While they are easy to maintain in situ, I give mine a full cleaning at the beginning of any season or anytime it seems to be running a little ragged. Some signs that your Whisperlite needs cleaning are uneven or “coughing” jets, leaking fuel, difficulty starting or holding pressure, or any other problems pertaining to performance. Even if your stove isn’t exhibiting signs of being dirty, it is a good idea to give it a good clean once a year. Here’s how:
If you don’t already own an MSR Maintenance Kit, go get one. Just the basic kit is all you need for regular maintenance. The basic kit contains extra parts, tools specific to your stove, and a helpful diagram to help you keep all the parts together. If it has been a while since you did any maintenance on your stove, the “expedition” kit might be the way to go. This contains a more comprehensive set of replacement parts, including a pump cup- a part that without regular maintenance and lubrication, can pretty easily become cracked.
I was excited to provide step-by-step instructions on cleaning a whisperlite, with beautiful, detailed pictures I took all on my own, but then a quick internet search revealed that in fact there is a multitude of info out there on cleaning these legendary stoves, including some great videos from MSR themselves. Rather not get in the way of the experts, so…
Pump Cup Maintenance and Cleaning
Stove Maintenance
Well there you have it, your Whisperlite stove is all ready for another glorious year keeping you fed and well-hydrated in the backcountry!
–Andy Stephen, AAI Instructor and Guide