Honda GX270 General Purpose Engine Parts Catalogue 2006 (P/N 13ZH90E9)

• Covers GX270 standard/selective and propane builds, plus the GX270H, GX270T, GX270U/R, GX270UH, and GX270UT/RT branches in six separately identified Honda parts publications, with Parts Catalogue News sheets for corrections and added type coverage.
• Provides 197 indexed illustrated parts blocks for cylinder heads and barrels, crankcase covers, crankshafts, pistons and connecting rods, camshafts, recoil starters, fan covers, and gasket kits.
• Breaks out carburetor, air-cleaner, muffler, fuel-tank, flywheel, ignition-coil, starter-motor, control, control-box, auto-throttle, exhaust-pipe, and harness arrangements by catalog type.
• Maps straight, splined, threaded, and tapered output shafts to the applicable reduction, clutch, coil, Oil Alert, starter, fuel-tank, muffler, and control-box combinations.
• Includes model/type/engine-serial/carburetor-ID tables, serial-break applicability, required quantities, part-number and part-name indexes, and FRT/LON repair-operation references.

This 818-page PDF is a compiled parts-reference set for several GX270 branches, not a single 2006 catalog. Each section carries its own model/type matrix, illustrated index, part-number index, and part-name index.

Included Honda Publications

The appended Parts Catalogue News pages record corrected illustrations, part-number changes, application or serial corrections, and additional type releases. Examples include GX270H VSP/VX, GX270U HKS8, GX270R VNT2 and VW12, and GX270UT PXED, QHB4, and QXUZ coverage.

Serial-Specific Parts Identification

A GX270 model name by itself is not enough to order from these catalogs. The opening tables tie each parts catalog code to the stamped engine serial number and, for carburetor groups, the stamped carburetor identification number. Individual listings then show the exploded-view reference, Honda part number, description, required quantity, applicable type, and serial break.

The 13ZH90E9 section further separates standard equipment, selective equipment, and propane configurations. Selective codes L1, Q1, Q2, R1, S1, V1, and W1 are listed apart from propane HAP, RXP, VXP, and VXQP types. Propane HAP, RXP, and VXP applications split between GDAD-1000001–1099999 and the corresponding /A versions beginning at GDAD-1100001; VXQP is listed only for GDAD-1000001–1000029.

Broken-line boxes in the exploded views identify complete assemblies whose component parts are also listed separately. Dotted-line and arrow references direct the reader to related blocks. Together with the part-number, part-name, and illustrated indexes, this gives mechanics three practical routes to the correct repair part.

Illustrated Assembly Coverage

Across the six illustrated indexes, the set contains 197 block entries. The 2006 GX270/propane publication alone has 55, including six crankcase-cover layouts, four carburetor blocks, seven air-cleaner layouts, six muffler layouts, four fuel-tank layouts, three control-box groups, and three reduction groups.

Core engine blocks cover the cylinder head, cylinder barrel, crankshaft, piston, camshaft, governor hardware, oil seals, bearings, recoil starter, and fan cover. Within the 2006 section, cylinder-barrel assemblies are separated into standard, Oil Alert, self-starter, balancer, and combined balancer/self-starter/Oil Alert builds. External systems extend through fuel tanks, flywheels, ignition coils, starter motors, controls, auto throttle, emergency-stop switches, kill switches, sub-harnesses, under-frame parts, labels, tool groups, gasket kits, exhaust pipes, and muffler covers.

Output, Reduction, and Equipment Variants

The 2006 GX270 feature matrices distinguish 25 mm and 25.4 mm straight shafts, a 20 mm spline, M20 stepped-thread and 1-inch threaded outputs, and M10 or 5/16-inch tapered versions. Reduction coverage includes 1/2 reduction units, 1/2 reduction units with clutch, and 1/6 reduction units. The same tables identify lamp- or charge-coil provisions, fuel tanks, control boxes, starter motors, and Oil Alert equipment.

Other publications add their own equipment splits: semi-dry, oil-bath, and dual air cleaners for GX270H; standard and silent muffler arrangements, spark-arrester and exhaust-pipe differences for GX270T; and standard, silent, or generator muffler configurations for GX270UT/RT. These combinations are tied to type codes and should not be selected from shaft appearance or engine displacement alone.

Service References and Manual Scope

FRT and LON entries support repair planning by linking exploded-view reference numbers to factory labor operations. The prefaces identify cylinder-head removal and installation, valve-clearance adjustment, throttle/governor adjustment, carburetor idle adjustment, engine-oil inspection and change, air-cleaner service, spark-arrester cleaning, spark-plug service, and carburetor overhaul. Individual parts blocks carry additional component-specific replacement operations.

This is a parts-catalog set, not a step-by-step repair manual. The FRT section states that work methods are based on a separate Honda Service Manual. Use these publications to identify the correct repair parts and applicable labor operations; use the corresponding service literature for disassembly sequence, inspection methods, settings, and final repair checks.

Do not match parts by illustration shape alone; Honda states that the drawings are reference aids and may differ from the actual components. Cylinder-barrel and crankcase-cover assemblies vary with Oil Alert, starter, balancer, governor, and bearing layouts, so a visually similar housing can be wrong for the build. The hose section specifically prohibits substituting general-purpose or vinyl hose for fuel hose because the wrong hose creates a fuel-system safety hazard.