MTD P90 series Shop Manual page 60

P90 Series Vertical Shaft Engines
6. Inspect the oil drain-back port. Make sure it will
allow oil to drain back into the engine.
See Figure 5.10.
7. Reassemble the PCV valve.
8. Tighten the cover bolts to a torque of 53 - 71 in lbs
(6 - 8Nm).
9. Inspect the PCV tubing for cracks, brittleness or
signs of leaking. Replace the PCV tube if any are
found. See Figure 5.11.
10. Re-assemble the engine by following the above
steps in reverse order.
11. Test run the engine before returning to service.
54
Oil drain port
Figure 5.10
Figure 5.11
PCV
chamber
cover
PCV tubing