Product Manual A

Maintenance
28 MLT6SM/K-8SK Operating Manual 17973 G
overflow jug.
• Check the oil level daily. Refer to the engine operator’s manual for the proper viscosity grade of oil, including
special operating conditions such as a change in season or climate.
○ DO NOT start the unit if the engine oil level is below the add mark on the dipstick.
○ Normal operating level is in the cross-hatch pattern between the full and add markings on the dipstick.
○ Add oil only if the oil level is below the add mark on the bottom of the cross-hatch pattern on the dipstick.
DO NOT OVERFILL the crankcase.
• Check the fuel level.
Note: If the engine was run out of fuel or the fuel tank was drained, it may be necessary to bleed the fuel lines. Refer
to the engine operator’s manual supplied with the unit.
BASIC MAINTENANCE SCHEDULE - MITSUBISHI ENGINE
Refer to the original equipment manufacturer’s operating manual for a complete list of
maintenance requirements. Failure to comply with the procedures as described in the engine
operator’s manual will nullify the warranty, decrease performance and cause equipment
damage or premature equipment failure. Maintenance records may be required to complete
a warranty request.
Use the schedule in the following table as a guide for regular maintenance intervals. For additional or replacement
copies of the engine operator’s manual, contact an authorized dealer in your area.
* Perform after the initial 50 hours of operation ONLY, then on the regularly scheduled interval as indicated in the
table above.
† Generac Mobile Products recommends that oil change intervals on the MLT6SM equipped with the Mitsubishi
L3E-W461ML Tier 4 engine be extended to 750 hours after initial break-in. The engine comes from the factory with
a larger sump that holds 5.5 quarts (5.2 L) of engine oil. After the initial 50 hour break-in and oil change, the sump,
coupled with the larger oil filter (P/N 70124), allows the engine to operate up to 750 hours between routine oil changes.
Hot, humid or dusty conditions can shorten engine oil service life, regardless of suggested oil change intervals.
Always follow the recommendations of the OEM engine manual that was shipped with the unit for specific operating
instructions. If further technical assistance is required, contact Generac Mobile Products Technical Service at 1-800-
926-9768.
Item Daily
750
Hours
As
Required
Check Oil Level 
Check Coolant Level 
Check Fuel Level 
Check Tire Pressure 
Check All Electrical Connections 
Inspect Radiator Fins For Debris, Clean As Required 
Inspect Light Tower Winch For Proper Operation 
Replace Engine Oil And Oil Filter *†
Belt And Belt Tension - Inspect And Adjust *
Replace Fuel Filter 
Check Battery Condition 
Replace Air Cleaner Element 
Lubricate Leveling Jacks 
Fuel System - Bleed Air 
Drain Residual Water From Fuel Filter 