SK1050 Operator’s Manual Controls - 23 Gauges and Indicators Item Description Notes 2. Graphic display c00ic098w.eps See “Graphic Display” on page 24. 3. Hydraulic fluid sight glass c00ic099w.eps Shows level of hydraulic fluid in tank. Maintain fluid at halfway point on glass. 4. Fuel gauge c00ic100w.eps Shows level of fuel in tank. NOTICE: Use low sulfur or ultra low sulfur fuel only.