Re: err... no
The Luftwaffe had spent six months over the UK proving just how hard it was to destroy heavy machinery of the like used to repair ships at Pearl Harbor. If you didn't score a direct hit then it was pretty common for the machinery in question to be back in operation within a day or two once the shrapnel had been pulled out. It took incendiaries to melt and warp the machinery to truly take it out. In other words, taking out the repair facilities would have been pretty much impossible.
Likewise the fuel tank farms were full of fuel oil, not exactly known for catching fire at the drop of a hat - indeed it's used as torpedo protection on most ships. The US Pacific had only been based at Pearl Harbor since 1940 - prior to that it had been at San Diego. It was recognised that the Pearl tank farm wasn't big enough to support the fleet there long term. Work had begun on enlarging it and meanwhile the two ideas were to have fuel tanker ships in the harbour and to dig a vast trench and line it with rubber and fill that with oil. The second technique was later used very successfully on various Pacific Islands.
So even if the Japanese had managed to hit and ignite the tank farm and the fire fighters were completely incompetent and the whole farm was lost, it's still not the "six months lost" that people claim.