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Ski-Doo Summit x 670 1998 Shop Manual
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Ski-Doo Summit x 670 1998 Shop Manual

Ski-Doo Summit x 670 1998 Shop Manual

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Summary of Contents for Ski-Doo Summit x 670 1998

  • Page 2 ® 1998 Shop Manual Supplement SUMMIT x 670 USE IN CONJUNCTION WITH THE SKI-DOO SHOP MANUAL P/N 484 0682 00...
  • Page 3 TABLE OF CONTENTS Legal deposit: National Library of Quebec trimester 1997 National Library of Canada1997 All rights reserved. No parts of this manual may be reproduced in any form without the prior written permission of Bombardier Inc. © Bombardier Inc. 1997 Technical Publications Bombardier Inc.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS SECTION PAGE SAFETY NOTICE ............................INTRODUCTION Abbreviations list ................. Serial numbers ................LUBRICATION ....................AND MAINTENANCE TOOLS ....................01-1 TROUBLESHOOTING ....................02-1 ENGINE Table of contents................. 699 Engine ................. Leak test and engine dimension measurement ......CDI system (220-watt magneto system)........03-1 Oil injection system ..............
  • Page 5 TABLE OF CONTENTS SECTION PAGE STEERING/ Table of contents ................ FRONT SUSPENSION Steering system ................Suspension and ski system ............BODY/FRAME Table of contents ................ Body .................... Frame ..................TECHNICAL DATA Engine ..................07-1 Vehicle ..................07-2 Technical data legends..............07-3 WIRING DIAGRAM Wiring diagram legend ..............
  • Page 6 SAFETY NOTICE SAFETY NOTICE This manual has been prepared as a guide to correctly service and repair the 1998 Ski-Doo Summit x 670. See model list on next page. This edition was primarily published to be used by snowmobile mechanics who are already familiar with all service procedures relating to Bombardier made snowmobiles.
  • Page 7 INTRODUCTION INTRODUCTION The 1998 Summit x 670 comprises 2 new sys- SERIAL NUMBERS tems compare with Summit 670. The 1998 Shop Manual Supplement describes how these sys- Each Vehicle has its Particular Vehicle tems operate as well as the procedures to test Serial Number them.
  • Page 8 INTRODUCTION Liquid Cooled Engines A00C1QA 1. Engine serial number CAUTION Most components of those vehicles are built with parts dimensioned in the metric sys- tem. Most fasteners are metric and must not be replaced by customary fasteners or vice versa. Mismatched or incorrect fasteners could cause damage to the vehicle or possi- ble personal injury.

  • Page 9: Tools

    Section 01 TOOLS TOOLS A00B4HA TYPICAL — ADAPTOR (P/N 529 0338 00) Fluke multimeter Choke nut tool Programmer (P/N 529 0220 00) (P/N 529 0322 00) (P/N 529 0355 02) A01B554 APPLICATION A01B5B4 All vehicles equipped with a APPLICATION choke. All models equipped with a DESS.

  • Page 10: Troubleshooting

    Section 02 TROUBLESHOOTING TROUBLESHOOTING DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM If the DPM seems to be defective, unplug both solenoids while the engine is running. The carbu- ration is now identical to that of carburetors with- out a DPM provided, of course, that all pipe fittings are tight and that solenoids are in good condition.

  • Page 11: Electrical System

    Section 03 ELECTRICAL SYSTEM ELECTRICAL SYSTEM Lithium grease Loctite Loctite 242 Loctite 648 To main harness A03C1ZS PARTS FLAT RATE 03-1...
  • Page 12 Section 03 ELECTRICAL SYSTEM 220-WATT MAGNETO SYSTEM TESTING PROCEDURE Magneto THEORY AND OPERATION IGNITION GENERATOR COIL Charging System Resistance Testing Charging system is identical to Summit 670. Re- Disconnect 3-05 housing. fer to 1998 Shop Manual volume 2 . Refer to the electrical diagram at the end of this The 220-watt magneto no.

