This is the 1.40 cu in (23cc) 2-cycle Gasoline Engine with Pull Start for the DuraTrax Firehammer 1/5 scale buggy. **Clutch Housing Shown in Photo is no Longer Included.** FEATURES: Walbro carburetor with primer bulb and foam air filter Aluminum crankcase with Black plastic pull start cover and cylinder head shroud Uses unleaded gasoline and 2-cycle oil Kill switch for added safety NGK CMR7H or CHAMPION RZ7C spark plug, available at hardware stores and small engine shops. Three year warranty INCLUDES: One 1.40 cu in (23cc) gasoline engine for the DuraTrax Firehammer buggy with foam air filter, plug wrench and illustrated parts list REQUIRES: 2-cycle oil, FJIP9911 SPECS: Length: 6½" (165mm) from pull starter to clutch assembly Width: 7¾" (197mm) from muffler to air filter Height: 7¾" (197mm) including spark plug Weight: 4.69lbs (2130g) Gasoline/oil mix: 40:1 Needle Settings: 1.5 turns out from fully closed on BOTH High Speed and Low Speed. COMMENTS: No instruction manual provided, refer to Firehammer instruction manual. Figures such as horsepower, max RPM and such are not provided. jxs 9/27/04 ir/jxs updt lmm 3/26/09