Nitrotec R21 Engine User Manual
Contents
1. the idle screw clockwise will speed up the idle and vice versa The carburetor may be rotated to fit your application by loosening the cap screw on the side of the crankcase below it Although preset at the factory changes to these settings will be needed for your model LOW SPEED NEEDLE IDLE SPEED SCREW Starting settings using a 7mm insert High Speed Needle 4 turns out counterclockwise from closed Low Speed Needle 3 turns out counterclockwise from closed Do not over tighten the needles when checking the adjustment Stop turning clockwise closing immediately when you feel resistance in the needle and begin turning the needles counterclockwise open counting the number of turns from closed Break In Since this is a racing engine manufactured by one of the leading engine manufactures in the world you must follow the break in directions included with these instructions Take your time and you will be rewarded with a great performing engine that will last for a long time Starting Your Engine for the First Time The first start of your engine is the most critical time of the engine s life dictating how well it will perform Turn on your radio and confirm the throttle is closed Attach a glow igniter to the glow plug Place your finger over the exhaust and turn the engine over with the starter for 1 2 seconds to prime the fuel line This should only be necessary when the engine is cold do not touch the exhaust pipe when th2. Nitrotec R21 3 5cc Racing Engine LOSR2808 LOSR2809 LOSR2810 LOSR2811 LOSR2812 LOSR2813 LOSR2814 LOSR2815 LOSR2816 LOSR2817 LOSR2818 LOSR2819 LOSR2822 LOSR2823 LOSR2824 LOSR2825 LOSR2828 LOSR2829 LOSR2830 LOSR2831 LOSR2836 Optional LOSR2825 LOSR2823 Parts List LOSR2836 LOSR2828 Dei R21 Connecting Rod R21 Crankcase R21 Piston amp Sleeve Set R21 Piston Sleeve Connecting Rod Assm R21 Crankshaft R21 Backplate R21 Front Ball Bearing w Seal R21 Rear Ball Bearing R21 Head Insert R21 Cooling Head Off Road R21 Head Shims 5 1mm R21 Head Shims 5 3mm R21 Carburetor R21 Carburetor Restrictor 6mm R21 Carburetor Restrictor 6 5mm R21 Carburetor Restrictor 7mm R21 Head Screws R21 Backplate Screws R21 Backplate O Rings R21 Carburetor Lock Set 6 Turbo Glow Plug C6TGC LOSR2817 LOSR2819 LOSR2819 LOSR2816 LOSR2818 LOSR2820 LOSR2810 LOSR2824 LOSR2811 LOSR2808 LOSR2809 LOSR2815 NENT 4ST Se E a4 848 au 2010 Losi a Division of Horizon Hobby Inc Printed 03 10 27944 Nitrotec R21 3 5cc Racing Engine LOSR2800 Safety Precautions This is a sophisticated hobby Product and not a toy It must be operated with caution and common sense and requires some basic mechanical ability Failure to operate this Product in a safe and responsible manner could result in injury or damage to the Product or other property This Product is not intended fo
3. OSS IN ANY WAY CONNECTED WITH THE PRODUCT WHETHER SUCH CLAIM IS BASED IN CONTRACT WARRANTY NEGLIGENCE OR STRICT LIABILITY Further in no event shall the liability of Horizon exceed the individual price of the Product on which liability is asserted As Horizon has no control over use setup final assembly modification or misuse no liability shall be assumed nor accepted for any resulting damage or injury By the act of use setup or assembly the user accepts all resulting liability If you as the Purchaser or user are not prepared to accept the liability associated with the use of this Product you are advised to return this Product immediately in new and unused condition to the place of purchase Law These Terms are governed by Illinois law without regard to conflict of law principals Warranty Services Questions Assistance and Repairs Your local hobby store and or place of purchase cannot provide warranty support or repair Once assembly setup or use of the Product has been started you must contact Horizon directly This will enable Horizon to better answer your questions and service you in the event that you may need any assistance For questions or assistance please direct your email to productsupport horizonhobby com or call 877 504 0233 toll free to speak to a Product Support representative Inspection or Repairs If this Product needs to be inspected or repaired please call for a Return Merchandise Authorization RMA Pack t
4. This warranty covers only those Products purchased from an authorized Horizon dealer Third party transactions are not covered by this warranty Proof of purchase is required for warranty claims b Limitations HORIZON MAKES NO WARRANTY OR REPRESENTATION EXPRESS OR IMPLIED ABOUT NON INFRINGEMENT MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCT THE PURCHASER ACKNOWLEDGES THAT THEY ALONE HAVE DETERMINED THAT THE PRODUCT WILL SUITABLY MEET THE REQUIREMENTS OF THE PURCHASER S INTENDED USE c Purchaser Remedy Horizon s sole obligation hereunder shall be that Horizon will at its option i repair or ii replace any Product determined by Horizon to be defective In the event of a defect these are the Purchaser s exclusive remedies Horizon reserves the right to inspect any and all equipment involved in a warranty claim Repair or replacement decisions are at the sole discretion of Horizon This warranty does not cover cosmetic damage or damage due to acts of God accident misuse abuse negligence commercial use or modification of or to any part of the Product This warranty does not cover damage due to im proper installation operation maintenance or attempted repair by anyone other than Horizon Return of any goods by Purchaser must be approved in writing by Horizon before shipment Damage Limits HORIZON SHALL NOT BE LIABLE FOR SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL L