  • Page 13: Oil Injection System

    Section 04 OIL INJECTION SYSTEM OIL INJECTION SYSTEM Loctite 242 Molykote 111 Loctite 242 A03C2NS PARTS FLAT RATE 04-1...
  • Page 14 Section 04 OIL INJECTION SYSTEM OIL INJECTION PUMP Oil injection pump no. 1 is located above carbure- tors. Maintenance, adjustment and inspection re- main the same has Summit 670. Refer to section OIL INJECTION PUMP 04-06 of 1998 Shop Manual vol. 2. VOLUME 2 04-2...

  • Page 15: Dess System

    Section 05 DESS SYSTEM DESS SYSTEM (DIGITALLY ENCODED SECURITY SYSTEM) COMPONENT LOCATION A03E1WA MPEM 1. Compensation solenoid (3-11 housing) 2. Enrichment solenoid (3-10 housing) 3. Trigger coil (2-02 housing) 4. Ignition coil (3-01 housing) 5. Magneto (3-05 housing) 6. DESS switch (6-03 housing) A03A0IB 7.
  • Page 16 Section 05 DESS SYSTEM DESS Switch Check using a multimeter by connecting probes to BLACK/GREEN and BLACK/WHITE wires. The multimeter should indicate a closed circuit (0.L MΩ in operating position and a open circuit (0 ) in off Ω position. A30E0OA TYPICAL —...
  • Page 17 Section 05 DESS SYSTEM IGNITION SYSTEM TESTING (Summit x 670) RESISTANCE Ω VOLTAGE V MULTIMETER TEST TO BE WIRE PART PROBE NOTE VALUE MULTIMETER Value MULTIMETER PERFORMED COLOR CONNECTION (Ohms) SCALE (Volts) SCALE Stop switch 3-05C-F Running BK and No stop switch must be 00.0 —...
  • Page 18 Section 05 DESS SYSTEM LIGHTING SYSTEM TESTING (Summit x 670) RESISTANCE Ω VOLTAGE V MULTIMETER TEST TO BE WIRE PART PROBE NOTE VALUE MULTIMETER VALUE MULTIMETER PERFORMED COLOR CONNECTION (Ohms) SCALE (Volts) SCALE Lighting 2-01B-F YL and 00.0 generator Power 00.0 - 00.6 3.0 - 7.0 00.0...

