Start the engine and let it run for 3 or 4 minutes. Then, shut the engine down and remove the oil filler cap on the oil tank. The cap has the dipstick attached to it. Insert the dipstick down in the oil tank but don't screw it in. The oil level should be between the two marks.
GN4 Honda oil only.
2.6 quarts
2.6 Quarts
10w-40 G4
A Honda 400ex is rated to hold 5 quarts of motor oil. This includes the oil stored in the oil pan and the filter which are replaced during an oil change.
The dipstick for oil on a Honda 400EX is located on the right side of the engine, near the rear. It is integrated into the oil filler cap, which you can unscrew to check the oil level. To properly check the oil, make sure the quad is on a level surface and the engine is warm but not running.
1.9 us quarts
about 2 qt.
2.3 quarts
On a Honda 400EX, the oil dipstick is located on the right side of the engine, near the rear. It is attached to the oil filler cap, which is typically marked with an oil symbol. To check the oil level, simply remove the dipstick, wipe it clean, reinsert it without screwing it in, and then check the level indicated on the dipstick.
On a 400ex the engine and transmission share the same oil. So when you change the oil in the engine you are changing the transmission oil as well. That is why you need an ATV or motorcycle oil designed for wet clutches.
1.9 US qts. Be sure to drain oilpan AND crankcase when changing oil.