OLD craftsman 2 hp. tiller

Is there some place that I can find a manual for this old machine ?

craftsman 2 hp. MOD.# 917.629261 tiller

Serial # 3030 W01032 .

It is a chain drive, to the tines, Is there any way to lube ?

The chain & tine bearings are enclosed in a tin case, Can not see any filler or way to check for lube!

Thanks Al H