GAS GAS EC - 2005 User Manual (English)

Questions and Answers:

H
Heidi StevensonAug 20, 2025
What causes detonations from the exhaust pipe on my GAS GAS Motorcycle?
- J
  johnwilliamsAug 20, 2025
  Detonations from the exhaust pipe of your GAS GAS Motorcycle can be caused by carbon build-up in the combustion chamber; clean the combustion chamber. It could also be due to incorrect octane or poor quality gasoline; drain the gasoline and fill up with a higher octane fuel. A damaged spark plug or one with incorrect specifications can also cause this; replace the spark plug with a new one of the correct type. Finally, check for deteriorated exhaust system gaskets and replace them if necessary.
E
Erin ShepardAug 22, 2025
What does it mean if brown smoke is coming out of the exhaust pipe of my GAS GAS EC - 2005?
- A
  Alexander WilliamsAug 22, 2025
  Brown smoke coming out of the exhaust pipe of your GAS GAS Motorcycle may indicate a restricted air cleaner.
T
Tracie OwenAug 25, 2025
What to do if my GAS GAS EC - 2005 engine does not crank?
- A
  Alexandria AyersAug 25, 2025
  If your GAS GAS Motorcycle engine doesn't crank, there could be several reasons. It might be inactive for too long; in this case, drain the old fuel and refill with new fuel. A wet or fouled spark plug can also be the cause; clean, dry, or replace it. If the engine is flooded, accelerate to max speed and press the starter pedal 5-10 times, then try starting again, and dry the spark plug. An incorrect air/fuel mixture could be the problem, so clean the fuel tank air vent and adjust the air cleaner duct. Finally, check the exhaust valve to ensure it is not stuck open and repair it if necessary.
C
Christian LynchAug 26, 2025
Why is my GAS GAS EC - 2005 engine overheating?
- O
  oharrisAug 26, 2025
  Your GAS GAS Motorcycle engine might be overheating due to insufficient cooling liquid in the circuit. If this is the case, fill up the cooling liquid and check the refrigeration system for watertightness. Another possible reason is a dirty or partially restricted radiator. Try cleaning the radiator fins, or replace the radiator if necessary.
S
Sherry RushAug 27, 2025
What to do if my GAS GAS EC - 2005 Motorcycle engine lacks power or has poor acceleration?
- M
  Madison GarciaAug 27, 2025
  If your GAS GAS Motorcycle engine lacks power or has poor acceleration, the fuel supply may be defective, so clean the fuel system and verify its operation. The air cleaner might be dirty; clean or replace it and verify its operation. Check for a leaking or deteriorated exhaust system, and replace the muffler fiberglass packing if needed. Additionally, dirty carburetor jets can cause this issue; disassemble the carburetor and clean all jets.
A
Adam Reed Jr.Aug 29, 2025
What to do if my GAS GAS EC - 2005 engine cranks but then stops?
- C
  Carla BarkerAug 29, 2025
  If your GAS GAS Motorcycle engine cranks but then stops, it could be due to an incorrect air supply. Try closing the starter, cleaning the fuel tank air vent, and adjusting the air cleaner duct. Another reason could be simply that there is no fuel, so fill up the fuel tank.
D
Darryl ElliottAug 31, 2025
Why does my GAS GAS Motorcycle engine operate irregularly?
- C
  Cynthia SmithAug 31, 2025
  An irregular operation of your GAS GAS Motorcycle engine can stem from a dirty or misadjusted spark plug; verify its condition, clean it accordingly, and tighten or replace it. Another cause might be poor contact with the spark plug cap or a cable loose in the cap; verify the spark plug cap condition and replace it if deteriorated. Also, water in the fuel can cause this issue; drain the fuel tank and fill up with new fuel. Finally, the ignition rotor might be damaged; replace the rotor.
D
Doris HendersonSep 2, 2025
What to do if my GAS GAS Motorcycle has handlebar vibration?
- L
  louis25Sep 2, 2025
  Handlebar vibration in your GAS GAS Motorcycle can be caused by a worn tire, swingarm, or its needle bearings; replace worn parts with new ones. Another reason could be a wheel rim off-center; center the rim. Also, incorrect wheel alignment can cause vibration; verify wheel spokes tension and readjust if necessary. Furthermore, excessive steering axles tolerances or loose handlebar brackets and stem locknuts can be the cause; tighten the steering bracket and steering stem locknut to the correct torque values.
J
Julia ThompsonSep 3, 2025
What to do if my GAS GAS EC - 2005 is unstable?
- K
  Kathryn LawsonSep 3, 2025
  If your GAS GAS Motorcycle feels unstable, check if a cable interferes with the handlebar turns; if so, move or loosen the cable slightly. A steering stem locknut that is too tight can also cause instability; loosen it. Additionally, damaged or worn steering bearings can be the problem; replace them.
R
rayersSep 5, 2025
What to do if the shock absorber is set too hard on my GAS GAS EC - 2005 Motorcycle?
- K
  Kelly NolanSep 5, 2025
  If the shock absorber on your GAS GAS Motorcycle is set too hard, it may be due to excessive front fork oil; pour out the excess oil until reaching the correct level. The front fork oil viscosity might be too high; drain the fork oil and fill it with the correct viscosity. Also, check if the tire air pressure is too high and adjust accordingly. Finally, an incorrect rear shock absorber adjustment can cause this issue; adjust the rear shock absorber.

