from Generator Handbook on Onan's website -
http://www.cumminsonan.com/www/pdf/rv/f-1123.pdf
Guide to part numbers for manuals for MicroLite
Series / Spec Letter / Operator's / Parts / Service / Installation
KV / A-B / 981-0129 / 981-0238F / 981-0506 / 981-0626
KV / C-D / 981-0136 / 981-0238F / 981-0518D / 981-0604
KV / E-K / 981-0153C / 981-0238F / 981-0518D / 981-0604
From
http://power.cummins.com/onanpowerWe...do?pageId=1091
The new names for the MicroLite are
MicroLite 2500 LP is now the RV QG 2500 LP
MicroLite 2801 is now the RV QG 2300
Creating an account on
https://quickserve.cummins.com/info/index.html should get you access to the operator's manual, service manual, etc.