2003 Suzuki LTZ400 K3 Service Manual

2003 Suzuki LT-Z400K3 Technical Scope

• Covers 2003 Suzuki LT-Z400K3 all-terrain vehicle specifications, maintenance schedules, and engine overhaul procedures.
• Official OEM publication P/N 99500-20502.
• Contains 378 pages of technical data, exploded-view diagrams, torque specifications, and periodic maintenance charts.
• File is accessible from your device as soon as the order is placed.
• Laid out for standard letter and A4 printing.
• Indexed PDF search covers every chapter and appendix.
• This 2003 first edition provides the primary factory data for the initial LT-Z400 series launch.

Engine and Maintenance Overview

The 2003 Suzuki LT-Z400K3 service manual provides technical insight into the liquid-cooled, DOHC four-stroke engine system. Content details include periodic maintenance requirements such as valve clearance adjustments, engine oil and filter change intervals, and spark plug inspection standards. The documentation covers chassis-related tasks including brake fluid classification, drive chain adjustment protocols, and suspension component inspection. Exploded diagrams illustrate assembly and disassembly sequences for the crankcase, transmission gears, and clutch components, highlighting correct sealant application points and bolt torque values.

Specification Highlights

The manual documents engine identification specs, listing a bore of 90.0 mm and a compression ratio of 11.3:1. Idle speed is specified at 1500 ± 100 r/min. Intake valve clearance is listed at 0.10–0.20 mm in the engine specification table. Crankcase bolt torque values are documented at 11 N-m (8.0 lb-ft) across the specified assembly stages. Coolant system capacity for the 2003 LT-Z400K3 is documented at 1.2 liters. Exhaust valve clearance is listed at 0.20–0.30 mm in the engine specification table.

Note: This page is a contents overview for the manual. It does not provide repair or diagnostic instructions. An official 378-page Suzuki OEM workshop manual covering the 2003 LT-Z400K3, documenting engine, chassis, electrical, and maintenance specifications for this quad build.