2012–2013 Yamaha Grizzly 350 4WD ATV Service & Owner's Manuals (P/N LIT-11616-25-40)

Yamaha’s 2012 Grizzly 350 Service Manual covers YFM35FGB/YFM35FGHB, model IDs 1NS1/1NS5, under P/N LIT-11616-25-40 and manual code 1NS-F8197-10 (first edition, August 2011). The accompanying Owner’s Manual covers YFM35FGD/YFM350FAD under publication 1NS-F8199-61-E0 (first edition, May 2012), with Europe and Oceania material.

The 485-page PDF set contains two files: a 343-page Service Manual and a 142-page Owner’s Manual.

• Engine repair: Compression testing, engine removal and installation, cylinder-head and valve service, piston and cylinder inspection, and crankcase/crankshaft repair procedures.

• CVT and transmission: Primary and secondary sheaves, centrifugal clutch service, transmission disassembly and inspection, and middle gear alignment and adjustment.

• Brakes and chassis: Wheel hubs, front brake calipers and master cylinder, rear drum brake, steering components, ball joints, suspension arms, shock absorbers, and swingarm service.

• 4WD and shaft drive: Front constant-velocity shafts, On-Command 2WD/4WD components, differential and final-drive service, rear axle and drive shaft, backlash measurement, and shim selection.

• Fuel and scheduled service: Carburetor teardown and fuel-level adjustment, valve clearance, V-belt replacement, hydraulic brake bleeding, toe-in, drive-select linkage adjustment, lubrication, and maintenance schedules.

• Electrical and operating guidance: Circuit diagrams, component tests, troubleshooting charts, complete wiring diagrams, pre-operation checks, starting and reverse operation, terrain-riding guidance, and regional safety and loading labels.

Yamaha wrote the Service Manual primarily for dealers and qualified mechanics with a working knowledge of mechanics and repair techniques; the Owner’s Manual supports operation and basic maintenance, with tools and experience required for maintenance and minor repairs.

Model Identification and Regional Differences

The Owner’s Manual’s EC declaration identifies YFM350FWA (YFM35FG) and VIN 5Y4AH13W0C0515667–. Model codes distinguish the publications’ coverage and help match repair information to the frame identification before parts selection.

Regional placards, indicator labeling, tire references, curb-weight data, and fuel recommendations are documented separately. These distinctions help owners identify the applicable information for imported ATVs with different controls or labels.

Engine, CVT, and Carburetor Repair

Exploded views and job charts introduce removal and disassembly work, supported by inspection criteria, assembly notes, torque and lubrication references, and replacement symbols.

Internal engine coverage reaches valve guides and seats, piston rings, starter clutch, balancer gears, oil pump, crankcase, and crankshaft. CVT sections address sheave inspection and assembly; transmission and middle gear sections add internal inspection and gear setup.

Carburetor coverage extends through disassembly, passage and component inspection, reassembly, installation, and fuel-level setup.

Steering, Suspension, and Shaft Drive

Steering procedures address the handlebar, steering stem, tie-rods, steering knuckles, and ball joints. Suspension work covers front arms, shock absorber inspection, and swingarm service.

The drive-train chapters detail CV-joint disassembly and inspection, differential-motor checks, differential backlash adjustment, and operational checks. Rear final-drive coverage includes teardown, bearing service, pinion and ring-gear shim selection, ring-gear-stopper clearance, rear axle inspection, and installation.

Differential case service is covered, but Yamaha specifies that the factory-assembled differential gear unit and its actuator motor must not be disassembled.

The manual identifies left-hand threads on several middle-gear and final-drive retainers, where incorrect loosening can damage threads. It also warns that insufficient backlash damages gear teeth, making its shim-selection and backlash procedures relevant after gearcase repair.

Electrical Diagrams and Factory Reference Data

Electrical troubleshooting addresses ignition, starting, charging, lighting, signaling, oil-cooler fan control, and four-wheel-drive selection, with circuit-specific tests.

Reference illustrations include the Engine Oil Lubrication Chart and Cable Routing drawings. Electrical references include the Ignition System Circuit Diagram, Starting Circuit System Operation, 2WD/4WD Selecting System Circuit Diagram, and YFM35FGB/YFM35FGHB 2012 Wiring Diagram.

General, engine, chassis, and electrical specifications accompany engine and chassis torque tables, lubrication points and lubricant types, fluid capacities, wear and clearance limits, and electrical test data.

Special Tools for Internal Repair

The tool section lists Yamaha 90890-series references alongside North American YM/YU numbers. It identifies valve spring compressor 90890-04019/YM-04019, sheave spring compressor 90890-04134/YM-04134, crankcase separator 90890-01135/YU-01135-B, and gear-lash measurement tool 90890-01475/YM-01475.

Owner Operation, Safety, and Maintenance

Operating guidance covers cold and warm starting, drive-select and reverse operation, On-Command four-wheel drive, parking, break-in, cargo carriers, storage-compartment limits, and trailer loading. Riding sections address hills, crossing slopes, shallow water, rough terrain, sliding, skidding, and responses to a stalled or tipping ATV.

Owner maintenance includes pre-operation fluid, brake, tire, fastener, light, and switch checks. Periodic charts accompany engine, final-drive, and differential oil service, air-filter and spark-arrester cleaning, brake adjustment, battery and fuse service, lighting work, and basic troubleshooting.

Safety instructions accompany brake, steering, engine, and shaft-drive repair, including bleeding, timing, backlash, and final inspection requirements.

PDF Search, Bookmarks, and Included Pages

Both PDFs have searchable text and chapter bookmarks; small service-manual circuit labels are best read enlarged. The service file includes two cover pages, eleven blank or header-only divider pages, and one appended color wiring diagram; the owner file includes two cover pages, one EC declaration page, and two index pages. All are already included in the individual page counts and the 485-page total.