Walker B27i Operator's Manual page 53

B27i
7. Reinstall the elbows. When the elbow begins
to be snug, position the elbow as it was when
removed and tighten the locknut. Reinstall
reservoir hoses to elbows.
8. Fill reservoir to 1/4-1/2 in. (6-13 mm) with
20W-50 (API Service Class SL or higher) oil.
9. Start and drive the unit for 1-2 minutes.
10. If the transaxles sound noisy or have poor
steering response, there may be air trapped in
the transaxles. Follow purge instructions
below.
11. If oil needs to be added, refer back to steps
5-10.
12. To purge air from transaxle, raise tractor and
block with tires off the ground. With engine
running, slowly move Forward Speed Control
forward and backward 5 to 6 times. Turn off
engine and check oil level and add if needed.
Repeat procedure until transaxles operate at
normal noise levels and move smoothly in
forward and reverse.
Maintenance Instructions
Lubrication
49