Product Manual A
31609 A MTP4000-6000DZV/DZD Operating Manual 49
Section 4 - Maintenance
Normal maintenance service and replacement of parts are the responsibility of the owner/operator and, as such, are
not considered defects in materials or workmanship within the terms of the warranty.
Poorly maintained equipment can become a safety hazard. In order for the equipment to operate safely and properly
over a long period of time, periodic maintenance and occasional repairs are necessary. NEVER perform even routine
service (oil/filter changes, cleaning, etc.) unless the key switch is turned to OFF and the negative (-) cable on the
battery is disconnected. Attach a “DO NOT START” sign to the control panel. This will notify everyone that the unit
is being serviced and will reduce the chance of someone inadvertently trying to start the unit. Make sure engine and
pump components are adequately cooled before attempting any service or maintenance work.
For detailed engine maintenance procedures, refer to the engine operator’s manual, which was supplied with the
unit when it was shipped from the factory.
WARNING
Before attempting to service the unit, read this manual carefully. Also review all tags
and labels/decals provided on the equipment. Operating and maintenance personnel
should have a good understanding of all aspects of this unit and the pumping
conditions. Failure of operating personnel to be familiar with all aspects of pump
operation outlined in this manual could contribute to equipment damage, bodily injury
or possible death.
Before servicing:
1. Verify that the key switch is turned to OFF and the negative (-) cable on the battery is disconnected.
2. If the pump or components are hot, allow adequate cooling prior to servicing the unit.
3. Close the suction and discharge valves.
4. Vent the pump slowly and drain completely.
CAUTION
Do not allow compressed air to pressurize the pump or vent-off compressed air through the
pump, as this may damage the pump and cause serious personal injury.
WARNING
If this unit is used to handle any hazardous materials that can cause injury or illness,
take precautions by wearing approved protective clothing and use appropriate safety
equipment.
When servicing the unit, use only components provided by the OEM or Generac Mobile Products, LLC. Any use of
non-authorized parts could result in sub-standard performance, damage to equipment and possible injury to
personnel. Use of unauthorized parts will also void the warranty.
Refer to the troubleshooting section on page 71 to help diagnose operational or performance problems. Only
disassemble the unit components required to remedy the problem condition. Select a clean suitable location for any
required maintenance, and note that all work must be performed by qualified personnel.
DAILY WALK AROUND INSPECTION
Look for conditions that could hinder performance or safety, such as (but not limited to) oil/coolant/fuel leakage,
blocked vents, loose/missing hardware and electrical connections.
Visually inspect the engine fan belt for cracks, fraying, stretching and that the belt is properly seated in pulley grooves.
Replace the belt according to the manufacturer’s recommendations.










