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Operator's Manual
Original Operating Instructions
Viper® 173cc
4-Cycle Engine
GAS/OIL
RATIO
Product #: 186000
50:1
P/N: 14506
ECN: 10158
REV2: 08/27/13
Get parts online at
© 2014 Ardisam, Inc.
www.ardisam.com
All Rights Reserved

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Summary of Contents for Viper 18600 173CC

  • Page 1 Operator's Manual Original Operating Instructions Viper® 173cc 4-Cycle Engine GAS/OIL RATIO Product #: 186000 50:1 P/N: 14506 ECN: 10158 REV2: 08/27/13 Get parts online at © 2014 Ardisam, Inc. www.ardisam.com All Rights Reserved...
  • Page 2: Table Of Contents

    Warranty ..............................................19-21 FEDERAL EMISSION INFORMATION Viper® warrants to the retail purchaser, that this small, off-road engine was designed, built and equipped to conform at the time of initial sale to all applicable regulations of the U.S. Environmental Protection Agency (EPA).
  • Page 3: Warnings And Safety Precautions

    • Read and follow all safety instructions. CAUTION • Maintain the engine according to directions and schedule included in this Viper® operator’s manual. CAUTION INDICATES YOU CAN BE HURT OR YOUR • Ensure that anyone who uses the engine is familiar with and EQUIPMENT DAMAGED IF THE SAFETY INSTRUC- understands all controls and safety precautions.
  • Page 4 Operator's Manual Viper® 173cc 4-Cycle Engine ENGINE SAFETY PRECAUTIONS WARNING Preventing Carbon Monoxide Poisoning ENGINES GIVE OFF CARBON MONOXIDE, AN ODOR- • Never try to ventilate engine exhaust indoors. Carbon LESS, COLORLESS, POISONOUS GAS. CARBON MON- monoxide can reach dangerous levels very quickly.
  • Page 5 • Never touch parts of the engine that become hot after • Use only original equipment parts from Viper®, including all operation. nuts and bolts. • Always keep materials and debris away from muffler guard and other hot parts of the engine to avoid fires.
  • Page 6: Specifications

    Operator's Manual Viper® 173cc 4-Cycle Engine SAFETY SYMBOLS The following symbols may be used on your engine to alert you to potential hazards or to give you guidance in operating your engine. Look over them and understand their meanings before operating your engine.
  • Page 7: Features

    Operator’s Manual Viper® 173cc 4-Cycle Engine FEATURES WARNING ENGINE COMPONENTS DO NOT REFUEL WHILE SMOKING, NEAR OPEN FLAME, OR OTHER POTENTIAL HAZARDS. MODEL 186000 173CC VERTICAL SHAFT FUEL IS HIGHLY FLAMMABLE AND MUST BE HANDLED This is a 4-cycle air cooled engine. The 173cc engine utilizes a vertical WITH CARE.
  • Page 8: Operation

    Operator's Manual Viper® 173cc 4-Cycle Engine OPERATION WARNING PRE-OPERATION INSPECTION IMPROPERLY MAINTAINING THIS ENGINE, OR FAIL- 1. Check that the engine is equipped with the proper amount URE TO CORRECT A PROBLEM BEFORE OPERATION, and type of oil. To determine the most appropriate type of CAN CAUSE A MALFUNCTION WHICH MAY RESULT oil to use, see the chart below.
  • Page 9 10% ethanol. Ethanol additives to fuel are known to cause lower level deterioration of fuel lines and other fuel components. Viper® recommends the addition of fuel stabilizer to protect your engine’s fuel system and prolong the life of your engine. DO FIGURE 1 NOT mix oil with fuel.
  • Page 10 Operator's Manual Viper® 173cc 4-Cycle Engine STARTING AND STOPPING ENGINE WARNING NOTE: Operating engine on angles greater than 25 degrees CARBON MONOXIDE GAS IS TOXIC. INHALATION CAN will cause the engine to lose lubrication and seize. CAUSE UNCONSCIOUSNESS AND DEATH.
  • Page 11: Maintenance And Storage

