Today I replaced my Honda XR 650L's stock 2.8-gallon fuel tank with an Acerbis 5.8-gallon tank.

Before the swap: the XR with its stock tank
Before the swap: the XR with its stock tank

My work was quickly halted by the discovery of some uninvited tenants in my airbox — mice.

A mouse nest in the airbox
A mouse nest in the airbox

I cleaned out their bedding and stinky droppings with some carb cleaner — yet another novel use for the stuff. I pulled the sullied filter and prepped a fresh one. To deter future rodent squatters, I dropped a rodent-repellent packet in the box; apparently mice are put off by pleasant scents.

Defensive measures
Defensive measures
Nice smells!
Nice smells!
Come no more, mice
Come no more, mice

Next, I took the seat off and drained the gas from the stock tank into the new one.

Draining the old gas into the new tank while gravity was still on my side
Draining the old gas into the new tank while gravity was still on my side

With the stock tank and fairings off and the Acerbis set in place, I realized the metal nubs that lock the stock tank down interfere with the new tank.

Stock nubs on the chassis foul the Acerbis tank
Stock nubs on the chassis foul the Acerbis tank
A closer look at the offending nubs
A closer look at the offending nubs

I hacked the nubs off and filed them down. I'll come back with some paint later to keep the exposed metal from rusting.

Nubs hacked off and filed down
Nubs hacked off and filed down

Then I zip-tied a piece of gasket rubber to the chassis to pad the new tank.

Gasket rubber zip-tied to the chassis for wear and vibration resistance
Gasket rubber zip-tied to the chassis for wear and vibration resistance

The tank popped on nicely, and I tied the new tank's support arms to the old fairing tie-ins.

Attaching the tank at the old fairing bolt holes
Attaching the tank at the old fairing bolt holes
The bike with the new tank in place
The bike with the new tank in place

I popped the seat back on and — voilà. The new tank looks great, and the bike is ready for longer-distance riding. I also swapped in a longer fuel line to reach the new tank's fuel valve. Down the road, I'd like to add a fuel filter to the system.

The finished build: the XR with its new Acerbis tank
The finished build: the XR with its new Acerbis tank