cutter problems

Good Day, we have a Polar 66 cutter (2001 Model) and it is no longer cutting through the stack of paper. (It will only cut through 1/3 or 1/4 of the stack) We have a new blade in, hydraulic oil is full, sheer bolt seems intact and need help diagnosing it. No error codes are being display on...

i have a 1998 Polar Cutter 176ED. I keep getting error codes 654, 608, 78 and most recently 701. Code 78 is the code most repeated. We have been able to clear and continue cutting for several hours or days error free but now we are receiving the one of these codes with most every cut. I...