1991-2001 Honda GX240K1 / GX270 / GX340K1 / GX390K1 Service Manual

• Fits 1991–2001 Honda GX240K1, GX270, GX340K1, and GX390K1 engine models with various reduction and starting configurations
• Official Honda OEM publication P/N 61ZH910, July 2001 edition
• Provides comprehensive reference material for professional engine repair and standard maintenance tasks
• Contains detailed technical specification tables, exploded-view diagrams for all engine systems, and electrical wiring schematics
• Available as an instant download immediately after payment clears
• Fully searchable 111-page digital format, laid out for standard letter and A4 printing

Technical Overview and Documentation

The 1991–2001 Honda GX-series manual delivers an extensive breakdown of engine components and mechanical systems. Chapters detail the exact layout of the recoil starter, fan cover, carburetor, fuel tank, governor, flywheel, ignition coil, starter motor, cylinder head, valves, crankcase cover, and reduction units. For mechanics and technicians, having this exact OEM data on hand eliminates guesswork in the workshop, significantly speeding up workflow during routine service or a major engine repair. Since working on fuel systems and rotating assemblies carries inherent risks, referencing the manufacturer-specified safety limits and handling procedures outlined in these pages is essential before turning any wrenches. The documentation maps out component-level specs and system functions clearly without relying on generic descriptions.

Specification Highlights

This publication serves as the definitive reference for the K1-series engine lineup, documenting ignition, cooling, and fuel system specifications. You will find comprehensive data tables for engine assembly and tuning. For instance, the cylinder head specification table lists the intake valve clearance at 0.15 ± 0.02 mm. The GX340K1 engine requires a fixed ignition timing of 20° BTDC. When securing components, the manual documents a maximum flywheel nut torque of 113 N·m (83 lbf·ft) for the GX240K1. Other vital measurements include the 35 mm intake valve head diameter on the GX390K1 and a specified cylinder compression of 0.59–0.83 MPa (85–121 psi) at 600 min⁻¹ for the GX270. Reference values for resistance, clearances, and torque settings are organized systematically for all four engine variants.