Echo GT-231 Operator's Manual

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G RASS TRIMMEROPERATOR 'S MANUAL 191. Check idle speed and reset if necessary. If a tachometer is avail-able, idle speed screw (A) should be set to the specifications foundon page 23 "Specifications" of this manual. Turn idle screw (A)clockwise to increase idle speed; counter clockwise to decrease idlespeed.WARNING DANGERWhen carburetor adjustment is completed, the cutting attachmentshould not turn at idle, otherwise serious personal injury mayresult.LUBRICATIONLevel 1.Tools Required: 8 mm Open-end wrench, screwdriver, clean ragParts Required: ECHO® LUBETM 8 oz. (P/N 91014) or Lithium BaseGrease1. Remove plastic shield.2. Loosen bearing housing locating screw (A), at the top of thehousing, remove mounting screw (B).3. Pull the flexible drive shaft (C) from the housing, wipe clean and re-coat with a thin coating 1/2 oz. (15 ml) of grease.4. Slide the flexible drive shaft back in the drive housing being carefulnot to get dirt on the flexible drive shaft.5. Install the bearing housing and shield.ANYLON LINE REPLACEMENTLevel 1.Tools Required: Head locking tool - 1/8 in. dia. Rod (if head is to beremoved)Parts Required: ECHO 2mm (0.080) Nylon Trimmer Line 6 m (20 feet)ABC