John Deere z425 - Manual (Page 22)

Service Engine - 21
SERVICE ENGINE
6. Check oil level on dipstick. Oil must be between ADD and FULL marks.
7. If oil level is low, add oil to bring oil level no higher than FULL mark on
dipstick. Do not overfill.
8. Install and tighten dipstick.
Changing Engine Oil and Filter
1. Run engine to warm oil.
2. Park machine safely on level surface. (See Parking Safely in the
SAFETY section.)
3. Clean area around dipstick to prevent debris from falling into crankcase.
Single cylinder Briggs and Stratton:
MX37942
MX38113
1. Put drain pan under hole (A) of drain valve (B), and remove drain cap
(C).
2. Install drain hose (D) onto end of drain valve. Loosen engine dipstick.
Turn drain valve counterclockwise and pull outward to allow oil to drain
completely.
3. Push drain valve inward, and turn clockwise to tighten. Remove drain
hose, and install drain cap.
4. Add oil no higher than FULL mark on dipstick. Begin with approximately
1.2 L (1.25 qt). Do not overfill.
5. Install and tighten dipstick.
6. Start and run engine at idle to check for leaks. Stop engine. Fix any
leaks before operating.
7. Check oil level. Add oil if necessary.
IMPORTANT: Avoid damage! Operating in extreme conditions
may require more frequent service intervals:
• Engine components may become dirty or plugged when
operating in extreme heat, dust or other severe conditions.
• Engine oil can degrade if machine is operated constantly at slow
or low engine speeds or for frequent short periods of time.
IMPORTANT: Avoid damage! Dirt and contamination can enter
engine when checking oil level. Clean area around dipstick before
loosening or removing.
C
A
B
D
B C