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M4 Bundles
DeWalt Milwaukee and other battery upgrade options
Parts and Accessories
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DAILY DEALS
NEW PRODUCTS
NOZZLES (QR, Flexi, Fan, Cone, , Multinozzle, etc)
HOSE (15ft, Coiled, Standard, Elbow, etc)
WANDS (14ft telescoping, 4 boom, etc))
M4 BUNDLES (Bronze, Silver, Gold, Platinum, etc)
ELECTRIC
CARTS (Standard 7in, Monster 14in)
VALVES/PISTOLS
QUICK RELEASE/WASHERS/O-RINGS/ADAPTERS
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Quick Release
Washers/O-rings
Adapters
LIDS/FILTERS/POCKETS/STRAPS/BASE PLATE SCREWS
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Lid
Filters
M4 Pockets and storage
Straps/Buckles
Base plate screws
Videos
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New Customer
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-
Quick start
Overview of parts shipped with the M4 Backpack Sprayer
Nozzle kit Overview
Assembly and final inspection
My4sons Quality Care
Top 10 reasons why the MY4SONS M4 is rated #1 on amazon
Customer Testimonials
M4: Charging and rotary switch use
How to prime the M4 Backpack Sprayer using A garden Hose
Build a boom
New For 2022
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-
New For 2022
M4 Backpack Sprayer Upgrades in 2021
Monster Cart
Part/Accessories
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-
14 ft telescoping wand video
14ft telescoping wand adapting to other sprayers
M4 New super wide XXL water Tight Lid Seal
Wide Lid Preview
Spray Pistol
New Wireless Remote Control for the M4!
2021 Electrical Upgrade Kit
Battery and Multimeter
About Us
+
-
Assembly and final inspection
Customer Testimonials
Contact us
My4sons Quality Care
Troubleshooting
+
-
Quick Fix#1 no power, no voltmeter lights
Quick Fix #2 no power but voltmeter lights on
5 step diagnostic checklist
M4: Charging and rotary switch use
Is my battery good?
Solving a collapsing tank
Maintenance
+
-
The best way to wire the M4
Securing Shoulder Strap anchor screw
Changing the red valve handle piston
Getting rid of leaks
How to prime the M4 Backpack Sprayer
Part Replacement
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-
Replacing the pump
Replacing a broken pump neck
Replacing the red and rotary switches
FAQ
Testimonials
Contact / About
+
-
Favorite Quotes About Invention
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Create account
Search
Home
Benefits
M4 bundles
M4 Bundles
DeWalt Milwaukee and other battery upgrade options
Parts and Accessories
DAILY DEALS
NEW PRODUCTS
NOZZLES (QR, Flexi, Fan, Cone, , Multinozzle, etc)
HOSE (15ft, Coiled, Standard, Elbow, etc)
WANDS (14ft telescoping, 4 boom, etc))
M4 BUNDLES (Bronze, Silver, Gold, Platinum, etc)
ELECTRIC
CARTS (Standard 7in, Monster 14in)
VALVES/PISTOLS
QUICK RELEASE/WASHERS/O-RINGS/ADAPTERS
Quick Release
Washers/O-rings
Adapters
LIDS/FILTERS/POCKETS/STRAPS/BASE PLATE SCREWS
Lid
Filters
M4 Pockets and storage
Straps/Buckles
Base plate screws
Videos
New Customer
Quick start
Overview of parts shipped with the M4 Backpack Sprayer
Nozzle kit Overview
Assembly and final inspection
My4sons Quality Care
Top 10 reasons why the MY4SONS M4 is rated #1 on amazon
Customer Testimonials
M4: Charging and rotary switch use
How to prime the M4 Backpack Sprayer using A garden Hose
Build a boom
New For 2022
New For 2022
M4 Backpack Sprayer Upgrades in 2021
Monster Cart
Part/Accessories
14 ft telescoping wand video
14ft telescoping wand adapting to other sprayers
M4 New super wide XXL water Tight Lid Seal
Wide Lid Preview
Spray Pistol
New Wireless Remote Control for the M4!
2021 Electrical Upgrade Kit
Battery and Multimeter
About Us
Assembly and final inspection
Customer Testimonials
Contact us
My4sons Quality Care
Troubleshooting
Quick Fix#1 no power, no voltmeter lights
Quick Fix #2 no power but voltmeter lights on
5 step diagnostic checklist
M4: Charging and rotary switch use
Is my battery good?
Solving a collapsing tank
Maintenance
The best way to wire the M4
Securing Shoulder Strap anchor screw
Changing the red valve handle piston
Getting rid of leaks
How to prime the M4 Backpack Sprayer
Part Replacement
Replacing the pump
Replacing a broken pump neck
Replacing the red and rotary switches
FAQ
Testimonials
Contact / About
Favorite Quotes About Invention
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Wand pockets and storage
Wand pockets and storage
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