honda f501 rotovator

hi all, new member here, Im a full time pest controller, just to let you know a little about me, live in essex, but onto the question, picked up the above rotovator few weeks back, very very resonable price, and even though its probably a little overkill for the size of our garden, it was too good an offer to miss, everything works fine, great starter etc, but when I filled up the bottom crank area with oil, yup it all leaked out both sides, now the bearings seem fine, but do these supose to have oil seals in front of bearings, or are they all built it, thus meaning new bearings??
have tried google searches for spares and advice and drawn a blank on both
so thought there may be some good folk here with advice,links etc

cheers all

  hi ratcatcher just finished my allotment with my Honda f501 its a great machine , on taking my  honda f 501 back home i cleaned the tines and put it away ,next day i went and had a check of it and it had leaked on one side of the seal i rang around locally with no joy, so i got the honda out and got all tools i might need  and started to remove the half plates  surounding the drive shaft first removed one bolt and nut and two bolts  and noted two flap hinges ,i got got hold of the tabs and straitend  them  with some long nose plyers and pulled the two halfs apart which  revealed the crankshaft and the two seals one larger than the other,the right side is 32mm x 52 x11mm  and the left is 32mm x58mm x11mm and cost me £32.00 inc vat from w h a vowles& son market place patrington hull hu12 ore , so just waiting for them now so easy to take out just prize the edge of them with a blunt blade like paper scraper 5mm all the way around and ease them out ,once you have the new ones put a bit of greese in and around the inner seal rubber and fit them evenly  and gentley and you will need  some ep 90 gear oil to put back in , part no are for right side is 91205-733-703    part no for left side is 91206-733-703 hope that helps you , i will let you know how i get on.  ps the bearings are separate from the seals,  the whole job took me 15 minutes max  best regards tony