Operator’s Manual Read these instructions carefully and make sure 450 you understand them before using the 450. Manual del operador Lea cuidadosamente estas instrucciones y asegúrese de que las comprende bien antes de usar el 450. Manuel d’utilisation Veuillez lire attentivement ces instructions et assurez-vous de bien les comprendre avant d’utiliser la machine modèle 450.
UNPACKING CONTENTS Content Your 450 saw has been shipped from the factory thoroughly inspected. Only minimal assembly is required to start using the saw. Remove the saw from the container using proper lifting techniques. Discard or recycle the packing material per your regional laws.
INTRODUCTION The 450 is designed as a residential and light commercial Ultra Early Entry concrete saw. The patented Soff-Cut Ultra Early Entry dry cutting system controls random cracking of concrete through the early timing of the saw cutting usually within one to two hours after finishing process is completed.
REGISTER THE PRODUCT Please register your new 450 with Husqvarna Construction Products by mailing in the registration card that came with the machine or you can register on the internet site www.husqvarnawarranty.com Registration will allow us to contact in case of any critical updates or recalls on this machine. Warranty registration has also been found to be helpful in tracing stolen equipment.
SAFETY WARNINGS SAW SAFETY WARNING • Do not leave saw unattended while the engine is running. Failure to comply with the following warnings could result in serious bodily injury or death! • Do not alter the saw. Any alteration or modification is misuse and may result in a dangerous condition. • All safety guards must be in place before starting the engine. PERSONAL SAFETY • Read and understand instructions before operating saw.
EXCEL SERIES BLADES The Excel Series of diamond blades have been designed specifically for the Soff-Cut Ultra Early Entry dry cutting system of green concrete. These specialty blades are designed to increase speed and life while cutting a wide range of aggregates.
WHAT IS WHAT Model number and serial number G F E D B C A F What is what? A. B. C. D. E. F. G. H. I. J. K. L. M. N. O. P. Q.
OPERATING INSTRUCTIONS Handle bar Blade release lever Hood To start the engine, turn the fuel valve (C) on by the carburetor on the side of the engine. Raise the saw by pushing down on the handle bar (Q) with both hands to the full locked position. Push the engine kill switch (I) to the “ON” or “1” position. Push the engine throttle control (N) 1/3 of the way. Close the engine choke by pulling the engine choke knob (F). The closed choke position enriches the fuel mixture for starting a cold engine.
FUEL HANDLING OIL HANDLING WARNING NOTICE Used oil is a hazardous waste product. Dispose of used oil properly. Do not discard with household waste. Check with your local authorities, service center, or dealer for safe disposal/recycling facility. Taking the following precautions will lessen the risk of injury and property damage: - Use extreme care in handling gasoline. It is extremely flammable and the vapors are explosive. - Extinguish all cigarettes, cigars, pipes, and other sources of ignition.
MAINTENANCE Engine Oil Checking, Adding and Changing Oil Check the engine oil level (B) daily with saw fully lowered and the engine level. See the enclosed Robin manual for more details. Use SAE 10W-30 viscosity detergent automotive type with API service class SE or higher grade oil. Note: Engine holds approximately 0.6 quart (0.6 liter) when changing. Changing the Oil Change oil after the first 5 to 8 hours of use. Thereafter every 50 hours.
SAWING CONTRACTION JOINTS As concrete hydrates or cures and begins to set, it develops internal stresses which may cause random cracks. Random cracks cast doubt on the quality and workmanship of the concrete. Contraction joints are cut in concrete to relieve these stresses before they seek their own relief in the form of random crack.
MAXIMIZING THE SOFF-CUT SYSTEM “ The timing of concrete operations - especially finishing and jointing - is critical”, states a quote from the foreword of the American Concrete Institute (ACI) 302.1 R-96. It goes on to say that “Failure to address this issue can contribute to undesirable characteristics in the wearing surface as cracking...” (It mentions other problems). The patented Soff-Cut Ultra Early Entry system has revolutionized the method used to control random cracking.
TROUBLESHOOTING SAW IS SPALLING AND RAVELLING CUT - Check to see if the diamond blade is worn out, glazed, warped or damaged. - Insure skid plate moves freely up and down the entire shaft length without contacting the diamond blade. - Check skid plate for excessive wear or gap around the diamond blade. - Check skid plate for tension or loose mounts. Skid plates are preset at the factory. - Check bottom of skid plate for metal burrs or irregularities. - Insure skid plate is not twisted or bent.
TECHNICAL SPECIFICATIONS Weight and Dimensions 450 Weight – dry Weight with gasoline and oil full 132 lbs 139 lbs 60 kg 63 kg Length Width Height 34 inch 19 inch 21 inch 864 mm 483 mm 533 mm Blade Material cut Blade type Blade rotation Blade shaft speed Cutting depth Cutting distance from wall Green concrete only 8.
WARRANTY HusqvarnA Equipment Warranty New 450 sold by Husqvarna Construction Products are warranted to be free from manufacturing defects in normal service for a period of six (6) months for labor and up to one (1) year on parts from date of purchase by the original consumer purchaser or date of introduction into rental company fleet.
505 41 78-08 2009-13 Printed In U.S.A.
