My4sons M4 Backpack Sprayer with Agitator Pump Installed

The M4 is the highest-rated sprayer on the market, offering the most power, control and reliability for all of your spraying application needs. 

(Ships from the warehouse the same day if order is placed before 2PM Pacific- UPS Ground Arrives in 3-5 Business Days)  

Also offering an upgraded version including our new Lithium Ion battery and charger for longer lasting battery life. Check the dropdown menu for various upgraded versions. 

If you already own our M4 Backpack sprayer check out our upgrade kit that works with any M4 backpack sprayer. This will allow you to install the agitator kit into your existing unit. 

 Perfect for the DIYer or the industry professional, the M4 Basic System includes: 

• This Bundle includes a standalone agitation pump upgrade to keep your solution moving even when you aren't spraying. 
• An automatic, 80 PSI pump with adjustable pressure output to reach up to 36ft
• Rechargeable lead acid/lithium ion battery with status indicator lights.
• DC charger for complete battery recharge in approximately 8 hours (must use only this charger with the M4)
• Translucent tank with large-mouth opening for easy filling and screen filter to protect against dirt/debris
• Watertight neoprene lid seal
• Heavy-duty, reinforced hose for high temperature and high pressure
• Heavy duty, extra-long adjustable length stainless-steel wand with flexible tip for precision application
• Heavy-duty plastic wand with durable connectors for applying acid or bleach-based products
• Ten different nozzles including adjustable brass cone, fan, fog, and a flexible 90 degree nozzle great for reaching those impossible to reach spots. 
• One-piece valve handle for improved reliability and ergonomics
• Unmatched Triple thick XXL shoulder straps for best in class comfort and safety
• Locking trigger and on/off switch that’s accessible during use for improved ergonomics
• New and improved quick-access battery door
• 10 amp inline fuse integrated with the charge plug
• Wand and nozzle Pocket for storing smaller parts and wands when not in use.

Final assembly and quality testing in the US.

READY TO USE IN SECONDS, the M4 provides a reliable application of most natural and chemical solutions including Roundup, Thomson’s Water Seal, Mark It Blue, Wet and Forget, Bora Care, etc. 

Plastic wand is compatible acids and bleaches* 

Don’t forget to check out our nozzle attachments (included)!

Price includes shipping and reflects a 10-20% discount. (UPS 3-5 day ground)

2 Year Warranty 

Now offering emergency overnight part delivery. (Does not include battery). 

Ships from the warehouse the same day if order is placed before 2PM Pacific- UPS Ground Arrives in 3-5 Business Days

Returns: If the units is unused we offer a 30 day money back guarantee not including the return shipping costs.  

For immediate assistance contact Paige (707-331-0971)