When you need a reliable gas engine along with a pump tooled for multiple applications, select this CDS - John Blue DP-139 & Honda GX 240 Electric Start Engine Assembly. The pump is rated with a maximum pressure of 580 PSI and an upper flow rate of 13.9 GPM, which means it's ideal for use in agriculture, pest control as well as lawn & landscape applications. Additionally, the 8.0 HP Honda OHV commercial-grade engine gives plenty of power for long-term use.

The DP-139 is a 3 Diaphragm Pump, 1-1/4" Inlet, 1/2" Outlet. Pump has crankshaft flange on one side and 1-3/8" male spline shaft on the opposite side. With the GX240, you're looking at one of the best engines in the business. More power. Quieter performance. Lower fuel consumption. Lower emissions. Better features. Exceptional performance. Honda's GX series lives up to the legend, and then some.

GXDP139

• Max flow: 13.9 gpm
• Max pressure: 580 psi
• Includes SC-1132-2 pressure regulator and DP-321006 gearbox with 1" hollow shaft for mounting on 8 to 9 hp gas engines
• Port sizes: 1-1/4" HB inlet, (2) 1/2" HB outlet, 3/4" HB bypass
• Pump shaft rotation: CW and CCW
• Diaphragms: 3, semi-hydraulic, Desmopan® standard
• Housing: Anodized aluminum
• Max fluid temperature: 140°F
• Weight: 48 lbs Honda GX240 Engine:
• Engine type: Air-cooled 4-stroke OHV
• Starting sytem: Electric and recoil starter
• Shaft: 1" solid keyed
• Bore x stroke: 73 x 58 mm
• Displacement: 270 cm3
• Net power output: 7.9 HP (5.9 kW) @ 3600 rpm 
• Net torque: 13.5 lb-ft (18.3 Nm) @ 2500 rpm
• PTO shaft rotation: Counterclockwise from PTO shaft side
• Compression ratio: 8.5 : 1
• Lamp/Charge coil options: 25W, 50W / 1A, 3A, 10A, 18A
• Carburetor: Butterfly float type
• Ignition system: Digital CDI with variable ignition timing
• Lubrication system: Splash
• Governor system: Centrifugal mass type
• Air cleaner: Dual element
• Oil capacity: 1.16 US qt. (1.1 L)
• Fuel tank capacity: 5.6 US qts (5.3 liters)
• Fuel: Unleaded 86 octane or higher
• Dry weight 55 lbs (25 kg)
• Dimensions: 15.0 in long x 16.9 in wide x 16.6 in high (380 x 429 x 422 mm)
• Warranty: 3 year commercial warranty (limited to manufacturer defects)