Info from hotshot. Found both the aftermarket PTO side seals manufactured by Dichtomatik. BTW, neither of the OEM Poulan 306/245 PTO side seals are a garter spring type pressure seal, both are the V seal designs but have worked well for thirty years or more & the new ones passed pressure/vacuum testing fine. Both of my saws have new seals & oiler plunger quad rings now all through, and they run great. The OEM outer seal for the oiler cover is 5/8" x 7/8" by an 1/8" in width, Poulan 530019035. The inner PTO side seal is Poulan 5300001936, both are metal OD, V type lips.
Here's their website, https://catalog.dichtomatik.us/ Go to the Product Information tab & download the catalog, it's rather large but quite worth reading through. Seals are on page 71 & 74.
The inner seal is a #068091VM. There's only one design choice available, V seal & Metal OD.
The outer seal I used was a #060809VC . It's also a V seal with a rubber coated OD and thinner at 0.094" width. I don't think a pressure type garter is necessary, as the oiler cover flanges fits loosely. If they made a metal OD VM type, I would have preferred that.
There are three other outer PTO seals available in the correct dimensions, one is a #0608709VC & shows to be only 0.001" wider, WTF is up with that??
The other two seals are true garter spring designs, the 06081SM & 060871TZ-H. The SM is a single lip metal OD type, and the TZ-H is a dual lip metal OD type with a factory sealant coating on the OD. Both of the garter types are an 1/8" wide.
Don't forget to put sealant on the two larger oiler cover bolts when you put the cover back on, as that's a direct shot into the crankcase! In other words, you can't pressure/vac test unless you plug those holes.
Well, my thought was right on the two catalog sizes listed for this little seal. Just got around
last week to call the Dichtomatik sales office in Houston to check.
The Dichtomatik catalog is wrong & has two part numbers duplicated on page 71. The correct
number for the P306 outside pump cover grease seal is 0608709VC, which is 7/8" OD. The
part number 060809VC is a 0.813" OD & would be too small.
Also found out that Fastenal can get this seal brand shipped to their locations in just a few
days, usually from a central warehouse in Shakopee, Minnesota.
Well crap, I (tried) using another 0608709VC rubber coated oil pump cover seal, and it won't stay put. With all the
grease that you packing into the gear housing, then have to install the cam end up into the seal before you install
the gear set, the greasy seal pops just back out of the cover housing. There is no backstop/ledge for this seal application,
as the 7/8" hole in the cover is bored straight through. The first one I used did fine, but I installed it after degreasing and used some Dirko HT on the outside edge. I don't suggest using this slippery type 0608709VC rubber OD seal.
Ues the DICHTOMATIC #06081SM seal, which has a STEEL CASE OD & uses a garter spring to back the NBR nitrile lip.
Picked up a half dozen of the DICHTOMATIC #06081SM seals at Fastenal today, and they are the correct ones for
oil pump gear cover on the P245/306 series saws. The only difference is that these are garter spring backed, and not the
simple V lipped grease seal that was factory installed by Poulan. If you want pics, and I can some post later on.
Unless MM needs help on the Speigel 223 seal, this thread is wrapped up like fishing line on your lawn mower shaft!