Airflow Inspection
1. Remove the vacuum hose..
2. Blow air into the vacuum hose using your mouth from the vacuum pump side and verify that the air flows to the intake manifold side, then blow air from the intake manifold side and verify that the air does not flow to the vacuum pump side.

If there is any malfunction in the check valve, replace it with the vacuum hose as a single unit..
Air Bypass Valve Inspection [Mzr 2.3 Disi Turbo]
Compression Inspection [Mzr 2.0, Mzr 2.5]Vehicle load limits
The Subaru Solterra vehicle load limits define the maximum allowable
weight parameters, including total load capacity, seating capacity, TWR (Trailer
Weight Rating), and cargo capacity, all of which must be respected for safe operation.
Understanding and correctly applying these limits in the S ...
Identification Number Locations
Vehicle Identification Number (VIN)
Engine Type/Number
MZR 2.0, MZR 2.5
MZR 2.3 DISI Turbo
SKYACTIV-G 2.0
...
Engine Disassembly/Assembly [Skyactiv G 2.0]
CAUTION:
When the transaxle is installed, do not suspend the engine. Otherwise, the
SST installation area of the cylinder head may be damaged due to excess weight.
Only suspend the engine after separating the engine and transaxle.
Applying excessive force (force of 100 N {10.2 ...