  • Page 19: Digital Performance Management (Dpm) System

    Section 06 DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM Hood Vent Engine Fuel pump A03C2MS PARTS FLAT RATE 06-1...
  • Page 20 Section 06 DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM COMPONENT LOCATION A03C2GA 1. MPEM module 2. Manifold 3. Engine temperature DPM sensor 4. Air temperature DPM sensor THEORY AND OPERATION PURPOSE Calibrate the air/fuel mixture in order to optimize the engine output while reducing fuel consump- tion.
  • Page 21 Section 06 DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM OVERALL SYSTEM OPERATION A06I0PS 3 CYLINDER ENGINE SHOWN — SAME PRINCIPLE FOR 2 CYLINDER ENGINE 1. MPEM module 2. Carburetor bowls 3. Distribution gallery (upper tube) 06-3...
  • Page 22 Section 06 DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM Introduction The engine is being started using the manual starter. The Digital Performance Management (DPM) sys- tem increases pressure within all 2 carburetor bowls thus the air/fuel mixture is enriched. This is what we call the enrichment mode. NOTE: On Summit x 670, use primer to ease cold starting.
  • Page 23 Section 06 DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM Enrichment Mode (starting) A06I0QS TYPICAL Turning the ignition key to the ON position will not energize DPM system. The DPM system is energized only. Once the engine turns over 250 RPM. The DPM system then comes on by reading the engine temperature through the sensor located on the cylinder head.
  • Page 24 Section 06 DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM CARBURETOR ACTIVE CALIBRATED JET CARBURETOR ENRICHMENT AIR JET SOLENOID COMPENSATION FROM AIR PUMP SOLENOID REAR VIEW A03I0LS This enrichment mode of the air/fuel mixture takes place at start-up and during engine warm-up, and it depends on engine temperature.
  • Page 25 Section 06 DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM Compensation Mode A06I0US 1. Air jet 2. Needle jet air inlet Three conditions must be met for the compensation mode to operate: 1. Engine must rev over 3000 RPM. 2. Air temperature must exceed -20°C (-4°F). 3.
  • Page 26 Section 06 DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM FROM CARBURETOR (VENTURI) ACTIVE CALIBRATED JET FROM CARBURETOR (VENTURI) ENRICHMENT AIR JET SOLENOID COMPENSATION FROM AIR FROM CARBURETOR SOLENOID REAR VIEW PUMP (VENTURI) A03I0MS The compensation ratio will depend on the air temperature and the atmospheric pressure. The higher the air temperature, the leaner the air/ fuel mixture.
  • Page 27 Section 06 DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM AIR PUMP OPERATION The DPM manifold no. 2 consists of 2 tubes. De- pending on the mode, the upper tube (distribution gallery) distributes pump pressure or vacuum to each bowl through 2 pipes. The passage is then opened by the enrichment or the compensation solenoid, depending on the mode.
  • Page 28 Section 06 DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM Enrichment Solenoid Compensation Solenoid NOTE: Same principle as enrichment solenoid. Solenoid Operating Principle Read Solenoid Operating Principle at the begin- A solenoid is a winding coiled in order to produce ning of the chapter concerning the enrichment so- a magnetic field.
  • Page 29 Section 06 DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM TESTING PROCEDURE DPM System Solenoids are supplied by the MPEM module. If Pump this module does not work, there will be no cur- Pressure Test rent on compensation solenoid RE/BL and BK connectors (3-10 housing); and on enrichment so- The pump must create a minimum pressure of lenoid RE/GR and BK connectors (3-11 housing).
  • Page 30 Section 06 DIGITAL PERFORMANCE MANAGEMENT (DPM) SYSTEM Solenoid STARTING PROCEDURE Static Test Apply brake. Disassemble the solenoid and connect it to a 12 V Check throttle lever operation. Make sure it re- battery. The solenoid must open and stay open. turns to idle position when released.
  • Page 31 Section 07 TECHNICAL DATA ENGINE VEHICLE MODEL SUMMIT x 670 ENGINE TYPE Number of Cylinders Bore mm (in) 78.00 (3.071) Stroke mm (in) 70.0 (2.756) Displacement 668.97 (40.82) Compression Ratio (corrected) Maximum Power Engine Speed ± 100 RPM 8000 Piston Ring Type ST/R mm (in) 0.25 (.0098)
  • Page 32 Section 07 TECHNICAL DATA VEHICLE VEHICLE MODEL SUMMIT x 670 ENGINE TYPE Chain Drive Ratio 21/43 Pitch mm(in) 9.53 (3/8) Chain Type/Links Qty/Plates Qty Silent/72/13 Type of Drive Pulley TRAC Ramp Identification Calibration Screw Position or Calibration Disc Quantity Drive Pulley Spring Color Violet/Yellow ±...
  • Page 33 Section 07 TECHNICAL DATA ENGINE LEGEND VEHICLE LEGEND CDI: Capacitor Discharge Ignition DSA: Direct Shock Action BTDC: Before Top Dead Center RRIM: Reinforced Reaction Injection Molding CTR: Center TRA: Total Range Adjustable Kilo (× 1000) N.A.: Not Applicable MAG: Magneto Side Minimum allowable width may not be less than PTO: Power Take Off Side...
  • Page 34 Section 08 WIRING DIAGRAM WIRING DIAGRAM WIRING DIAGRAM LEGEND CODE CIRCUIT Rear brake light WARNING WH/BL Ignition: between CDI and coils Ensure all terminals are properly crimped on WH/GY Safety lanyard cap the wires and all connector housings are WH/YL Trigger coil wire no.
  • Page 35 Section 08 WIRING DIAGRAM CONNECTOR HOUSING AREA CONNECTOR LOCATION IN HOUSING XX/XX 1-02D XX/XX 1-02D A00I04C A00I04D A06H33A AREA LOCATION Frame and hood junction Magneto Carburetors Rear of intake silencer Near driven pulley Under handlebar Under hood Near fuel tank A00E4WA Rear of seat 08-3...
  • Page 36 Section 08 WIRING DIAGRAM SYMBOLS DESCRIPTION Beam and tail light Female terminal Male terminal Electronic module Meter Electric motor Low level sensor Buzzer Ignition coil Normally close Normally open Male terminal switch switch on instrument Engine Frame Spark plug Meter movement ground ground Frame...
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