Started the engine to try another idle speed adjustmentand. It was taking too long to get the oil temp to reach 122 degrees F. After over 30 minutes with the engine running the temp was still 111 degrees. The outside temp was in the mid 40's and the cowl bottom was not installed which could be the reason why it was taking too long to reach normal operating temperature. Decided to shut the engine down and try again on another day. Installed the bottom cowl for the next engine run.