Rainmaker 4 Gallon & 5 Gallon Spare Parts Kit

Restock Wear Parts Without Replacing the Sprayer, 4 & 5 Gallon Fit

The parts that see the most wear on a sprayer — the lance, spray tip, and O-rings — are also the parts most likely to need replacing before the sprayer body itself does. This Rainmaker Spare Parts Kit bundles those wear items into one kit, covering both the 4 Gallon Backpack Sprayer and 5 Gallon Battery Powered Sprayer instead of requiring separate part numbers for each.

This kit is sized for growers maintaining one or both of these specific Rainmaker sprayer models, restocking spray tips and seals as part of regular sprayer upkeep.

Key Features & Benefits

• Replacement lance assembly — includes handle, lance, and spray tip as one unit.
• O-rings included — replace worn seals that can lead to leaks at fitting connections.
• Additional spray tips — lets growers swap tips for different spray patterns or replace a clogged or worn tip.
• Fits two sprayer models — compatible with both the Rainmaker 4 Gallon Backpack Sprayer (708902) and 5 Gallon Battery Powered Sprayer (708900).

Who Should Use This Kit

This kit fits owners of the Rainmaker 4 Gallon Backpack Sprayer or 5 Gallon Battery Powered Sprayer who need to replace a worn lance, spray tip, or O-ring rather than the entire sprayer. Owners of other Rainmaker models, such as the 18 Volt Lithium Ion Backpack Sprayer or 2 Gallon Pump Sprayer, should confirm compatible parts before ordering.

About Rainmaker

Rainmaker manufactures manual and battery-powered sprayers along with matching spare parts kits, chargers, and batteries, supporting ongoing maintenance of its sprayer lines rather than requiring full replacement at first sign of wear.

Frequently Asked Questions

Which sprayers does this kit fit?

This kit fits the Rainmaker 4 Gallon Backpack Sprayer (model 708902) and the Rainmaker 5 Gallon Battery Powered Sprayer (model 708900).

What parts are included?

The kit includes a replacement lance assembly with handle, lance, and spray tip, along with O-rings and additional spray tips.

How do I know if I need the O-rings replaced?

Leaking at hose or tank connections is a common sign that O-rings have worn out and need replacing to restore a tight seal.

Can I use this kit on the Rainmaker 2 Gallon Pump Sprayer?

This kit is specified for the 4 gallon (708902) and 5 gallon (708900) models; compatibility with the 2 Gallon Pump Sprayer or the 18 Volt Lithium Ion Backpack Sprayer is not listed, so growers with those models should check for a model-specific parts kit instead.

Why replace parts instead of buying a new sprayer?

If the sprayer tank and pump mechanism are still in good condition, replacing just the worn lance, tip, or O-rings is a lower-cost way to restore full function than buying an entirely new unit.