5. e engine is warm Should the engine become difficult to turn over the engine may be flooded hydro locked Excess fuel between the cylinder head and piston will not allow the piston to travel through its full range of compression effectively locking up the engine Should this occur immediately remove the glow igniter and remove the glow plug Turn the model upside down and rotate the flywheel to clear out the fuel or put a rag over the top of the head and turn over on the starter You may need to blip the throttle on the transmitter applying throttle on off while trying to start the engine as new engines are more difficult to start due to the tight piston cylinder fit Note Pre heating the cylinder of the engine with a heat gun helps initial starting easier Increasing the idle speed during break in will help keep the engine running while the needle settings are rich Warranty and Repair Policy Exclusive Warranty Horizon Hobby Inc Horizon warranties that the Products purchased the Product will be free from defects in materials and workmanship at the date of purchase by the Purchaser Limited Warranty Horizon reserves the right to change or modify this warranty without notice and disclaims all other warranties express or implied a This warranty is limited to the original Purchaser Purchaser and is not transferable REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE REMEDY OF THE PURCHASER
6. etail purchase cost By submitting the item for repair you are agreeing to payment of the repair without notification Repair estimates are available upon request You must include this request with your repair Non warranty repair estimates will be billed a minimum of 1 hour of labor In addition you will be billed for return freight Please advise us of your preferred method of payment Horizon accepts money orders and cashiers checks as well as Visa MasterCard American Express and Discover cards If you choose to pay by credit card please include your credit card number and expiration date Any repair left unpaid or unclaimed after 90 days will be considered abandoned and will be disposed of accordingly Please note non warranty repair is only available on electronics and model engines United States European Union Electronics and engines requiring inspection or repair should Electronics and engines requiring inspection or repair should be shipped to the following address be shipped to one of the following Horizon Service Center Horizon Hobby Limited 4105 Fieldstone Road Units 1 4 Ployters Rd Champaign Illinois 61822 Staple Tye Harlow USA Essex CM18 7NS United Kingdom All other Products requiring warranty inspection or repair should be shipped to the following address Please call 44 0 1279 641 097 or email sales horizonhobby co uk for any warranty questions Horizon Product Support Horizon Technischer Service 4105 Fieldsto
7. he Product securely using a shipping carton Please note that original boxes may be included but are not designed to withstand the rigors of shipping without additional protection Ship via a carrier that provides tracking and insurance for lost or damaged parcels as Horizon is not responsible for merchandise until it arrives and is accepted at our facility A Service Repair Request is available at www horizonhobby com on the Support tab If you do not have internet access please include a letter with your complete name street address email address and phone number where you can be reached during business days your RMA number a list of the included items method of payment for any non warranty expenses and a brief summary of the problem Your original sales receipt must also be included for warranty consideration Be sure your name address and RMA number are clearly written on the outside of the shipping carton Warranty Inspection and Repairs To receive warranty service you must include your original sales receipt verifying the proof of purchase date Provided warranty conditions have been met your Product will be repaired or replaced free of charge Repair or replacement decisions are at the sole discretion of Horizon Hobby Non Warranty Repairs Should your repair not be covered by warranty the repair will be completed and payment will be required without notification or estimate of the expense unless the expense exceeds 50 of the r
8. ne Road Hamburger Str 10 Champaign Illinois 61822 25335 Elmshorn Usa Germany Please call 49 4121 46199 66 or email service horizonhobby de for any warranty questions Horizon Hobby SAS 14 Rue Gustave Eiffel Zone d activit du r veil matin 91230 Montgeron France Please call 33 0 1 30 47 44 70
9. r use by children with out direct adult supervision The Product manual contains instructions for safety operation and maintenance It is essential to read and follow all the instructions and warnings in the manual prior to assembly setup or use in order to operate correctly and avoid damage or injury Using the Proper Fuel and Glow Plug Using the proper fuel and glow plug is critical in order to achieve maximum performance and reliability You must use fuel glow plugs and air filters specifically designed for model car truck buggy applications Never use any type of model airplane glow fuel Use of model airplane fuel can damage your engine and immediately void any warranty We recommend using Nitrotane fuel Nitrotane fuels are vigorously tested researched and formulated to deliver superior power and engine protection An LOSR2836 6 turbo glow plug has been included and is ideal for this engine This plug has been designed to deliver both performance and longevity All car engines must use a properly oiled air filter to keep dirt out of the engine Any dirt that enters the carburetor can immediately destroy your engine Carburetor Adjustments Nitrotec engines come equipped with a precision slide valve carburetor Familiarize yourself with the various adjustments of the carb Turning the low or high speed needle valves counterclockwise will richen the mixture Turn ing the needle valves clockwise will lean the mixture Turning
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