If you turn the spreader upside down there is a chart inside on the actual spreader itself. You can also view the calibration chart by clicking the link below.
Yes, the PlantMates Broadcast Shoulder Spreader can be used to spread lightweight fertilizer. The spreader comes with an adjustable shoulder strap for easy carrying.
We will be happy to email you a new calibration chart for your PlantMates Broadcast Shoulder Spreader. You are also welcome to contact PlantMates directly at 713-910-4420 if you need further assistance.
Unfortunately, there is not product manual on our website or the website of the manufacturer that tells you where the on/of button is for the PlantMates Broadcast Shoulder Spreader (76300). I would suggest contacting the manufacturer (PlantMates) directly for more information. Their contact number is (713) 910-4420.