    Operator’s Manual Viper® 173cc 4-Cycle Engine MAINTENANCE AND STORAGE WARNING Please read the maintenance schedule, and observe these IMPROPER MAINTENANCE, OR FAILURE TO CORRECT recommended care operating intervals to extend the life of A PROBLEM BEFORE OPERATION CAN CAUSE A MAL- your engine.
  • Page 12 DAMAGE IS NOT COVERED UNDER WARRANTY. more information. Oil Maintenance After the first five hours of operating a new Viper® Engine the oil should be replaced, and every 50 hours of operating time thereafter. The oil should be changed every 25 hours if used under severe conditions, such as in high temperatures or under heavy loads, otherwise changed weekly.
  • Page 13 Refer to maintenance schedule for suggestions on when to service your air filter. Washing filter is not recommended. When dirty, NEVER RUN ENGINE WITHOUT AIR FILTER PROPERLY replace filter (Viper P/N 10905). INSTALLED. ADDED WEAR AND ENGINE FAILURE MAY OCCUR IF AIR FILTER IS NOT INSTALLED ON ENGINE.
  • Page 14 Operator's Manual Viper® 173cc 4-Cycle Engine CARBURETOR WARNING • Never tamper with factory setting of the carburetor. FAILURE TO FOLLOW MAINTENANCE INFORMATION • Contact your service provider or Viper® if adjustment is needed. CAN CAUSE DEATH OR SERIOUS INJURY. FUEL FILTER DO NOT REMOVE FUEL WHILE SMOKING, NEAR OPEN Cleaning Or Replacing Fuel Filter FLAME, OR WHEN IN PROXIMITY TO OTHER POTEN- TIAL HAZARDS.
  • Page 15: Troubleshooting And Repair

    TROUBLESHOOTING AND REPAIR At Viper® we build quality and durability into the design of our products; but no amount of careful design by us, and careful maintenance by you, can guarantee a repair-free life for your Viper® Engine. Most repairs will be minor, and easily fixed by following the suggestions in the troubleshooting guide in this section.
  • Page 16: Parts Breakdown

    Operator's Manual Viper® 173cc 4-Cycle Engine PARTS BREAKDOWN 173cc ENGINE MAIN PARTS EXPLOSION 13,27 5,10 12,22 12,22 11,12,21 6,18 11,12,21 11,12 11,12 3,10 1,10 10,20 2,7,10 2,10,12 Check for parts online at www.ardisam.com or call 800-345-6007 M-F 8-5...
  • Page 17 Operator’s Manual Viper® 173cc 4-Cycle Engine 173CC ENGINE MAIN PARTS LIST PART DESCRIPTION QTY. 11211 KIT VALVE COVER 11228 KIT THROTTLE REPLACEMENT 11989 KIT MUFFLER 11216 KIT THROTTLE CONTROL SPRINGS 11217 KIT STARTER CUP AND FAN 11218 KIT BLOWER HOUSING...
  • Page 18: High Altitude Operation

    3. Engine operation is not recommended in altitudes greater than 8,000 feet. Doing so will negatively affect engine performance. 4. For more information on obtaining an altitude kit, see an authorized Viper dealer or contact customer service at 800-345-6007 Mondays through Fridays from 8 a.m. to 5 p.m. CST, or send an email to info@ardisam.com.
  • Page 19: Warranty

    (SEE EXPLANATION OF EMISSIONS CONTROL WARRANTY STATEMENT FOR DETAILS) Ardisam warrants the Viper® engine(s) under a two-year limited emissions control warranty to be free from defects in the materials or workmanship or both for the service life of the product not to exceed twenty-four consecutive months from the date of purchase for consumer applications.
  • Page 20 Operator's Manual Viper® 173cc 4-Cycle Engine COMBINED EXHAUST AND EVAPORATIVE EMISSIONS CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS DEFECTS WARRANTY REQUIREMENTS: The California Air Resources Board, the United States Environ- (A) The warranty period begins on the date the engine/equip- mental Protection Agency and Ardisam, Inc.
  • Page 21: Warranty

    Operator’s Manual Viper® 173cc 4-Cycle Engine (7) Ardisam is liable for damages to other engine/equipment (6) Catalyst or Thermal Reactor System components proximately caused by a failure under warranty (i) Catalytic converter. of any warranted part. (ii) Thermal reactor. (8) Throughout the emissions warranty period defined in sub- (iii) Exhaust manifold.
  • Page 22 Operator's Manual Viper® 173cc 4-Cycle Engine NOTES Check for parts online at www.ardisam.com or call 800-345-6007 M-F 8-5...
  • Page 23 Operator’s Manual Viper® 173cc 4-Cycle Engine NOTES Check for parts online at www.ardisam.com or call 800-345-6007 M-F 8-5...
  • Page 24 Viper® Engines, Division of Ardisam, Inc. 1160 8th Avenue, PO Box 666 Cumberland, WI 54829 800-345-6007 | Fax 715-822-2223 E-mail: info@ardisam.com All weights, specifications and features are approximate and are subject to change without notice. Due to continuous product improvements, product images may not be exact. Items used for props not included. Some assembly may be required.

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