Cat 303 Cr won't start - Caterpillar E70B Excavator

goto this link might help you out.
honda Cr won start Google Search

u'd need a proper manual for this in my opinion
like there are plenty of dealers and online shops that deal in those..
you can get some free at https://www.reliable-store.com/ and quickly also 24x7 live help no kidding

take reference from https://www.reliable-store.com/
error codes/ fault codes, wiring diagrams, schematic diagrams, torque specs,
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check cat converter. may be bad and causing your issue. Most auto parts stores will read your codes and tell you what they are.

What about this? Send details.

I put a new battery in Honda CR-V car still dead no lights nothing tried jumping it still nothing could it be alternator on battery cables?

Check out these wonderful websites and create your own customized cat bowl: http://www.cafepress.com/make/custom-pet-gifts and http://www.zazzle.com/cr/design/pt-zazzle_petbowl.

change your sparkplug bus use a BR9SE sparkplug

Download now :- Caterpillar 303 CR Mini Hydraulic Excavator Operation and Maintenance...

The O2 sensor is before the cat, the cat performance monitor (which looks like an O2 sensor) is after the cat.