Nice purchase!
Here are some CH150 tips from a long-time owner, since this machine is new to you...
1. Lock out the flywheel with the fork doohickey (attached by chain nearby), tip up the housing (I detach the discharge chute first, but you don't have to), and check the condition of both knife edges.
While you're there, poke out any debris that has built up in each knife slot (it can eventually affect balance and cut rate), and clean out the bottom half of the flywheel housing if debris have built up there (we made a rigid hose attachment for a shop vac)
2. from the tractor-end of the
chipper, check the condition of the drive belts and pullies (just in case they are ragged or debris-packed)
3. Before cranking her up, make sure that no woody debris is laying at the base of the chute, up against the flywheel. A short length of 1/2" branch can jam the wheel at low rpm as you begin to engage the PTO
4. When you are chipping, keep a large set of loppers nearby- they are indispensable for the occasional right-angle branch that you missed when cutting and stacking earlier.
5. When the knives need sharpening, don't try to get them done locally on the cheap. You probably can't. The "closest" Valby dealer (even though quite far away) sharpens ours quickly and cheaply because he has the correct heavy-duty milling machine. Folks mail them to him from all over for that reason.
Have fun and be careful!