\n
High Performance DOHC 12-Valve Engine<\/h4>\n
Suzuki engineers based the DF50A and DF40A engine on Suzuki’s proven in-line three-cylinder 12-valve engine. This high performance engine has a displacement of 941cm3<\/sup>\u00a0and features a DOHC powerhead\u2014the only DOHC engine used in the 36.8kW (50PS)\/29.4kW (40PS) outboard class\u2014with four valves per cylinder, and an air intake system optimized for maximum efficiency in the high rpm range.
\nWhen designing this engine, Suzuki engineers also focused on improving mechanical efficiency. Each component was analyzed and redesigned to reduce mechanical loss in order to improve efficiency. As an example, a new oil pump design makes internal oil flow more efficient, keeping moving parts better lubricated while using less energy. The combined reduction in mechanical loss throughout the engine contributes to better fuel economy.<\/p>\n <\/p>\n
Suzuki’s Lean Burn Control System<\/h4>\n
Suzuki’s Lean Burn Control System is an intelligent system that monitors engine performance and operating conditions to predict fuel needs and deliver a leaner fuel mixture to the engine. First introduced on the DF90A\/80A\/70A, and later on the DF60A, this system provides remarkable improvements in fuel economy from low speed operation up into the cruising range, which is where the engine is used a majority of the time. In-house testing shows that at medium speeds, the DF50A achieves a 23% improvement in fuel consumption than its predecessor.<\/p>\n
<\/p>\n
Multi-Point Sequential Electronic Fuel Injection<\/h4>\n
Suzuki pioneered the use of multi-point sequential electronic fuel injection in four-stroke outboards. This advanced, time-tested system gathers operating data from a series of sensors located in key areas on the engine, processes the data and calculates the optimum amount of fuel and air needed for the engine\u2014all in real time. Boaters benefit with smooth starts, maximum operating efficiency, excellent fuel economy, and reduced emissions.<\/p>\n
<\/p>\n
Maintenance Free Timing Chain<\/h4>\n
The DF50A and DF40A are the only outboards in the 36.8kW (50PS)\/ 29.4kW (40PS) outboard class to incorporate a timing chain. The chain is oil-bathed, self adjusting, and maintenance free to provide boaters with years of dependable service.<\/p>\n
<\/p>\n
Large Capacity 19A Alternator<\/h4>\n
The DF50A and DF40A are equipped with a powerful 19A alternator that generates approximately 11.5A even with the engine running at a low 1,000 rpm. Under normal circumstances that’s enough power to keep an assortment of marine electronics operating in most situations.<\/p>\n
<\/p>\n
When Only the Best is Good Enough<\/h4>\n
We are proud to be the sole supplier of marine outboard motors to the London 2012 Olympic & Paralympic Games Sailing Regatta, with the DF40A being one of the models used for this prestigious event.<\/p>\n<\/div>\n<\/div>\n
[\/vc_column_text][vc_custom_heading text=”Specification” font_container=”tag:h3|text_align:left” use_theme_fonts=”yes” css=”.vc_custom_1676729753408{margin-bottom: -70px !important;}”][vc_row_inner][vc_column_inner el_id=”1468238791521-8e8c0611-a354″][stm_tech_infos icon_size=”” css=”.vc_custom_1676729503018{margin-top: -30px !important;}”][stm_tech_info name=”BODY COLOR” value=”Pearl Nebular Black or Cool White”][stm_tech_info name=”Starting System” value=”Electric”][stm_tech_info name=”Recommended Tramsom Height (mm)” value=”L: 508″][stm_tech_info name=”Weight (kg)*” value=”104″][stm_tech_info name=”ENGINE TYPE” value=”DOHC 12-Valves”][stm_tech_info name=”FUEL DELIVERY SYSTEM” value=”Multi-Point Sequential Electronic Fuel Injection”][stm_tech_info name=”NO. OF CYLINDERS” value=”3″][stm_tech_info name=”Displacement (cm\u00b3)” value=”941″][stm_tech_info name=”BORE \u00d7 STROKE mm” value=”72.5 \u00d7 76″][stm_tech_info name=”MAXIMUM OUTPUT (kW)” value=”29.4″][stm_tech_info name=”Operation Range (rpm)” value=”5,000-6,000″][stm_tech_info name=”STEERING” value=”Remote”][stm_tech_info name=”Oil Pan Capacity (L)” value=”2.7″][stm_tech_info name=”IGNITION SYSTEM” value=”Fully-transistorized”][stm_tech_info name=”Alternator” value=”12V 19A”][stm_tech_info name=”ENGINE MOUNTING” value=”Shear Mount”][stm_tech_info name=”Trim METHOD” value=”Power Trim and Tilt”][stm_tech_info name=”Gear ratio” value=”2.27:1″][stm_tech_info name=”GEAR SHIFT” value=”F-N-R”][stm_tech_info name=”EXHAUST” value=”Through Prop Hub Exhaust”][stm_tech_info name=”DRIVE PROTECTION” value=”Rubber Hub”][\/stm_tech_infos][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row][vc_column][stm_icon_button link=”url:https%3A%2F%2Fboatstuning.com%2Fwp-content%2Fuploads%2F2016%2F07%2FSZ_40a50a60a_PIB_Web.pdf|title:See%20Broshure|target:_blank”][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"
The DF40A is the only engine in the 40 HP class to offer DOHC performance, and also the only to incorporate a maintenance-free, oil-bathed timing chain, which provides the outboard with improved durability and maintenance-free operation. With larger displacements for increased power and performance, Suzuki\u2019s Lean Control System improves fuel economy with designs that are more compact and lighter in weight than their predecessors. The new DF40A engines also include the Suzuki Troll Mode System. The Boating Writers of America presented Suzuki Marine with the NMMA Innovation Award for the DF40A\/DF50A, during the 2011 Miami Boat Show.<\/p>\n","protected":false},"featured_media":3755,"comment_status":"open","ping_status":"closed","template":"","meta":{"_uf_show_specific_survey":0,"_uf_disable_surveys":false},"product_brand":[],"product_cat":[178,179],"product_tag":[188,214,220],"class_list":["post-3952","product","type-product","status-publish","has-post-thumbnail","product_cat-outboard-motors-ro","product_cat-suzuki-ro","product_tag-40cp-ro","product_tag-outboard-ro","product_tag-suzuki-ro","first","instock","sold-individually","shipping-taxable","purchasable","product-type-variable","has-default-attributes"],"yoast_head":"\n
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