Maintenance schedule
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil | SAE 10W-30 | 1.6 L | — | 50 hr |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
The Yanmar LW Series is a 0.43 L engine rated at 3600 rpm. It powers generator sets from Generac, including the XD5000E. It holds 1.6 L (0.4 gal) of oil.
Also known as: Yanmar LW Series
| Oil capacity | 1.6 L |
|---|---|
| Displacement | 0.435 L |
| Rated speed | 3600 rpm |
Compiled from service & troubleshooting documentation across every generator set that uses the Yanmar LW Series.
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil | SAE 10W-30 | 1.6 L | — | 50 hr |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Engine oil level | Check | 8 hr | at each use / every 8 hours of operation | |
| Hour meter oil change alert | Other | 100 hr | CHG OIL display illuminates every 100 hours (hour meter alert) | |
| Air cleaner filter | Clean | 200 hr | Every 200 hours or every season; more often under dirty/dusty conditions | |
| Air cleaner filter | Inspect | 200 hr | every 200 hours or every season; clean more often in dirty/dusty conditions | |
| Engine oil and oil filter | Change | 200 hr | First service — change after first 50 hours, then every season; every month under heavy load or high temperature | |
| Engine speed control | Check | 200 hr | every 200 hours or every season | |
| Fuel tank / outlet fuel filter | Drain | 200 hr | drain fuel tank and replace outlet fuel filter every 200 hours or every season | |
| Fuel tank and outlet fuel filter | Drain | 200 hr | Every 200 hours or every season; drain fuel tank & replace outlet fuel filter | |
| Hour meter service alert | Other | 200 hr | SVC display illuminates every 200 hours (hour meter alert - service air filter) | |
| Oil and oil filter | Change | 200 hr | Every 200 hours or every season; change after first 50 hours then every season; more often under heavy load/high temp | |
| Valve clearance | Adjust | 400 hr | First service — check and adjust if necessary after first 50 hours, then every 400 hours thereafter | |
| Valve clearance | Check | 400 hr | First service — Every 400 hours thereafter (also check every season) | |
| Compression | Check | 1000 hr | ||
| Engine compression | Check | 1000 hr | ||
| Fuel injection nozzle | Inspect | 1500 hr | inspect, clean and test | |
| Fuel hoses | Check | 2000 hr | check and replace | |
| Generator start/run during storage | Test | 1 mo | Start and run the generator for 30 minutes every 30 days during storage | |
| Stored fuel treatment test | Test | 3 mo | Test stored fuel every 90 days and provide additional treatment if required |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Engine oil | SAE 20W-40 | CI-4 or CJ-4 | 1.6 L (1.7 qt) | Recommended for general, all-temperature use; viscosity chart also lists SAE 15W-40, 20W, 30, 40, 10W-30, 10W by ambient temperature from -20°C to 40°C | |
| Engine oil | SAE 10W | -20°C to 0°C | 1.6 L (1.7 qt) | see viscosity chart | |
| Engine oil | SAE 10W-30 | -20°C to 20°C | 1.6 L (1.7 qt) | see viscosity chart | |
| Engine oil | SAE 15W-40 | -10°C to 40°C | 1.6 L (1.7 qt) | see viscosity chart | |
| Engine oil | SAE 20W | -10°C to 30°C | 1.6 L (1.7 qt) | see viscosity chart (appears twice on chart for different temperature bands) | |
| Engine oil | SAE 30 | 0°C to 40°C | 1.6 L (1.7 qt) | see viscosity chart | |
| Engine oil | SAE 40 | 10°C to 40°C | 1.6 L (1.7 qt) | see viscosity chart | |
| Engine oil | SAE 20W-40 (general, all-temperature); chart also lists SAE 15W-40, 20W, 30, 40 (mineral) and SAE 10W-30, 20W, 10W (synthetic) by ambient temperature | API service class CI-4 or CJ-4 | 20°C to 40°C | 1.6 L (1.7 qt) | Temperature scale on chart: -20°C/-4°F to 40°C/104°F |
| Fuel | Diesel | 45.4 L (12 U.S. gallons) | always treat diesel fuel for long-term storage with approved fuel additive and water abatement material; test stored fuel every 90 days | ||
| Fuel | No. 2D diesel (above freezing); blend of No.1D and No.2D below freezing | Sulfur content max 15 ppm; minimum Cetane index of 40 | 45.4 L (12 U.S. gallons) | Do not use home heating oil or bio-diesel | |
| Fuel | No. 2D diesel above freezing; blend of No. 1D and No. 2D diesel below freezing | Sulfur content 15 ppm maximum; minimum Cetane index of 40 | 45.4 L (12 U.S. gallons) | Do NOT use Home Heating Oil or Bio-Diesel Fuel |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
⚠ Allow engine to cool before draining oil; failure to do so could result in death or serious injury (risk of burns).
⚠ Verify proper type and quantity of engine oil prior to starting to avoid engine damage
⚠ Eye protection required to avoid spray from spark plug hole when cranking engine
⚠ Explosion and fire risk: store fuel in well-ventilated area away from ignition sources
⚠ Treat diesel fuel for long-term storage; test stored fuel every 90 days
⚠ Eye protection is required to avoid spray from spark plug hole when cranking engine.
⚠ Eye protection is required to avoid spray from spark plug hole when cranking engine.
⚠ Avoid prolonged operation at minimum or maximum engine speeds and loads for the first hour of operation
⚠ Disconnect electrical loads prior to starting or stopping unit.
⚠ Recoil Hazard: recoil could retract unexpectedly, causing death or serious injury.
⚠ Disconnect electrical loads prior to starting or stopping unit.
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
The Yanmar LW Series engine has an oil capacity of 1.6 liters.
The Yanmar LW Series has a displacement of 0.435 liters.
The Yanmar LW Series powers 1 generator set(s), including Generac XD5000E.
The Yanmar LW Series oil change interval is every 50 hours.
A commonly reported issue on generators using the Yanmar LW Series is: Engine will not start; or starts and runs rough.. Cause: 1. Incorrect start sequence. 2. Fuel valve is OFF. 3. Dirty air filter. 4. Out of fuel. 5. Stale or contaminated fuel. 6. Low oil level. 7. Excessive rich fuel mixture. 8. Dirty fuel filter. 9. Air in fuel system. 10. Engine is under electrical load. 11. Battery not installed. 12. Battery weak or dead.. Fix: 1. Review & follow starting procedure. 2. Turn fuel valve ON. 3. Clean or replace air filter. 4. Fill fuel tank. 5. Drain fuel tank and fill with fresh fuel. 6. Fill crankcase to correct level. 7. Contact Authorized Service Dealer. 8. Replace fuel filter. 9. Repeat priming procedure. If no start condition persists Contact Authorized Service Dealer. 10. Remove all equipment from receptacles. Make sure the main breaker switch is OFF. 11. Install battery. 12. Charge or replace battery..