Target Audience:
Owners, DIY mechanics, service technicians working on Yamaha Grizzly 660 ATVs.
Value Proposition:
Provides comprehensive, factory-authorized information for efficient and accurate maintenance and repair, saving time and money compared to relying on generic or incomplete resources.
Comprehensiveness:
Complete coverage of all major systems and procedures, ensuring no critical information is missing for effective servicing.
Authenticity:
Official Factory Service Manual, ensuring accuracy and adherence to Yamaha's engineering standards.
Accessibility:
Instant digital download format, readily available without shipping delays or physical media requirements.
Engine:
Internal engine components (pistons, rings, rods, crankshaft, camshaft, valve train), lubrication system (oil pump, pan), cooling system (radiator, fan, oil cooler), fuel system (carburetor, fuel pump, fuel filter, intake), ignition system (spark plugs, wires, coil), exhaust system (muffler, downpipe, catalytic converter).
Drivetrain:
Transmission, transfer case, axles, drive shafts, clutch (pressure plate, shoes, case), shift linkage.
Chassis And Suspension:
Suspension system (shocks, struts), steering system, brakes (discs, pads, shoes, rotors, lines, hoses), wheels, tires, hubs, bearings.
Electrical System:
Wiring harness, engine harness, sensors (oil sensor, pressure sensor, oxygen sensor), ignition system, battery, starter, alternator, lighting (headlights, taillights, fog lights, interior lighting), switches, relays.
Bodywork And Trim:
Body panels, fenders, bumpers, hood, doors, trim pieces, dashboard, console, interior components, glass, windshield, seals.
Routine Maintenance:
Oil change, transmission fluid change, fluid checks and changes, filter replacement (air, fuel), spark plug replacement, tire rotation, brake inspection and replacement.
Diagnostic Troubleshooting:
Fault finding for engine, transmission, electrical, and other systems; diagnostic codes; symptom-based troubleshooting.
Repair And Rebuild:
Engine internal repair (cylinder head, piston, rings, crankshaft), transmission overhaul, brake caliper repair, suspension component replacement, electrical component diagnosis and replacement.
Component Replacement:
Replacement procedures for major components such as engine, transmission, radiators, fuel pumps, starters, alternators, brake components, and suspension parts.
Specifications And Tolerances:
Torque specifications for fasteners, clearances, tolerances for engine and drivetrain components, electrical system specifications.
Depth:
Comprehensive factory-level detail covering all aspects of maintenance, repair, overhaul, and diagnostics. Includes detailed exploded diagrams, schematics, and step-by-step instructions.
Engine Type:
4-stroke, SOHC, liquid-cooled, 5-valve
Bore X Stroke:
95.0 mm x 93.2 mm (typical for the generation)
Compression Ratio:
9.2:1 (typical for the generation)
Carburetor:
Mikuni BSR42, 42mm (typical)
Horsepower:
Approx. 45-50 HP (specific figure varies slightly by model year and tuning)
Torque:
Approx. 42-45 lb-ft (specific figure varies slightly by model year and tuning)
Fuel Type:
Unleaded gasoline, 87 octane or higher
Fuel Tank Capacity:
4.2 US gal (16 L) (typical)
Oil Type:
Yamalube 4 (or equivalent) SAE 10W-40, API SE, SF, SG, SH, SJ, SL (refer to manual for exact specifications)
Oil Capacity:
1.70 US qt (1.6 L) without filter change, 1.80 US qt (1.7 L) with filter change (refer to manual for exact specifications)
Length:
81.3 in (2065 mm) (typical)
Width:
45.1 in (1145 mm) (typical)
Height:
43.7 in (1110 mm) (typical)
Wheelbase:
50.4 in (1280 mm) (typical)
Dry Weight:
600 lbs (272 kg) (typical)
Ground Clearance:
10.8 in (274 mm) (typical)
Front Rack Capacity:
99 lbs (45 kg) (typical)
Rear Rack Capacity:
188 lbs (85 kg) (typical)
Towing Capacity:
1322 lbs (600 kg) (typical)
Trailer Tongue Weight:
132 lbs (60 kg) (typical)
Engine Oil Change:
Every 100 hours or 6 months (whichever comes first) (refer to manual for precise intervals based on usage).
Air Filter Cleaning:
Every 20 hours or monthly, depending on operating conditions; replacement as needed.
Spark Plug Replacement:
Every 100 hours or 12 months (refer to manual for specific plug type and gap).
Cvt Belt Inspection:
Every 20 hours or monthly; replace if signs of excessive wear are present.
Brake Fluid Change:
Every 24 months or as needed (refer to manual for fluid type and bleeding procedure).
Coolant Type:
Permanent type antifreeze coolant (50/50 mixture with distilled water) (refer to manual for specific Yamaha coolant recommendation).
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid (refer to manual for exact specification).
Cvtc Issues:
Some models may experience wear on the CVT belt or clutch components over time, requiring inspection and potential replacement.
Carburetor Issues:
Carburetor adjustments or cleaning may be necessary due to fuel variability or age, particularly if the ATV has been sitting for extended periods.
Electrical Connectors:
Corrosion or loose connections in electrical connectors, especially in wet environments, can lead to intermittent electrical issues.
