Jinma chipper feeder drum belt replacement

[billsanfilippo]

I recently picked up a Tytan wood chipper here on the Big Island of Hawaii. The research I have done on line shows it is identical to a Jinma 6". Have not been able to find a repair manual for either a Tytan or a Jinma' My question is changing the belt that drives the feeder drum. I have run he chipper and it works OK but the feeder belt is not long for this world and when I look at the pully that is attached to the main drive shaft there appears to be only 1/8-1/4" between the pully and metal behind it. Does not appear to be enough to slip a belt between the two??

Also while I'm at it any manual info on adjusting the feed roller etc. Thanks in advance