2017 CAT 308ECR , ENGINEPOWER: 66 HP, LENGTH OF STICK: 2200 MM, Online Owner's Manual , OPERATING WEIGHT: 8.4 T, UNDERCARRIAGE IDLERS: 50 %, UNDERCARRIAGE SPROCKETS: 50 %, UNDERCARRIAGE TRACK LINKS: 50 %, UNDERCARRIAGE TRACK ROLLERS: 50 %,