Kohler K482/K532/K582/K662 1969–1982 Engine Service Manual Collection (P/N ENS-607)

ENS-607 provides the service information for the twin-cylinder engines named on this listing. The other publications cover separate engine families; match the engine model and specification to the appropriate volume before selecting parts or procedures.

The CH26 material in the Command horizontal-crankshaft volume covers its EFI system; the base engine chapters identify CH18, CH20, CH22 and CH25.

PDF Search, Chapter Navigation and Page Count

Search and diagram detail: Text search is available in the Courage, Command CV11–16/CV460–465/CV490–495, Command Pro CS and AEGIS vertical volumes. The Command horizontal and AEGIS horizontal volumes are partly searchable; the other PDFs have no text search. Eleven files contain chapter bookmarks. Dense wiring labels require zooming, and the small installation notes on the AEGIS horizontal EFI schematic remain pixelated.

ZIP download containing 17 printable English PDFs and 2,118 pages in total, including original covers and front matter, 18 blank or header-only pages, one repeated Command title page, and four K361 service-bulletin pages.

Twin-Cylinder Overhaul, Fuel Systems and Electrical Diagnosis

The following selected contents highlight the repair coverage. Other topics include engine storage and the construction of a U-tube water manometer.

• Internal overhaul: Step-by-step teardown, inspection, reconditioning and reassembly procedures for the cylinder block, crankshaft, pistons, connecting rods and valve mechanisms.

• Fuel and lubrication: Sidedraft and downdraft carburetor reconditioning, automatic choke service, mechanical fuel-pump repair, oil-filter arrangements and oil-pressure diagnosis.

• Governor and ignition: Constant- and variable-speed governor adjustment, governor-to-engine timing, breaker-point service and K662 magneto timing.

• Starting and charging: Wiring diagrams, starter-drive diagnosis, battery and regulator tests, and alternator troubleshooting charts.

• Gas fuel systems: Gas/gasoline adapters, gas-carburetor overhaul and regulator service for natural-gas and LPG configurations.

• Clutch and cooling options: Wet-clutch reconditioning, clutch–gear reduction service and Air-Vac cooling with thermostatic shutter components.

The overhaul measurements and electrical tests suit experienced small-engine technicians and rebuilders. Gas-system repair and magneto reconditioning require the specialist qualifications specified in those chapters.

Engine Condition and Rebuilding Decisions

Crankcase-vacuum and compression-test charts connect low readings with breather faults, worn seals, blowby, valve leakage and cylinder-head problems. These checks help distinguish external service needs from conditions that call for internal reconditioning.

Inspection guidance relates sludge, cylinder scoring and piston damage to lubrication, cooling and combustion conditions. Rebuilding coverage includes deglazing or reboring, service-size pistons and rings, crankpin inspection, connecting-rod replacement options, valve-guide and seat work, and cylinder-head flatness checks.

Crankshaft configurations: K482/K532 sleeve-bearing and rear ball-bearing arrangements use different end-play controls. K662 engines use tapered roller bearings and oil-transfer sleeves. Cross-sectional views and closure-plate instructions distinguish the assemblies.

Oil pumps are sealed replacement units. For damaged starter ring gears, the manual specifies replacement of the complete flywheel.

Carburetors, Governors and Gas Equipment

Gasoline coverage distinguishes adjustable and fixed-main-jet sidedraft carburetors from K662 Zenith Model 28 and 228 downdraft units. Separate instructions cover diaphragm fuel-pump reconditioning and the two electric-thermostatic automatic-choke arrangements.

The K482/K532 governor carries the breaker-point mechanism and must be timed to the engine after removal. The K662 governor uses a different installation and adjustment arrangement. Constant-speed electric-plant settings, variable-speed industrial operation and the K662 welder governor compensator receive separate treatment.

Gaseous-fuel configurations: KG1, XG and PC2-10 carburetors are covered alongside F1/KN secondary regulators and the RCB two-stage regulator. Combination gas/gasoline systems, diaphragm replacement and regulator fault analysis are included.

