Birchmeier Backpacks - Lubrication is Critical

Want your Birchmeier backpack sprayer to last? Keep it well lubricated. It's the single most important maintenance step for a Birchmeier, and the one most often skipped.

How the Grease Reservoir Works

Birchmeier backpacks have a built-in grease reservoir that holds the grease and a grease cap (piston) that applies it to the pump unit. Turning the cap pushes fresh grease into the pump, keeping the moving parts lubricated and the seals working smoothly.

How Often to Grease Your Birchmeier

Turn the grease cap about a half turn once a week, or more often if you spray daily. When the reservoir runs low, refill it with Birchmeier grease, which is made specifically for Birchmeier backpack sprayers.

Signs Your Backpack Needs Grease

The most common sign of inadequate lubrication is that the backpack becomes hard to pump. If the handle feels stiff or rough, grease it before you keep working. Pumping a dry unit puts extra stress on the pump and the frame.

Why It Matters: Warranty

We've seen several backpacks, still within the warranty period, where the metal frame snapped at the tab that attaches it to the backpack. Birchmeier declined to cover these under warranty, stating the units had been inadequately lubricated. A few seconds a week with the grease cap protects both your sprayer and your warranty.

Watch: Keeping Your Birchmeier Greased

This short video shows how to keep your Birchmeier well-greased.

Annual Maintenance

Along with weekly greasing, we recommend replacing the check valve and O-rings and rebuilding the spray valve once a year. Everything you need is in our Birchmeier repair kits and Birchmeier parts. For more tips, see our Birchmeier sprayer maintenance guide.