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                 This is the Ofna Jammin' .28JPX Engine.

FEATURES: Special slide valve carburetor has high heat nylon body to counteract
            heat from the engine that could cause the fuel to boil before
            entering the engine
          ABC construction (Aluminum piston with a Chromed Brass cylinder)
          Red anodized aluminum head
          Engine delivers excellent bottom end power with great top end run out
          Includes Turbo Plug type head

INCLUDES: One Jammin .28JPX Engine
          One silicone rubber insert for Force and Novarossi type manifolds
          One running and parts information sheets
          One Jammin products sticker

SPECS:    RPM: 36000
          Bore: 19.00mm
          Cubic capacity: .28 cu in (4.50cc)
          Stroke: 16.8
          HP: 3.5
          Weight: 12.34oz (350g)
          Length: 64mm (2.51") front of front bearing to back of pull start
          Width:  21mm  (.82") width between mounting holes same side
                  38mm (1.49")  width between mounting holes opposite side
                  32mm (1.25")  crankcase width
          Height: 112mm (4.4") from bottom of crankcase to top of cylinder head
            (contact Ofna for more technical information).
          Needle settings: factory setting equals 6½ turns out in total

REQUIRES: Ofna recommends using 20% O'Donnell fuel
          Muffler or tuned pipe depending on application
          Turbo glow plug
          Some notes on Slide Valve and Rotary Carburetors:
            Rotary Carbs offer a larger response in the middle of the power
            band. This works well for off-road applications when throttle
            response must be varied.
          Slide Valve Carbs provide greater response at the beginning and end
          of the power band. This works well for on-road and racing
          applications for fast take-offs and high speed.

                                                                    tlw 6/29/07
                                                                         ir/jxs



– If you need more information, use these Ofna resources –

E-mail: help@ofna.com
Web Site: http://www.ofna.com/
Phone: 949-586-2910


 
Postal Address:
Ofna
7 VANDERBILT
IRVINE, CA 92618  








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