Ignition, Starting and Charging Tests

Alternator fault charts distinguish stator-winding, rectifier-diode and regulator problems. Starting-system coverage separates Bendix and solenoid-shift drives, with exploded views, brush and commutator inspection, pinion engagement checks and mounting alignment information.

K662 ignition coverage distinguishes simultaneous-firing and distributor-type magnetos, including radio-shielded versions. Battery-ignition chapters cover breaker points, coils, condensers and timing-light checks.

K361 Service, Overhaul and Incorporated Updates

Identification and diagnosis: The K361 volume covers a single-cylinder, horizontal-crankshaft overhead-valve engine. It decodes oil-pan, clutch, pump, Quiet, electric-start, retractable-start and rope-start configurations. Its manufacturing-year chart runs from 1969 through 1978 and explains the shared first-digit code for 1975 and 1976.

Engine Analysis covers hard starting, power loss, overheating, backfiring, high-speed miss, erratic running and poor idle, with crankcase-vacuum and compression checks. Fuel coverage includes side-draft carburetor adjustment and reconditioning, mechanical-pump testing, gravity-feed applications, the optional thermo-electric automatic choke and fuel-shutdown solenoid.

Electrical and governor service: Constant- and variable-speed governor setup, static and timing-light ignition procedures, coil and condenser tests, permanent-magnet starter service, and the 3 Amp, 3/6 Amp and 15 Amp charging systems are covered. Illustrations include the Side Draft Carburetor, Schematic of a Typical Battery Ignition System and 15 Amp System Wiring Diagram.

Internal repair: Cylinder-head inspection addresses flatness, valve and seat condition, guide wear, spring inspection and valve reconditioning. Piston and ring damage analysis covers lubrication, cooling, detonation, preignition and abrasive contamination, with service-size pistons and rings, undersize connecting rods, crankpin inspection and cylinder deglazing or reboring.

Reassembly covers the crankshaft, camshaft, tappets, bearings, balance gears, governor gear, connecting-rod match marks, ring orientation, end-play shimming and oil seals. Tool Y-357 is identified for balance-gear timing; dimensional drawings support fabrication of a seal sleeve and seal driver.

The Exploded View of Typical PM Starter, ACR Operation and Final Check for Crankshaft to Balance Gear Timing illustrations accompany the relevant procedures. Component torque tables, head-bolt sequences, fitted clearances and wear limits provide the assembly references.

Service bulletins: Bulletin 144 adds valve-guide replacement and finishing procedures for heads with and without the Teflon exhaust-valve seal. Bulletin 154 identifies rocker-arm housing gasket 45 041 14 as the replacement for 45 041 08 and 45 041 13, with configuration-specific fastener information.

Improper flywheel handling can crack the flywheel or its fins and weaken the threaded crankshaft end. Bulletin 142 warns that force applied to the Teflon seal body or spring distorts the exhaust-valve seal and causes failure.

K361 alternator service centers on diagnosis and component replacement: the systems have no adjustments, their components are not interchangeable, and field repair is not recommended. Permanently stuck or excessively worn ACR flyweights require camshaft replacement. This K361 volume is a service and overhaul publication, not a replacement-parts catalog.

Before repair work, isolate the battery and spark-plug lead. Cooling shrouds must remain installed during operation because they direct airflow across the engine and prevent heat damage.

Command EFI and AEGIS Cooling Coverage

The separate EFI chapters contain sensor tests, throttle-position-sensor initialization and fault-code diagnosis. The AEGIS volumes add cooling-system leakage tests, radiator and cap checks, thermostat testing, coolant-pump service and belt inspection for their respective liquid-cooled engines.

Selected Ring-Gap and Cold Exhaust-Valve Specifications

Piston-ring data for K482/K532/K582/K662 list an end gap of 0.010–0.020 in. in a new bore and a maximum of 0.030 in. in a used bore. These appear alongside ring-side-clearance and piston-fit data.

Cold exhaust-valve clearance is 0.017–0.020 in. for K482/K532/K582 and 0.015–0.017 in. for K662. The valve tables also provide guide-wear limits and minimum-lift specifications.