5-19CYLINDER HEAD ENGNOTE:NOTE:INSPECTION1. Eliminate: Carbon deposits(from the combustion chambers)Use the rounded scraper.Do not use a sharp instrument to avoid damag-ing or scratching: Spark plug threads Valve seats2. Inspect: Cylinder headDamage/scratches Replace. Cylinder head water jacketMineral deposits/rust Eliminate.3. Measure: Cylinder head warpageOut of specification Resurface the cylin-der head.Warpage limit:0.1 mm (0.004 in)Measurement steps: Place a straightedge 1 and a thicknessgauge 2 across the cylinder head. Measure the warpage. If the limited is exceeded, resurface the cylin-der head as follows. Place a 400 600 grit wet sandpaper on thesurface plate and resurface the cylinderhead using a figure-eight sanding pattern.To ensure an even surface, rotate the cylinderhead several times.
