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MTD P61 Series User Manual

MTD P61 Series
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Chapter 2: Basic Troubleshooting
21
10. The port to the PCV hose is near the top of the
chamber. The oil tends to settle out of suspen-
sion, leaving mostly air to exit the chamber
through the PCV hose.
11. The screen accumulates droplets of oil, which
eventually drip down to the bottom of the cham-
ber. Beneath the screen is a drain-back port,
leading to the crankcase. the size of the port is
small enough that significant pressure does not
flow through it. See Figure 2.9.
12. With the cover re-installed and torqued to 27-35
in-lbs. (3-4 Nm), vigorous pumping with a hand
pump vacuum / pressure tester will result in a
slight build-up of pressure within the chamber.
See Figure 2.10.
Figure 2.9
Drain-back port
Figure 2.10
This 2-3 PSI (.14-.20 Bar) build-up will dissipate
through the drain-back port over the course of 5-
10 seconds.
No vacuum should accumulate in the chamber
unless the drain-back port is blocked and the
disc is not moving from over the crankcase port.
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MTD P61 Series Specifications

General IconGeneral
BrandMTD
ModelP61 Series
CategoryEngine
LanguageEnglish

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