Honda ATC350X ATV Service & Owner's Manual Set, 1985–1986 (P/N 61HA501)

Use the owner's booklet for operation and routine care, and the service manual for component inspection, diagnosis, and repair.

The owner's PDF omits printed pages 66–67. Its final PDF page combines printed page 65, containing the wiring diagram, with warranty-service text from printed page 68.

PDF Search, Bookmarks, and Page Layout

Search and diagram detail: Neither PDF supports embedded text search. The service manual has chapter bookmarks; the owner's manual has none. Small wire codes in the owner's wiring diagram require zooming; the service-manual diagram is clearly readable.

The ZIP contains two printable English PDFs totaling 300 pages. This total already includes seven cover/preliminary pages across the two files and seven memo pages in the service manual.

Engine, Chassis, and Electrical Service

These selected contents outline the main workshop coverage rather than reproduce the full contents list. Further topics include oil-cooler removal and decompressor-cable adjustment.

• Engine repair: Step-by-step engine removal and installation, cylinder-head and valve work, valve-guide replacement, seat refacing, cam-chain-tensioner service, and cylinder/piston inspection.

• Drivetrain service: Clutch and primary-drive work, oil-pump and oil-screen service, kick-starter and gearshift repair, alternator removal, and internal transmission and crankshaft procedures.

• Fuel and scheduled maintenance: Fuel-tank and air-cleaner-case removal, carburetor disassembly, float and throttle-valve inspection, choke service, pilot-screw and high-altitude setup, compression and ignition checks, and maintenance schedules.

• Chassis and suspension: Front-wheel and tire service, fork disassembly and reassembly, steering-stem and bearing work, rear axle and wheel bearings, swingarm pivot bearings, and rear-shock fluid bleeding and assembly.

• Hydraulic brakes: Fluid replacement and bleeding, pad and disc replacement, front and rear caliper overhaul, master-cylinder service, and parking-brake mechanism repair.

• Electrical diagnosis: CDI ignition tests, alternator and pulse-generator checks, AC-regulator testing, lighting service, switch-continuity charts, and a wiring diagram with wire-color codes.

• Troubleshooting and service data: Fault charts for starting, power loss, low- and high-speed performance, shifting, handling, suspension, brakes, and electrical faults, with torque tables, capacities, clearances, and wear limits.

The service manual is suited to technicians and experienced owners who already understand standard workshop procedures and have the required measuring equipment and special tools; it does not teach those fundamentals.

Repair Depth and Workshop Tools

Engine-in-frame work: Honda identifies the camshaft, rocker arms, clutch, oil pump, kick starter, alternator, gearshift linkage, and carburetor as serviceable with the engine installed. Cylinder-head removal requires engine removal, while transmission and crankshaft repair require crankcase separation.

Tool references include clutch-center holder 07923-KE10000, rotor puller 07733-0020001 or 07933-3950000, and 56 mm locknut wrench 07916-HA20000/07916-HA2010A.

Steering-stem socket 07916-3710100 is also specified. The tool tables identify drivers, pilots, bearing removers, a valve-spring compressor, and alternatives listed as commercially available in the United States.

1985 and 1986 Configuration Differences

Procedures and illustrations distinguish "'85" from "After '85" configurations. The differences include cable, hose, and harness routing; maintenance schedules; engine-mount hardware; cam-chain-tensioner details; steering-head bearings; front-brake-disc fasteners; and rear axle and caliper arrangements.

Carburetor and brake identification: The fuel section identifies QA05A for 1985 and QA10A for the later configuration, with separate high-altitude pilot-screw adjustments. Rear brake-pad specifications and drive-chain adjustment procedures also differ. Those callouts help prevent mixing 1985 parts or settings with the 1986 build.

Carburetor settings and shock-pressure figures differ between the owner's booklet and service manual, so the publications should not be treated as interchangeable specification sheets.

Illustrations and Electrical Tests

Cable & Harness Routing plates and the Lubrication Points map support routing and lubrication work. Assembly drawings cover the cylinder head and cam-chain tensioner, clutch/oil pump/kick starter, rear shock and swingarm, and brake calipers and master cylinders.

Wiring Diagram 0030Z-HA5-0100 includes switch-continuity charts. The electrical section adds component locations and resistance or voltage checks for the ignition coil, exciter coil, pulse generator, lighting coil, and regulator. CDI testing specifies suitable meters because an unsuitable tester can produce false readings.

Owner Care and Riding Information

The owner's booklet covers pre-ride inspection, starting and riding techniques, oil and filter care, air-cleaner and spark-plug service, clutch and brake checks, drive-chain and slider maintenance, and suspension adjustment.

It also includes spark-arrester cleaning, storage, transporting, noise-emissions information, specifications, and its own wiring diagram. Honda identifies the ATC350X as an off-road, operator-only machine for experienced riders.

Repair Cautions

Torch-heating the cylinder head during valve-guide replacement can warp it. Overtightening a fork slider in a vise can damage the slider.

Rear-shock work requires Honda-specified mounting bolts installed in the correct direction and a proper nitrogen-charging system. Opened hydraulic brake circuits must be bled and checked before operation.

Selected Oil-Pump Clearances and Ignition Test Data

Oil-pump inspection data distinguishes a standard end clearance of 0.02–0.08 mm from the 0.10 mm service limit.

In the ignition section, pulse-generator coil resistance is specified at 297–363 Ω across the coupler terminals.