Update- I previously did a review on my new canister filter assembly that I installed on my Husqvarna Z254F and wanted to update anyone that might be interested in installing a air filter restriction indicator, through a lot of research I found the correct indicator for small engines to be a John Deere part # AUC16126 and it comes with all that’s needed to install. Follow instructions for proper installation. Most indicators will read 20” h2o and that’s way past the air filter replacement on a small engine, this one AUC16126 reads 8” h2o and that’s the ideal time for change out. It’s noted to rely on the service reminder indicator and DONOT open up the canister to check filters or even blow out filters, by doing this your putting dirt and debris back into your engine prematurely. By following the service reminder indicator you get the Max protection from your air filter and save's your self money on buying and replacing air filters prematurely.