Maintenance for CB77 Oil filter

[Fastwater]

Does the oil filter in the Superhawk 305 engine require maintenance?
I realize it is centrifugal but where does all the badness go? With that, is it difficult to check?

[e3steve]

You need to remove it, disassemble and clean it out. Don't try to be a gynacologist and remove it through the access cover; be sure to have a new clutch cover gasket to hand, drain the oil, remove the clutch / l/h crankcase cover to access the filter.

When refitting, remove the round access cover from the main cover and refit the main cover first. There should be a thrust washer that goes on the filter shaft between the filter itself and the crankcase, not between the filter and the round access cover.

BIG BLOODY NOTA BENE: What I wrote above is total bollox; please read the rest of this topic -- including my retraction!

[LOUD MOUSE]

The washer goes on the shaft first then the filter.
If the washer isn't on that end the filter cap will eat the cover at the shaft area. (aluminum against aluminum). ................lm

You need to remove it, disassemble and clean it out. Don't try to be a gynacologist and remove it through the access cover; be sure to have a new clutch cover gasket to hand, drain the oil, remove the clutch / l/h crankcase cover to access the filter.

When refitting, remove the round access cover from the main cover and refit the main cover first. There should be a thrust washer that goes on the filter shaft between the filter itself and the crankcase, not between the filter and the round access cover.

[gramey7]

Now I'M confused. The CL77 Parts Catalog shows the washer being instlled adjacent to the shaft pin. Also Bill Silver's Resto guide says to "install the thrust washer outside of the filter assembly, next to the shaft locating pin."
I'm not sure this is really a "thrust" washer anyway, since there are no lateral loads on the filter. I suspect it provides a buffer between the filter and the shaft pin.

[deaddog]

The washer goes on the shaft first then the filter.
If the washer isn't on that end the filter cap will eat the cover at the shaft area. (aluminum against aluminum). ................lm

Do yourself a favor and listen to Loud Mouse. This has been discussed in length on other threads.

[LOUD MOUSE]

You have the correct location but the washer never touches the pin.
Put it on the wrong end and ride a 1000 miles and you will see how much thrust there is at that location. (aluminum against aluminum eats aluminum). ...............lm

Now I'M confused. The CL77 Parts Catalog shows the washer being instlled adjacent to the shaft pin. Also Bill Silver's Resto guide says to "install the thrust washer outside of the filter assembly, next to the shaft locating pin."
I'm not sure this is really a "thrust" washer anyway, since there are no lateral loads on the filter. I suspect it provides a buffer between the filter and the shaft pin.

[gramey7]

Thanks LM and deadog for clearing that up; I wasn't intending to question anyone's expertise, just to clarify the correct location.