Yanmar question

[Sandy Stone]

Also, I believe the Atomic 4 has a shared oil system for the engine and transmission.

 

[dlochner]

Just for the record, many, possibly most, motorcycles share engine and transmission oil with one sump.

Also, I believe the Atomic 4 has a shared oil system for the engine and transmission.

Well, ya learn something new every day. My biking days are decades past and I can't remember clearly how the transmission on my Honda was lubricated.

As for the A4, according to the manual, it depends on the transmission. some have a hole drilled in the crankcase to feed oil into the transmission. Hydraulic transmissions are lubricated separately.

https://www.westerbeke.com/operator's manual/200156_atomic4_operator_man.pdf

 

[twodzusfittings]

if it is red, it is probably ATF, amber is probably oil (it should not get black like the engine oil).

Unless you acquire a nice 30' Oday for a few hundred bucks, spend 2 years repairing and restoring and when changing the transmission oil for the very first time find a dark brown liquid with a burnt smell to it. Just saying!!!!