and factory torque settings, with wear limits and electrical test specifications.

The engine sections cover valve-seat work, valve-guide replacement, piston and ring inspection, timing-chain components, and oil-pump clearance checks. Compression and leak-down testing help distinguish sealing problems involving valves, rings, or the head gasket before major engine repair.

CVT and Driveline Repair

Exploded assemblies and inspection notes identify the sheave weights, sliding surfaces, shift drum, guide bars, and shift forks. Output-shaft gear-lash measurement is covered alongside universal-joint service.

The rear-drive section provides exploded views and refers back to the front-drive service methods.

Brakes, Steering and Suspension

Rear-caliper coverage includes the parking-brake mechanism, piston alignment, pad shims, and insulators. Brake repair cautions explain how unsuitable cleaning solvents can swell and distort the caliper seals.

Steering and suspension sections address tie-rod ends, ball joints, bushings, and stabilizers, with component removal and installation procedures.

Cooling System Service

Radiator coverage includes removal, pressure checks, and installation. The oil-cooler section identifies its hoses and fittings and covers blockage and damage checks.

Water-pump coverage extends to the impeller, shaft, bearing, oil seal, and mechanical seal, with special seal installers illustrated.

Engine Management and Electrical Troubleshooting

The EMS chapter covers the ECU, throttle body with stepper motor, intake pressure/temperature sensor, coolant-temperature sensor, oxygen sensor, and fuel-pump module.

Fuel-module diagnostic charts separate supply-voltage problems from pressure-related faults. The fault-code tables connect the instrument-panel display to sensor, injector, ignition-coil, and idle-control faults.

Injector cleaning and replacement procedures are included. Throttle-body cautions explain how holding the valve open with a tool can warp the valve or scratch the bore, affecting throttle return.

Electrical circuit diagrams cover ignition, electric starting, charging, lighting, signaling, and 2WD/4WD selection, with continuity checks and component test charts.

The separate overall HS800UTV wiring diagram listed on printed page 349 is not included in this PDF. The electrical chapter's individual system diagrams are included.

The ECU is treated as a non-serviceable part. Reflashing is referenced, but a reflashing procedure is not included.

Fuel-system and electrical work require the manual's precautions for pressurized gasoline and high-current circuits.

File Format and Readability

The total comprises 1 foreword page, 13 contents pages, and 348 numbered manual pages. These introductory pages are already included in the total; there is no separate cover or addendum.

PDF bookmarks are not provided. Small labels in the denser starting and signaling circuit diagrams require zooming, and some circuit lines are faint. Some diagram labels are graphics and are not text-searchable.