Honda GX120K1 Engine Parts Catalog (P/N 13ZH70E9)

This 7,383-page PDF is a compiled collection of 43 Honda general-purpose engine parts catalogs, not a single 2004 GX120K1 booklet. The catalog title pages span 2002 through 2008; those are publication or revision dates, not blanket model-year coverage for every engine. Coverage runs from the GX120 through GX670 families and includes K1, T/T1, U/U1, UT/UT1, H/UH, R/RT, electronically controlled, and propane configurations where listed. It is best suited to parts-counter staff, technicians, and experienced owners who can match the engine model, type code, and serial information before choosing repair parts.

• Application tables cross-reference engine models, type codes, parts-catalog codes, and applicable engine and carburetor serial numbers before a part number is selected.
• Core-engine exploded views cover cylinder heads and barrels or blocks, crankcase covers, crankshafts, pistons and connecting rods, camshafts, valve gear, governors, and gasket kits.
• Fuel, intake, and exhaust coverage identifies carburetor variants, air-cleaner arrangements, fuel tanks and pumps, mufflers, spark arresters, and propane-specific assemblies.
• Starting and control sections map recoil and electric starters, flywheels, ignition coils, Oil Alert components, control boxes, combination switches, wire harnesses, and GX440 electronic-control parts.
• Drive and equipment-specific groups include reduction drives with and without clutches, transmissions, hydrostatic transmission parts, PTO-related hardware, oil tanks, brake panels, batteries, and remote-control components.
• Cooling-system detail extends beyond the usual fan-cover parts: the GX360K1 catalog includes the timing belt and water pump, thermostat, radiator, oil pump, and duct or engine-mounting groups.
• Illustrated indexes, part-number and part-name indexes, required-quantity columns, Flat Rate Service Time listings, and appended Parts Catalogue News sheets support catalog navigation and revision checking.

Parts Identification and Revision Control

Each exploded view is paired with Honda part numbers, descriptions, reference numbers, required quantities, model/type applicability, and serial breaks. A blank type column means the listing applies to every type covered by that catalog; parenthesized quantities and entries marked N identify optional or selected-as-needed parts. Broken-line groupings show assemblies that can be ordered complete, while address numbers tie the illustration back to the part-number and part-name indexes.

Do not assume that two parts interchange because their drawings look alike. Honda states that the illustrations are reference aids and may differ from the actual part in shape, so the catalog code, type column, and serial range remain the controlling checks. This matters most in the many carburetor, control, recoil-starter, air-cleaner, fuel-tank, muffler, and reduction-drive variations.

Service-Time References and Scope

The FRT pages identify labor operations and standard-time categories for removal and installation, adjustment, inspection or measurement, overhaul, cleaning, and selected electrical diagnosis. Depending on the catalog, the listed operations include cylinder-head and valve work, crankshaft/piston/camshaft replacement, carburetor overhaul and float-level adjustment, governor or throttle adjustment, spark testing, and starter or ignition service.

These entries are estimating references, not step-by-step repair procedures. The collection directs users to the separate Honda service manual for work methods and does not provide complete disassembly sequences, torque tables, wear limits, wiring diagrams, or diagnostic flowcharts. Use the parts catalogs to establish the correct component and revision, then use the applicable service literature for the repair itself.

Included Catalogs and Page Counts

The catalog sections total 7,382 pages, preceded by one branded introductory page:

Small-engine repair involves fuel, ignition, hot surfaces, and rotating components. Stop and isolate the engine before service, and use the correct Honda service manual or a qualified technician for work beyond parts identification.