I know my 23 big bend with the 1.5 says 4.5 qts but, mine has the plastic pan which really takes 6.6quarts. I only found out on the 1st oil change i did at home. I filled it with the 4.5 qts. I backed it off the ramp and shut it down and was wondering why the dip stick didn’t have a read on it. If yours is a 1.5 and assuming everything else is ok id say they didn’t add enough oil.
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