Hyundai DHY12000SEV2 User Manual page 20

7.3. Replacing oil filter.
7.3.1. Loosen the Oil Filler Cap.
7.3.2. Remove the Oil Drain Plug and drain the old oil while the engine is still warm.
7.3.3. After draining, re-tighten the drain plug.
7.3.4. Remove old filter and replace with new. Fit new copper washer as required.
7.3.5. Refill with the recommended oil API CH-4/CF/SJ/SL diesel engine oil or higher
grade.
7.4. Servicing the Air Filter.
7.4.1. Open access door to right of control panel.
7.4.2. Air filter is mounted low and to the left
7.4.3. Undo the two clips and remove the air filter cover and
take out the air filter.
7.4.4. Clean the air filter.
7.4.5. Reverse this process to re-install filter.
7.5. Clean and Replace Fuel Filter.
7.5.1. Drain out the fuel from the fuel tank.
7.5.2. Replace filter.
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 Do not wash air filter – blow out any dust from housing
using a low pressure air-line.
 Replace the air filter if the engine output decreases or
excessive exhaust smoke is noticed.
 Never run the generator without the air filter, otherwise
rapid engine wear will result.
• Never run the generator without the fuel filter.