1999 John Deere 325, 335, 345 Lawn and Garden Tractor Technical Manual PDF (P/N TM1760)

John Deere technical publication P/N TM1760, dated May 28, 1999, covers the 1999 John Deere 325, 335, and 345 lawn and garden tractors, serial number 70001 and up. It organizes diagnosis, tests, adjustments, and repair procedures by system.

• Engine repair: Dedicated FH531V, FH601V, and FD611V sections cover engine removal, carburetor overhaul, cylinder-head work, internal inspection, and reassembly.

• Cooling system: The liquid-cooled 345 section includes cooling-system and radiator-cap pressure tests, thermostat inspection, and water-pump disassembly and repair.

• Electrical diagnosis and PTO: Model-specific wiring diagrams, starting and charging tests, interlock troubleshooting, and electric PTO clutch testing, adjustment, and replacement.

• Hydrostatic power train: Kanzaki K70A transaxle removal, disassembly, inspection, and assembly, plus neutral-creep adjustment, drive-belt service, and internal brake inspection.

• Steering and hydraulics: Manual steering gearbox overhaul for the 325, power-steering diagnosis for the 335/345, and hydraulic lift control-valve repair.

• Mower attachments: Deck removal, leveling, spindle service, belt replacement, and blade inspection, supported by component views and troubleshooting charts.

This manual is written for experienced technicians, with diagnostic work that calls for electrical test equipment and mechanical measuring tools.

Engine Overhaul, Fuel System, and Cooling

The air-cooled FH531V and FH601V chapters distinguish the 325 and 335 engine procedures from the liquid-cooled FD611V work for the 345. Internal repair coverage extends to piston and ring inspection, crankshaft and bearing measurements, camshaft service, valve-seat reconditioning, and cylinder-bore refinishing.

Carburetor service: Exploded views accompany disassembly, cleaning, inspection, and assembly instructions. For the FH601V, the manual restricts sealed idle-mixture adjustment to EPA/C.A.R.B.-certified technicians and repair facilities.

The FH531V and FD611V carburetor sections warn that striking the float pin can damage its holder. Starter repair has a defined limit: brushes, end caps, and drive components; damaged housings or armatures require starter replacement.

345 cooling: Cylinder leak-down testing complements the cooling-system checks. Radiator, cooling-fan, thermostat, and water-pump procedures address the components specific to this liquid-cooled model.

Wiring Diagrams and Circuit Diagnosis

Separate Main Electrical Schematics for the 325/335 and 345 show their different electrical layouts. Cranking Circuit Schematics and RIO Circuit Schematics connect the system descriptions to tests for starting, PTO operation, and reverse-implement interlocks.

Diagnostic charts identify test locations, expected readings, and follow-up checks when results are abnormal. This links a no-crank or PTO complaint to specific connectors, switches, and circuit-board connections before components are selected for replacement.

The electrical section also covers charging-system output, ignition components, warning-light circuits, and fuel-shutoff solenoid tests. Electric PTO clutch service includes air-gap adjustment and removal and installation.

K70A Transaxle, Steering, and Hydraulic Lift

The hydrostatic power train section follows the K70A through teardown and reassembly, including the differential, pump and motor cylinder blocks, valve plates, and brake assembly. Wear limits and component views support internal inspection, while symptom charts address loss of drive, erratic speed, and movement in neutral.

Brake service: External linkage checks are separate from internal brake repair, which requires transaxle disassembly.

Steering differences: The 325 gearbox procedures include bearing-preload and mesh-load adjustment. The 335/345 section instead covers the hydraulic steering valve and column, with leakage tests that distinguish steering-valve faults from cylinder leakage.

The Hydraulic Schematic shows how the charge pump, lift valve, and steering circuit relate. Lift-system diagnosis covers slow lifting and attachment drop, followed by control-valve disassembly and lift-cylinder replacement procedures.

Mower Decks and Spindle Assemblies

Attachment coverage includes the 38-inch deck, 44-inch rear-discharge deck, 48-inch convertible deck, and 54-inch deck. Overall views and spindle cross sections clarify assembly differences, including the 44-inch deck’s mulching and rear-discharge blade arrangements.

The spindle procedures warn that clamping the shaft’s hexagon end in a vise can damage it and affect blade operation. Deck-leveling instructions identify the TY15272 Blade Height Gauge.

A Preview of Engine Settings and Fluid Capacities

For the FH531V, the valve-adjustment specifications list cold intake and exhaust clearance at 0.15 mm (0.006 in.). Its repair specifications give a flywheel nut torque of 172 N·m (127 lb-ft), alongside component-specific torque tables and inspection limits.

The fluid-capacity tables list 3.1 L (3.3 qt) for the 345 cooling system and 4.3 L (4.7 qts) for the K70A transaxle.

For work around mower blades, the PTO, and pressurized hydraulics, follow the manual’s safety precautions. Always rely on the full original documentation before starting mechanical or diagnostic work.

Searchable PDF with Electrical Foldouts

Search, bookmarks, and diagram detail: Searchable text supports navigation across the manual. Embedded bookmarks cover the main systems, although some engine entries are misplaced and one cross-section bookmark has no valid destination. Small wire codes and connector labels on the wide electrical diagrams require zooming for comfortable reading.

One printable English PDF contains 568 pages, including the original cover and tractor illustration (two pages), 13 blank or notes pages, and 24 repeated electrical foldout pages.