Subaru Legacy BN/BS (2015-2019) Owners Manual: General precautions when starting/stopping engine

Subaru Legacy BN/BS (2015-2019) Owners Manual / Starting and operating / Starting and stopping the engine (models without push-button ignition switch) / General precautions when starting/stopping engine

WARNING

Never start the engine from outside the vehicle (except when using the remote engine start system). It may result in an accident.
Do not leave the engine running in locations with poor ventilation, such as a garage and indoors.
The exhaust gas may enter the vehicle or indoors, and it may result in carbon monoxide poisoning.
Do not start the engine near dry foliage, paper, or other flammable substances. The exhaust pipe and exhaust emissions can create a fire hazard at high temperatures.

CAUTION

If the engine is stopped during driving, the catalyst may overheat and burn.
When starting the engine, be sure to sit in the driver's seat (except when using the remote engine start system).

NOTE

Avoid rapid racing and rapid acceleration immediately after the engine has started.
For a short time after the engine has started, the engine speed is kept high.
When the warm-up is completed, the engine speed lowers automatically.
On rare occasions, it may be difficult to start the engine depending on the fuel and the usage condition (repeated driving of a distance in which the engine has not warmed up sufficiently).
In such a case, it is recommended that you change to a different brand of fuel.
On rare occasions, transient knocking may be heard from the engine when the accelerator is operated rapidly such as a rapid start-up and a rapid acceleration. This is not a malfunction.
The engine starts more easily when the headlights, air conditioner and rear window defogger are turned off.

Starting and stopping the engine (models without push-button ignition switch)

...

Starting engine

CAUTION Do not operate the starter motor continuously for more than 10 seconds. If the engine fails to start after operating the starter for 5 to 10 seconds, wait for 10 seconds ...

Other materials:

Inspection
• Check the drive plate for wear and damage.• Check the driven plate for discoloration (burnt color).• Check for worn snap ring, fatigue or damaged return spring or deformed piston retainer.• Replace if its tooth surfaces are broken, damaged or excessively worn.• Check ...