Lawn Mower Grass Catcher
- Grass Too Tall/Wet
- Deck Too Low
- Dull/Damaged Blade
- Deck Grass Build-up
- Throttle Too Low
- Moving Too Fast
- Poor Engine Performance
- Damage To Deck
- Deck Belt Slip (Tractor)
- PTO Slip (Tractor)
- Wrong Blade
- Grass Bag Matted
In this guide I will cover all the most common grass catcher problems and the solutions.
Mower Chute Clogs
A clogged chute can of course be a symptom of an underlying problem. So clearing the chute may not solve the problem.
Check the chute for damage or old dry grass build up.
Old grass on the deck can cause problems.
Regular cleaning will prevent build up and prolong the life of your mower.
A dull blade will solve lots of cutting and collecting issues.
Most mowers will find these types of conditions challenging.
Tall grass is hard on a mower, especially if your asking it to cut the lawn tight with just one cut.
Tall grass will cause the mower to clog.
To help prevent clogging:
Option 1 - Quick fix is spray the deck with WD40, it does help but it won't last.
Option 2 - Spray deck with DuPont Teflon coating.
Option 3 - Spray the the deck with bed liner, my preferred option. Works on tractors, riders and walk behind mowers.
What Is Mulching?
Mulching Blades aren't designed to collect.
Tall & Wet
Mulching tall wet grass won't work, the blade is designed to cut just small amounts of grass at a time.
Hybrid Mulching Blade
3 in 1
The Hybrid mulching blade, kind of ok at everything.
2 in 1
If you love bagging - You need a lift blade.
Honda 3 in 1
3 in 1
Honda's answer is 2 blades, one for mulching and the other for moving.
Grassbag Won't Fill
Stiff brush or a power washer does the job.
Chute keeps clogging.
Move your mower to a suitable location as it leaves a bit of a mess
Just attach and turn on garden hose. Start your mower to engage blades.
Run until water runs clear - simple!
If you don't have a wash out port or garden hose, no problem.
Turn your mower over air filter side up, use a paint scraper and wire brush. It works great.
Why The Grass Trailings?
Trailings are really annoying, check that the bagger is closing snugly.
Check For Blade Damage
A defective blade can cause vibration, uneven cutting and poor grass collection. Examine your blade, checking for damage, misalignment, bent or broken trailing/leading edges.
Blades need to be kept sharp. I recommend about twice per season or more depending on terrain. Obviously if your blade is dull it can cause all sorts of problems, including blocked chute and grass catcher issues.
When blades hit something hard, well, you know! The damage causes vibration and all sorts cutting issues.
Bent blades can't be repaired, just go ahead and replace them.
What Is PTO Slip?
Check the PTO system. The manual version is engaged by a cable. It lives on the crankshaft, right under the engine.
Check that the cable is pulling the pto lever all the way.
Replacing the PTO isn't difficult, but air tools would make it really easy.
Check Deck Belt Condition
A cutting deck belt that's slipping will be less efficient at collecting.
Check the belt for proper tension, cracking, glazing or contamination.
Damaged belts will cause vibration and poor general performance.
A typical deck belt might last 3 - 4 years.
Old fuel is the number one cause of poor engine performance, use a gas stabiliser over the winter to help protect your lawn mower carburettor, check out "Carburettor troubleshooting".
Mowers like a tune-up at least once per season.