Recommended Onan 4,500-Watt Portable Inverter Gas Generator
Updated 06/11/2026 | Published 06/10/2026
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Question:
Does running this generator at different altitudes create a problem
asked by: John K
Expert Reply:
Yes, it will John. Generators like the Onan 4,500-Watt Portable Inverter Generator item # CM76MR start losing 3.5% of their electrical capacity at 2,000'. They'll drop an equivalent amount for every 1,000' of elevation you increase. The standard carburetor setting that works up to 2,000', delivers a fuel air mixture that is too rich.
Cummins does have an High Altitude Carburetor Kit pn A058V024 available on their website. It has different jets that work with altitudes up to 7,000'.
How high of an elevation are you planning on using the Onan item # CM76MR?
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Product Page this Question was Asked From
Onan 4,500-Watt Portable Inverter Generator - Gas - Remote Start
- Generators
- Inverter
- Gas
- 4001 Watts or More
- Portable Generator
- 120V Output
- Carbureted
- Electric Start
- Recoil Start
- Cummins Onan
more information >
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