Download Manual - Scag Power Equipment

Section 44.4 DIESEL ENGINE BREAK-INThe proper break-in of a new diesel engine can make adifference in the performance and life of the engine. Performthe following break-in procedure during the first 50 hoursof operation:1. A new engine should be operated with as near full loadas possible. However, the engine must be allowed toreach an operating temperature before operating at fullload conditions.2. The engine oil should be checked twice daily. Higherthan normal oil consumption is not uncommon duringthe initial break-in period.3. Change the oil and filter element after the first 40hours of operation.4. Check all engine belts for proper tension after the first10 hours of operation and adjust, if necessary. Referto Adjustments in Section 6.5. During the break-in period, check and tighten allengine hardware.4. Turn the ignition key switch to the PREHEAT positionuntil the indicator light for the glow plug glows brightred. The colder the temperature, the longer it will taketo energize the glow plug. This step is not necessarywhen starting a warm engine.5. Turn the ignition key switch to START position andrelease the key as soon as the engine starts. Do nothold the key in the START position for more than 15seconds at a time. Allow at least 60 seconds betweeneach cranking attempt to inhibit overheating the startermotor. Prolonged cranking can damage the startermotor and shorten battery life.6. Allow engine to warm to operating temperature.4.6 OPERATOR COMFORT ADJUSTMENTSTwo adjustments can be made to make your mowing jobcomfortable. The steering handle can be adjusted up ordown and the seat can be adjusted forward or back.A. Adjusting Steering Handle Height1. Remove the hardware securing the handle to thesteering shaft. Two sets of holes are available toadjust the handle height.4.5 STARTING THE DIESEL ENGINECAUTION:DO NOT USE STARTING FLUIDS. Use of startingfluids in the air intake system may be potentiallyexplosive or cause “Runaway” engine conditionthat could result in engine damage and/orpersonal injury.1. Be sure the fuel shut-off valve is completely open.The valve is located in the fuel line between the fueltank and electric fuel pump (See Section 7).2. Sit in the operator’s seat and depress the interlock footpedal with your left foot. Make sure the parking brakeand mower blade brake are engaged.HardwareSecond Bolt HoleFigure 4-4 Steering Handle Adjustment2. Move the handle to align with the other holes in thesteering shaft. Install the hardware and tighten.3. Set throttle lever to 3/4 throttle.11