Mark,
I believe the chainsaw is overkill for hacking into pallets and scavenged timber for the fire. In addition to my cheap Bosch circular saw I have a Makita UC3520 ? electric chain saw, currently £96 at Axminsters. I sold my old 50cc petrol 20" blade MuCulloch to buy this, as I no longer needed or wanted something so big and heavy. To my surprise the Makita is more capable, although cannot be used in the middle of a field. I only use this on wet logs, branches etc. After each use, that is generally a good couple of hours, it gets a good clean as it does get fairly caked up due to shavings and sticky chainsaw oil. As regards safety ware, its goggles, gloves and a fleecy top/sweater. Although this does not tick all the H&S requirements it at would at least go some way towards clogging up the chain if it got caught.
Colin