Systems Covered:
Engine mechanical, engine management, fuel system, lubrication system, cooling system, exhaust system, transmission, clutch, chassis, suspension (front and rear), brakes (front and rear), electrical system, ignition system, lighting, instruments, wiring diagrams, bodywork, maintenance, troubleshooting, diagnostics, specifications.
Estimated Page Count:
400-600 (typical for this class of service manual)
Manual Type:
Service Repair Workshop Manual
Engine Mechanical:
Detailed procedures for engine disassembly, inspection, overhaul, piston, rings, cylinder head, valves, camshaft, crankshaft, connecting rods, engine balancing, timing chain, and more.
Engine Management:
Information on ECU, sensors (TPS, MAP, IAT, O2), fuel injectors, ignition timing, diagnostic trouble codes (DTCs), and basic EFI troubleshooting.
Fuel System:
Fuel pump testing, fuel pressure regulation, fuel filter replacement, fuel injector cleaning and testing, fuel tank service.
Lubrication System:
Oil pump operation, oil filter replacement, oil pressure testing, oil capacities and specifications.
Cooling System:
Radiator service, coolant specifications, water pump inspection and replacement, thermostat operation, fan system.
Exhaust System:
Muffler and header pipe inspection and maintenance, exhaust gasket replacement.
Transmission:
Gearbox disassembly, inspection, repair, shift mechanism, gear ratios (specific to 250R and 310R), transmission fluid specifications and capacity.
Clutch:
Clutch plate inspection and replacement, clutch lever adjustment, hydraulic clutch system (if applicable) bleeding and service.
Chassis:
Frame inspection, swingarm maintenance, linkage bearing service, footpeg and control lever adjustments.
Suspension Front:
Fork oil change, seal replacement, spring preload adjustment, damping adjustments (compression and rebound), fork tube inspection.
Suspension Rear:
Shock absorber service, linkage bearing lubrication and replacement, rear spring adjustment, damping adjustments.
Brakes Front:
Brake pad replacement, caliper overhaul, brake disc inspection and measurement, brake fluid specifications and bleeding procedures.
Brakes Rear:
Brake pad replacement, caliper overhaul, brake disc inspection and measurement, brake fluid specifications and bleeding procedures.
Electrical System:
Battery maintenance, starter motor, charging system (stator, regulator/rectifier), lighting circuits, fuse locations and specifications.
Ignition System:
Spark plug specifications, ignition coil testing, CDI unit (if applicable) information.
Wiring Diagrams:
Comprehensive electrical schematics for all systems, including troubleshooting flowcharts.
Bodywork:
Fairing removal and installation, seat service, fuel tank removal and installation, handle bar and control assembly.
Preventive Maintenance:
Detailed schedules for oil changes, filter replacements, chain maintenance, brake checks, suspension service, and general inspections.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon issues, including symptom-based troubleshooting guides.
Repair Procedures:
Step-by-step instructions for component disassembly, repair, reassembly, and adjustment.
Component Replacement:
Guides for replacing parts such as brake pads, clutch plates, air filters, oil filters, spark plugs, seals, and bearings.
Engine Rebuild:
Comprehensive instructions for complete engine overhauls, including torque specifications for critical fasteners.
Suspension Tuning:
Guidance on adjusting suspension settings for different riding conditions and rider preferences.
Electrical Diagnostics:
Methods for testing circuits, components, and sensors using multimeters and diagnostic tools.
Depth Of Coverage:
In-depth, professional level, suitable for experienced mechanics and advanced DIY enthusiasts. Covers everything from basic maintenance to complete engine and transmission rebuilds.
Engine Type:
Four-stroke, single-cylinder, liquid-cooled
Bore Stroke Txc250R:
76 mm x 55 mm (approximate, requires manual confirmation)
Bore Stroke Txc310R:
82 mm x 56.5 mm (approximate, requires manual confirmation)
Displacement Txc250R:
249.5 cc (requires manual confirmation)
Displacement Txc310R:
302.4 cc (requires manual confirmation)
Compression Ratio:
Typically around 12.5:1 to 13.5:1 for this engine class (requires manual confirmation)
Horsepower Txc250R:
Estimated 40-45 HP (requires manual confirmation)
Horsepower Txc310R:
Estimated 45-50 HP (requires manual confirmation)
Torque:
Specific torque figures will be detailed in the manual, generally higher for the 310R model.
Fuel Delivery:
Electronic Fuel Injection (EFI) with Keihin throttle body (typical for this era Husqvarna).
Fuel Type:
Unleaded gasoline, minimum 91 octane (RON+MON)/2 (AKI) or higher recommended.
Fuel Pump Type:
In-tank electric fuel pump.
Oil Change Interval:
Typically every 15-20 hours of riding or annually (specific interval in manual).
Air Filter Cleaning:
Recommended after every few rides, or more frequently in dusty conditions (specific instructions in manual).
Chain Maintenance:
Lubricate and adjust chain tension regularly, typically every 500-1000 km or as needed (specifics in manual).
Spark Plug Replacement:
Refer to manual for specific mileage or hours interval. Typically inspect every 100 hours.
Valve Clearance Check:
Critical periodic maintenance, typically recommended every 100-200 hours or annually (specific interval in manual).
Engine Oil Type:
JASO MA certified motorcycle specific 4-stroke engine oil, typically 10W-50 or 10W-40 (confirm with manual).
Engine Oil Capacity:
Approximately 1.1 - 1.3 liters (refer to manual for exact capacity and procedure).
Coolant Type:
High-quality ethylene glycol-based coolant for motorcycles, mixed 50/50 with distilled water.
Brake Fluid Type:
DOT 4 hydraulic brake fluid.
Fork Oil Type:
Specific suspension fluid (e.g., 5W or 7.5W) as specified by the suspension manufacturer (refer to manual).
Transmission Oil Type:
Motorcycle specific transmission oil or SAE 75W-90 gear oil (confirm with manual).
Common Wear Items:
Clutch plates, wheel bearings, steering head bearings, linkage bearings, fork seals due to off-road use.
Potential Engine Issues:
Valve clearance tightening, timing chain wear (requires diligent maintenance).
