MAINTENANCE 1. Stop engine if in use. G424 engine requires a certain amount of 2. Allow sufficient time (approximately 2 minutes) for the oil to drain back into the oil pan. maintenance. Suggested maintenance requirements 3. Remove dipstick. Wipe clean and reinstall. Push dipstick all the way into the dipstick tube. are contained in this section. The owner should, however, develop his own maintenance schedule using the requirements listed in this section and any 4. Remove dipstick and note the oil level. other necessary requirements resulting from optional 5. Oil level must be between the "MAX" and "MIN" marks. additions to the engine system. 6.
If the oil level is below the "MIN" mark, proceed to Steps 7 and 8, and reinstall dipstick into the dipstick tube. Test Fuel System for Leaks • Obtain a pump spray bottle. • Fill with an approved leak test solution or a mixture of water and dish soap. 7. Remove oil filler cap from the valve rocker arm cover. • Spray a generous amount of the solution on the entire fuel system including the fuel storage container and fuel lines. 8. Add required amount of oil to bring level up to, but not over, the "MAX" mark on dipstick. • Wait approximately 15-60 seconds then perform a visual inspection of entire fuel system. • Leaks will cause the soapy solution to bubble.
• Repair any leaks before continuing. • Crank the engine through several revolutions. This will energize the fuel lock and allow fuel to flow to the pressure regulator/vaporizer. Apply additional leak test solution to this portion of the fuel system and inspect as above. • Repair any fuel leaks before continuing. NOTE: When refill engine oil, refill same oil as that used before. Inspect Engine for Fluid Leaks • Start engine and bring up to operating temperature. • Turn engine off. • Inspect entire engine for oil and/or coolant leaks. • Repair any/all leaks before continuing. Change Engine Oil &Filter • Start engine. • Bring up to operating temperature. • Shut down engine.
• Remove oil fill cap located in valve cover. • Place drain pan under engine oil pan. Check Engine Oil Level • Remove oil drain plug located at bottom of oil pan and allow engine oil to drain. IMPORTANT : Care must be taken when checking engine oil level. Oil level must be main-tained between the "MIN" mark and the "MAX" mark on the dipstick. To • Remove engine oil filter. Make sure the oil filter gasket does not stick to engine. CAUTION : OIL WILL BE HOT. ensure that you are not getting a false reading, make sure the following steps are taken before checking the • Using a clean shop towel clean the engine oil filter gasket mating surface. CAUTION : OIL WILL BE HOT. oil level.
• Fill oil filter with engine oil. G424 Service Manual Maintenance 17