2006 Suzuki LT-R450 QuadRacer R450 Service Manual

450cc liquid-cooled DOHC engine specifications, fuel injection diagnostics, and complete chassis service procedures with torque data and adjustment intervals.

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Document Details

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Document Number / Seller:
24403 / Kathleen Harris
File Size:
143.79 MB
File Type:
PDF
Language:
English
Pages:
428
Printable:
Yes
Category:
ATV
Last updated / verified
Jun 29, 2025

Models Covered & Key Technical Specifications

Suzuki LT-R450 / QuadRacer R450 (2006) Precision Technical Blueprint | QuadRacer R450 Series Repository.

  • Engineered Native Resolution: 450 cm³ (27.5 cu. in) is calibrated to the engine displacement specifications Benchmarks.
  • Design Clamp Forces: Compression ratio supports 11.7:1 for optimal combustion chamber pressure Range.
  • Documented Fluid Levels: Bore establishes 95.5 mm (3.760 in) maximum cylinder diameter Sequences.
  • Principal Wattage Specs: The stroke requires 62.8 mm (2.472 in) is designed for piston travel Baseline.
  • Advanced Cold Start Limits: Idle speed is specified as 1,800 ± 100 r/min defines engine rotation threshold Requirements.
  • Primary Scan Resolution: Fuel tank capacity reaches 10.0 L (2.6 US/2.2 Imp gal) Parameters Threshold.

Professional Workshop Service Manual & Technical Specifications

Commercial Service Overhaul Manual: 2006 Suzuki LT-R450 / QuadRacer R450 Wiring-Compendium

Product-Line: Suzuki LT-R450 (2006), Suzuki QuadRacer R450 (2006) // Specification-Class: Fuel Injection and Transmission Logic Systems // Assembly-Group: Engine, Cooling, Electrical, and Chassis Subsystems.

Integrated-Framework Value Context
Engine Type Four-stroke, liquid-cooled, DOHC Complete specifications provided
Displacement 450 cm³ (27.5 cu. in.) Factory reference data included
Fuel System Fuel injection with electronic control System architecture documented
Transmission 5-forward speeds, foot-operated Gear ratios and specifications listed
Cooling System Liquid cooling with thermostat control Radiator and water pump procedures covered

Technical units are distributed across diagnostic procedures, component specifications, and system integration protocols. The manual encompasses fuel injection system diagnosis, encompassing crankshaft position sensor circuit analysis, intake air pressure sensor evaluation, throttle position sensor calibration, and engine coolant temperature sensor data. Drive train documentation covers transmission gear specifications, clutch assembly procedures, and primary/final reduction ratio reference data. Chassis systems include front and rear suspension architecture, brake system component specifications, and steering geometry parameters.

Core Interface

Tool requirements are listed for engine removal, transmission disassembly, and brake system service. The document provides detailed component identification across all major systems, including part numbering references for replacement parts. Cooling system architecture includes radiator specifications, water pump bearing configurations, and thermostat valve opening temperature data.

Structured Sequences

Installation guidelines are provided for engine mounting brackets, cylinder head fastener sequences, and crankcase assembly procedures. Compression pressure specifications and oil pressure measurement protocols establish baseline engine condition parameters. The manual documents torque specifications for the camshaft journal holder bolts to ensure proper bearing alignment and oil clearance maintenance.

Precise Protocol

Maintenance guidelines are included for periodic service intervals, including air cleaner inspection at three-month intervals, valve clearance verification every six months, and engine oil replacement schedules. The document covers brake fluid specification requirements (DOT 4 classification), battery initial charging procedures, and electrical connector inspection protocols. Radiator hose routing and coolant circulation pathways are illustrated with reference to specific cooling system components.

Advanced Benchmarks

OEM guidelines are included for spark plug gap adjustment, fuel filter maintenance, and brake pad replacement scheduling. Electrical system diagnostics reference FI light indication patterns, diagnostic trouble code interpretation, and self-diagnosis function operation in both user and dealer modes. The manual provides specifications for front tire pressure (45 kPa), rear tire pressure (45 kPa), and drive chain slack adjustment (45-55 mm standard).

Integrated Interface

Transmission service information covers countershaft and driveshaft assembly procedures, gearshift fork clearance specifications, and transmission gear inspection criteria. Rear axle assembly documentation includes bearing installation sequences, sprocket flange alignment procedures, and parking brake adjustment protocols. The manual documents torque specifications for the rear axle nut to ensure proper cyclic stress resistance and bearing preload integrity.

FAQ

Check the **standard** valve clearance specification for intake valves? keyboard_arrow_down

0.10 - 0.20 mm (0.0039 - 0.0079 in) when engine is cold, measured at the intake side camshaft position during compression stroke on the TDC mark.

What does the **necessary** adjustment require for throttle cable play? keyboard_arrow_down

3 - 5 mm (0.12 - 0.20 in) clearance at the throttle lever end before pressure is felt, adjusted by turning the lock-nut adjuster after loosening initial fasteners.

Reference the **recommended** fuel pressure specification for the injection system? keyboard_arrow_down

294 kPa (2.94 kgf/cm², 41.81 psi) absolute fuel pressure maintained between fuel pressure regulator and delivery pipe during operation.

What are the **calibrated** assembly sequence torque values for cylinder head bolts? keyboard_arrow_down

Initial tightening 25 N·m (2.5 kgf·m, 18.0 Ib·ft), followed by final tightening 47 N·m (4.7 kgf·m, 34.0 Ib·ft) applied diagonally in stages.

Specify the **applicable** service interval parameter for spark plug replacement? keyboard_arrow_down

18 months replacement interval required, with CR8EB standard plug type specification and 0.7 - 0.8 mm (0.028 - 0.031 in) gap setting for optimal engine performance.

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Rated 4 out of 5 stars
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The download process was seamless, and I received my access link almost instantly. Also, their support team was very responsive when I had questions. Excellent service!
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This manual has been a lifesaver for maintaining my ATV. The step-by-step instructions are crystal clear, and the illustrations are incredibly helpful!
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I appreciate the thorough coverage of the electrical system. The troubleshooting section helped me fix an issue quickly. Highly recommend!