Ryobi 766r manual Specifications, Engine, Drive Shaft & String Head

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SPECIFICATIONS

ENGINE

Engine Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 2-Cycle Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.25 in. (31.75 mm.) Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.9 cu in. (31 cc.) Operating RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6,600 - 8,000 rpm Idle Speed RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,400 - 4,400 rpm Ignition Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Slide Switch Spark Plug Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.020 in. (0.5 mm.) Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuel/Oil Mixture Fuel/Oil Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32:1 Carburetor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diaphragm, All-Position Starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Auto Rewind Muffler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Baffled with Guard Throttle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manual Spring Return Fuel Tank Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 oz. (530 ml.) Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HD Polyethylene

DRIVE SHAFT & STRING HEAD

Drive Shaft Housing

. . . . . . . . . . . . Steel Tube

Throttle Control

. . . . . . . Finger-Tip Trigger

Unit Weight (No fuel, with string cutting head, string guard and loop handle)

. . . . . 12.25 lbs. (5.6 kg.)

Cutting Mechanism

. . . . . . . . . . . Bump Head

Shoulder Strap

. . . . . . . . . . . . . . Optional

Line Spool Diameter

. . . . . . . . 3 in. (76.2 mm.)

Trimming Line Diameter

. . . . 0.080 in. (2.03 mm.)

Cutting Path Diameter

. . . . . . . 16 in. (40.6 cm.)

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Contents OPERATOR’S Manual Introduction Table of ContentsSpark Arrestor California Emission RegulationsBefore Operating Safety Warnings for GAS TrimmersSymbol Meaning Rules for Safe OperationWhile Operating Other Safety Warnings Full Choke position Partial Choke position HOT Surface WarningSharp Blade Do not USE Blades Indicates OIL Choke ControlKnow Your Unit Application Grip Wing Nut Bolt Washer Assembly InstructionsInstalling and Adjusting the D-HANDLE Screws Installing the Cutting Attachment ShieldShield Shield Mount Cutting AttachmentOIL and Fuel Mixing Instructions Using Blended FuelsUsing Fuel Additives OIL and Fuel InformationStopping Instructions STARTING/STOPPING InstructionsStarting Instructions Operating Instructions Holding the Trimmer Adjusting Trimming Line LengthTips for Best Trimming Results Maintenance and Repair InstructionsMaintenance Schedule Frequency Maintenance Required Refer toBump Knob Line InstallationWinding the Existing Inner Reel Outer Spool Inner Reel Shaft SpringHolding Slots Choke Lever Partial Choke Position B Screws Installing a Prewound ReelAIR Filter Maintenance Removing the Air Filter/Muffler CoverAir Filter Cleaning the Air FilterReinstalling the Air Filter/Muffler Cover Check Fuel Mixture Carburetor AdjustmentClean Air Filter Adjust Idle Speed Screw020 ACCESSORIES/REPLACEMENT PartsReplacing the Spark Plug 110-120 in.lb .3-13.5 NmLong Term Storage Cleaning and StorageCleaning StorageProblem Cause Action TroubleshootingDrive Shaft & String Head SpecificationsEngine Page Owners Warranty Responsibilities Save These Instructions for Future Reference Limited TWO-YEAR WarrantyRyobi Outdoor Products Ryobi Canada INC