Gas Roof Pump Kit – Honda P40 with Electric Start

• Not for sale in California due to california carb regulations.

The Gas Roof Pump Kit with Honda P40 Electric Start is a professional softwash system built for roof cleaning, house washing, and exterior surface treatment. Powered by a dependable Honda gas engine, this kit is paired with the P40 diaphragm pump to deliver strong, consistent flow and excellent chemical resistance. The electric start feature ensures quick, hassle-free operation, making it ideal for contractors who need efficiency, durability, and performance on every job.

Key Features & Specs:

• Pump: P40 Diaphragm Pump
• Engine: Honda gas engine with electric start
• Heavy-duty construction with chemical-resistant components
• Reliable and consistent flow for softwash applications
• Electric start for convenience and time savings
• Perfect for applying bleach mixes, surfactants, and cleaning solutions
• Designed for professional roof cleaning, house washing, and exterior restoration
• Built to handle daily use in demanding environments

The Gas Roof Pump Kit – Honda P40 Electric Start is the ultimate solution for softwash contractors who want power, reliability, and convenience in one system.

This DIY Kit Includes:

• Honda P40 Softwash System with New Style P40 Pump
• Electric Start
• Waterboss Gun
• 1/2" MPT Plug (For waterboss gun)
• 1/2" FPT Socket (For end of hose)
• Remote Start/Stop system 
• P40 Installation Kit 
  • DIY 3 Valve Cyclone Proportioner, 1" SH, 1" Water, 1/2" Soap Valves
  • (3) 1" Uniseals
  • (1) 1/2" Uniseal
  • (3) Drop Tube Filters
  • (4) 1" Start Hose Barb
  • (1) 1" 90 Degree Hose Barb
  • Manual 1" 3 Way Flush Valve
  • 10ft of 1/2" Suction Hose (Soap Line)
  • 30ft of 1" Blue Suction Hose (Water + SH Suction Lines)
  • 25ft of 3/4" Bypass Hose (Solid color)

This kit does NOT include:

Hose Reel (Must be stainless manifold - we recommend 12" for 200' of 1/2", 18" for 200' of 5/8" or 300' of 1/2")

Softwash Hose (We recommend stainless steel crimps and either 1/2" or 5/8" for max flow)

For Installation, see our Gas Roof Pump Plumbing diagram for how to assemble.