Reply To: Compression for 58 Johnson 10 hp?

[cron78]

Dropped the lower unit.  Both o-rings on the spacer tube on top of the impeller housing are rough and I will replace them.  There also isn’t an o-ring at the top of the drive shaft so I’ll get one for it, too.  Are there generic/industrial o-ring sizes that are matches for 301967, 302035, and 303067.  Just wondering even though I will probably go to the local marine shop to support them.  They have usually been able to get parts if they don’t have them in stock.

I forgot to check the gear oil before I removed the lower unit.  I’ll do that next.  Should I be able to change forward/neutral/reverse by hand by moving the shift shaft?