2001 Yanmar 6LY2 Series Marine Diesel Engine Service Manual

Yanmar 6LY2 Series Marine Diesel Engine — Technical Documentation

• Covers 2001 Yanmar 6LY2-STE, 6LY2A-STP, and 6LYA-STP marine diesel engines featuring vertical water-cooled 4-cycle architecture
• Official Yanmar publication P/N HINSI-H8-011-1, 1st revised edition dated June 2001
• Contains 85 technical exploded-view diagrams, 3 wiring schematics, and 22 diagnostic tolerance charts
• 234-page document organized for quick lookup of engine assembly, fuel injection timing, and governor component identification
• Fully indexed PDF delivers to your account within seconds of checkout
• Page spreads stay legible when printed at original size for shop-floor reference
• This 2001 first revised edition is the primary reference for the 6LY2-STE and 6LY2A-STP marine engine range, establishing factory-authorized maintenance and calibration parameters.

Engine Construction and Systems Overview

This factory manual details the construction and inspection procedures for the Yanmar 6LY2 series marine diesel engine. The text documents the internal components including cylinder head assembly, piston and ring dimensions, connecting rod tolerances, and crankshaft bearing specifications. The publication provides technical chapters covering the fuel injection pump construction, governor maintenance, turbocharger cooling system, and electrical system diagnostics for the engine.

Precision Data and Calibration Values

Specifications are provided for fuel injection timing, valve clearance limits, and bolt tightening torque values. Cylinder head bolt tightening follows a three-stage sequence specified at 216–236 Nm (22.0–24.0 kgf·m). Valve clearance for the intake is listed at 0.1 mm, while the exhaust is specified at 0.5 mm in the basic engine service table. The fuel injection pump plunger adjustment range is documented as 1.4–2.6 mm for proper delivery delivery. For further technical guidance on marine engine maintenance and service limits, consult the corresponding inspection schedules included in the text. Safety Note: This page is a contents overview for the manual. It does not provide repair or diagnostic instructions. An official 234-page Yanmar OEM workshop manual covering the 2001 6LY2-STE, 6LY2A-STP, and 6LYA-STP engines, documenting engine, chassis, electrical, and fuel-injection specifications for the HINSI-H8-011-1 build.