2001–2007 Honda NSS250/A, NSS250S/AS Reflex Service Manual (P/N MSV 11760 (0612))

• Covers the 2001–2007 Honda NSS250, NSS250A, NSS250S, and NSS250AS Reflex range in a 401-page PDF of Honda publication code MSV 11760 (0612), including LBS and ABS brake configurations.
• Details engine removal and installation, cylinder-head and valve repair, piston and cylinder inspection, crankcase separation, crankshaft checks, and camshaft/timing assembly.
• Provides in-frame drivetrain service for the drive pulley, driven pulley, V-belt, centrifugal clutch, final-reduction gears and bearings, altern始化..., flywheel, and starter clutch.
• Includes VE3BL carburetor overhaul, starting-enrichment пир diagnosis, pilot-screw and high-altitude adjustment, oil-pump Lula inspection, cooling-system pressure tests, coolant replacement, and water-pump service.
• Separates linked-brake and ABS work, with circuit-specific bleeding, delay-valve service, master-cylinder and caliper overhaul, parking-brake repair, ABS blink-code retrieval and reset, wheel-speed sensor and pulser-ring checks, and modulator replacement.
• Supplies four configuration-specific wiring diagrams—2001–2003 and post-2003, each in standard and ABS form—plus harness-routing views, troubleshooting flowcharts, torque tables, fluid data, wear limits, and electrical test specifications.

Across 25 numbered sections, Honda organizes this service and repair manual for qualified professional technicians who already have basic maintenance knowledge of Honda motorcycles, motor scooters, or ATVs, together with the proper tools and shop equipment. The issue page is dated February 2004; revised pages carry December 2006 coverage through the 2007 model year.

Variant and Revision Coverage

Model-specific routing drawings distinguish NSS250, NSS250A, and NSS250S/AS layouts. The body and chassis chapters call out NSS250/A rear-spoiler and body-panel work versus NSS250S/AS backrest, grab-rail, and handle-cover hardware. Post-2003 differences include alternator output, current-leak inspection limits, regulator/rectifier connectors, ignition-switch wiring, harness clamps, and dedicated later wiring diagrams.

Powertrain Repair Depth

The powertrain sections separate in-frame work from engine-out repair. The oil pump, carburetor, water pump, camshaft and rocker arms, CVT, final reduction, and alternator/starter clutch can be serviced with the engine installed. Cylinder-head removal, cylinder and piston service, and crankshaft/crankcase work require engine removal. Factory procedures cover compression testing, valve-guide replacement, valve-seat inspection and refacing, cam timing, piston and cylinder measurement, crankcase separation, final-drive bearing replacement, and reassembly checks.

The cooling-system section warns that silicate-inhibited coolant can prematurely wear water-pump seals or obstruct radiator passages. In the CVT, oil or grease on the V-belt and pulley faces can cause belt slippage, and the movable drive face and weight rollers must remain ungreased.

Linked Brakes, Parking Brake, and ABS

The hydraulic-brake chapter treats the front circuit, linked rear circuit, delay valve, three-piston front caliper, rear parking-brake caliper, and both master cylinders. For the linked system, it maps the separate bleed branches through the lower front-caliper and rear-caliper bleed points and explains the delay-valve resistance felt at the lever. Dedicated technical-feature pages show how the rear caliper’s auto-adjust and cable-operated parking-brake mechanisms work.

On ABS-equipped NSS250A/AS models, diagnosis runs from self-test and memory clearing through code-directed flowcharts for indicator faults, front and rear sensor circuits, pulser rings, solenoid valves, wheel-lock cases, pump/motor and fail-safe relay faults, incorrect tire size, and ECU/modulator failure. Sensor and pulser-ring inspection, ABS modulator removal and installation, and subsequent brake-system filling and bleeding are also covered.

Electrical Tests, Diagrams, and Factory Tools

Electrical fault-finding covers charging-system flowcharts, battery load and current-leak tests, alternator-coil checks, ICM and ignition-pulse peak-voltage tests, TP and ECT sensor measurements, starter-motor and relay inspection, switch continuity charts, fuel-pump output testing, and meter/sensor checks. Supporting references include the body-panel removal chart, lubrication-system diagram, cooling-system flow pattern, ABS system diagram, and model-specific cable and harness routing.

Factory tool references identify the valve spring compressor 07757-0010000, clutch spring compressor 07LME-GZ40200, case puller 07SMC-0010001, and peak-voltage adapter 07HGJ-0020100, along with the required bearing, seal, steering, and carburetor tools.

Work on brake and fuel systems, hot or pressurized cooling components, batteries, electrical circuits, and a supported scooter must follow Honda’s stated precautions and use the specified equipment and qualified shop judgment.