John Deere z425 - Manual (Page 23)

Service Engine - 22
SERVICE ENGINE
Twin cylinder Briggs and Stratton:
MX37943
MX38114
1. Raise seat, and put drain pan under drain valve (A).
2. Install drain hose (B) onto bottom end of drain valve. Loosen fitting (C)
to drain oil into drain pan.
3. Loosen dipstick (D), and allow oil to drain completely.
MX37939
4. Wipe dirt from around oil filter (E). Place a drain pan under oil filter, and
remove old filter.
5. Put a light coat of fresh, clean oil on the new filter gasket.
6. Install replacement oil filter by turning oil filter to the right (clockwise)
until the rubber gasket contacts filter base. Tighten filter an additional one-
half turn.
7. Tighten oil drain fitting (C), and remove drain hose (B).
8. Add oil no higher than FULL mark on dipstick. Begin with approximately
1.6 L (1.75 qt). Do not overfill.
9. Install and tighten dipstick.
10. Start and run engine at idle to check for leaks. Stop engine. Fix any
leaks before operating.
11. Check oil level. Add oil if necessary.
Twin cylinder Kawasaki:
MX37910
1. Put drain pan under drain valve (A), and loosen drain valve to drain oil
into drain pan.
2. Loosen dipstick (B), and allow oil to drain completely.
3. Wipe dirt from around oil filter (C). Place a drain pan under oil filter, and
remove old filter.
4. Put a light coat of fresh, clean oil on the new filter gasket.
5. Install replacement oil filter by turning oil filter to the right (clockwise)
until the rubber gasket contacts filter base. Tighten filter an additional one-
half turn.
6. Tighten oil drain valve (A).
7. Add oil no higher than FULL mark on dipstick. Begin with approximately
1.5 L (1.6 qt). Do not overfill.
8. Install and tighten dipstick.
9. Start and run engine at idle to check for leaks. Stop engine. Fix any
leaks before operating.
10. Check oil level. Add oil if necessary.
Cleaning Air Intake Screen and Engine Fins
1. Park machine safely. (See Parking Safely in the SAFETY Section.)
C
A
D
C
A
B
E
c
CAUTION: Avoid injury! Compressed air can cause debris
to fly a long distance.
• Clear work area of bystanders.
• Wear eye protection when using compressed air for cleaning
purposes.
• Reduce compressed air pressure to 210 kPa (30 psi).
IMPORTANT: Avoid damage! An obstructed air intake screen can
cause engine damage due to overheating. Keep air intake screen
and other external surfaces of the engine, including cooling fins,
clean at all times to allow adequate air intake.
A
C
B