Yamaha Grizzly 550 YFM550DE, YFM550DHE, YFM550PE, and YFM550PHE ATV Owner's Manual 2013 (P/N LIT-11626-27–22)

• Covers 2013 Yamaha Grizzly 550 models YFM550DE, YFM550DHE, YFM550PE, and YFM550PHE across EPS and non-EPS configurations. EPS-specific warning-light and 40 A fuse information is included for YFM550PE and YFM550PHE.
• Official Yamaha Owner’s Manual, 1st edition, March 2013, P/N LIT-11626-27-22, Yamaha cover code 2LB-F8199-10, supplied as a 176-page PDF.

Operational Guidelines & Maintenance

Getting the baseline right on a utility ATV starts with the factory numbers. This publication covers the controls, pre-operation checks, riding techniques, scheduled maintenance, adjustments, minor repair work, troubleshooting, cleaning, storage, and specifications for these models.

It walks through the L/H/N/R/P drive select, On-Command 2WD/4WD and 4WD/DIFF.LOCK switches, override function, multi-function display, self-diagnosis error-code screen, throttle limiter, and five-position front and rear spring-preload settings. Operating limits include a normal differential-lock speed restriction of 35 km/h (22 mph) and a maximum depth of 35 cm (14 in) for slow-moving shallow-water crossings.

Factory maintenance charts are organized by time, mileage, or operating hours—whichever comes first. They begin at 1 month/320 km (200 mi)/20 hours and 3 months/1,300 km (800 mi)/80 hours, then continue in 6-month/2,500 km (1,600 mi)/160-hour increments. Scheduled items include the fuel line, spark plug, valve clearance, air filter, brakes, V-belt, wheel bearings, axle boots, steering and suspension points, engine and gear oils, cooling system, control cables, lights, and chassis fasteners. The air filter interval is every 20–40 hours under normal use; coolant and brake fluid are on a 2-year cycle, and brake hoses on a 4-year cycle.

Factory Procedures and Illustrated System Views

The manual identifies and illustrates these owner-level procedures:

• Panel A–H, carrier, footboard, and radiator-grille removal; spark-plug inspection; engine oil and filter replacement; final-gear and differential-oil service; and cooling-system draining, refilling, and air bleeding.
• Air-filter and spark-arrester cleaning, V-belt-case draining, throttle and brake-pedal free-play adjustment, brake-pad and fluid checks, chassis lubrication, battery service, fuse and bulb replacement, headlight adjustment, and wheel removal/installation.
• Troubleshooting charts for starting or poor-running complaints—fuel, battery, ignition, and compression—and engine overheating, followed by cleaning and short- or long-term storage preparation.

Representative illustrations include the On-Command switch and indicator states, multi-function self-diagnosis display, panel A–H location map, water-pump and cylinder-head coolant bleed points, brake-pad wear-indicator grooves, and fuse-box layout. Tool references cover the supplied low-pressure tire gauge and spark-plug wrench, plus an oil-filter wrench and the special wrench used for shock-preload adjustment.

Exact Specs & Fluid Requirements

The specifications identify a 558 cc liquid-cooled, four-stroke SOHC single-cylinder engine with a 92.0 × 84.0 mm bore and stroke, 9.30:1 compression ratio, fuel injection, wet centrifugal automatic clutch, V-belt primary drive, and shaft-drive secondary reduction.

Recommended engine-oil viscosities are SAE 5W-30, 10W-30, 10W-40, 15W-40, 20W-40, or 20W-50 according to ambient temperature, with API SG or higher and JASO MA performance. Capacity is 2.00 L (2.11 US qt) without filter replacement or 2.10 L (2.22 US qt) with a new filter. Final-gear and differential capacities are 0.20 L and 0.22 L, using SAE 80 API GL-4 hypoid gear oil. Cooling-system data gives 1.99 L radiator capacity, a 0.24 L reservoir, and a 1:1 ethylene-glycol/distilled-water mixture. Brake fluid is DOT 4; fuel capacity is 20.0 L with a 4.5 L reserve.

Representative torque values include 34 Nm (25 ft-lb) for the front carrier mounts, 60 Nm (43 ft-lb) for the rear carrier mounts, 7 Nm (5.1 ft-lb) for under-fender carrier hardware, 55 Nm (40 ft-lb) for wheel nuts, 30 Nm (22 ft-lb) for the engine-oil drain bolt, and 17 Nm (12 ft-lb) for the oil filter. Recommended cold tire pressure is 35.0 kPa (5.0 psi) front and 30.0 kPa (4.4 psi) rear. Load data covers the 220 kg (485 lb) total ATV limit, 45 kg (99 lb) front carrier, 85 kg (187 lb) rear carrier, 600 kg (1,322 lb) pulling load, and 15 kg (33 lb) tongue weight. The auxiliary DC jack is rated 12 V, 10 A, 120 W.

Repair Scope and Manual-Specific Cautions

This is an owner’s manual, not the factory service manual. Its repair scope is preventive maintenance, adjustments, troubleshooting, and minor repair operations; it does not contain internal engine, clutch/V-belt transmission, final-gear, differential, fuel-injection, EPS, or brake-hydraulic overhaul procedures, and it does not provide wiring diagrams. Yamaha directs valve-clearance adjustment, brake-component repair, drive-select safety-cable adjustment, and wheel-hub-bearing repair to dealer service. The nitrogen-charged shock absorbers are not to be opened or heated.

Oil selection is a machine-specific repair trap because the engine oil also lubricates the wet clutch: CD-rated diesel oils and oils marked “ENERGY CONSERVING II” or higher can cause clutch slippage. During air-filter service, twisting the foam element or failing to seat it correctly can damage the element or admit unfiltered air, leading to rapid engine wear. The brake system requires DOT 4 only; the wrong fluid can deteriorate rubber seals, while mixing fluid types can cause a harmful chemical reaction.