GAS GAS EC - 2005 Specifications

General

Year	2005
Category	Enduro / offroad
Engine Type	Single cylinder, two-stroke
Ignition	Electronic
Cooling System	Liquid
Transmission	6-speed
Front Brake	Single disc
Rear Brake	Single disc
Fuel System	Carburetor
Front Suspension	Marzocchi upside-down fork

Summary

Foreword

How to Use This Manual

Specifications

Engine Specifications

Technical specifications for the motorcycle engines.

Transmission Specifications

Technical specifications for the transmission system.

Chassis Specifications

Specifications related to the motorcycle chassis, suspension, and dimensions.

Brake Specifications

Specifications for the braking system components.

Motorcycle Dimensions

Key physical dimensions of the motorcycle.

Component Location Overview

Handlebar Controls (EC, MC, SM)

Identifies handlebar controls for EC, MC, and SM motorcycle models.

EC 2005 Component Identification

MC 2005 Component Identification

SM 2005 Component Identification

Motorcycle Operation Basics

Side Stand Usage (EC & SM Models)

Instructions for operating the side stand on EC and SM models.

Fuel Requirements

Details on fuel mixture for 2-cycle engines.

Recommended Fuel and Oil

Vehicle Identification and Starting

Serial Number and Homologation Plate

Location and importance of serial number and homologation plate.

Engine Starting Procedure

Step-by-step guide to start the motorcycle engine.

Motorcycle Operation: Shifting and Stopping

Gear Shifting Procedure

How to use the 6-speed transmission and shift gears correctly.

Engine Stopping Procedure

Steps to safely stop the motorcycle engine.

Motorcycle Handling and Break-In

Motorcycle Stopping Procedure

How to properly stop the motorcycle using brakes and clutch.

Break-In Riding Guidelines

Recommendations for the initial riding period to ensure proper engine and transmission response.

Maintenance Schedule - Part 1

Maintenance Schedule - Part 2

Electronic Ignition System

Adjustment Procedures

How to inspect and adjust the electronic ignition timing and components.

Cooling System Maintenance

Radiator and Hoses Inspection

Checks for radiator hoses and fins for damage, obstructions, and leaks.

Cooling System Precautions

Coolant Properties and Protection

Information on coolant, corrosion inhibitors, and protection for aluminum parts.

Recommended Coolant and Level Checks

Coolant Level and Replacement

Checking and Adding Coolant

Step-by-step guide to check and replenish the coolant level.

Coolant Replacement Procedure

Instructions for draining and replacing the motorcycle's coolant.

Spark Plug Maintenance

Spark Plug Specifications and Inspection

Details on spark plug types, gap setting, and inspection for correct heat range.

Transmission Oil Management

Checking Oil Level

Procedure to inspect the transmission oil level using the inspection window.

Changing Transmission Oil

Step-by-step guide for draining and refilling transmission oil.

Air Cleaner System

Air Cleaner Importance and Warnings

Explains the function of the air cleaner and potential issues from a clogged filter.

Air Filter Cleaning Procedure

Detailed steps for cleaning the air filter element safely and effectively.

Throttle Cable Adjustment

Carburetor Idle Speed Tuning

Clutch Lever Adjustment

Exhaust System Maintenance

Muffler Replacement Procedure

Steps for replacing the exhaust muffler and associated parts.

Muffler Fiber Replacement

Drive Chain Maintenance

Drive Chain Slack Inspection

How to check and inspect the drive chain slack for proper tension.

Drive Chain Slack Adjustment

Chain and Sprocket Wear

Chain Guide and Sprocket Inspection

Chain Guide Slider Inspection

How to inspect the chain guide slider for wear or damage.

Handlebar Adjustment

Handlebar Position Adjustment

How to adjust the handlebar position for rider comfort and control.

Brake System Adjustments

Front Brake Lever Free Play

How to adjust the front brake lever for optimal feel and response.

Rear Brake Pedal Position

Procedure for adjusting the rear brake pedal position and free play.

Brake Fluid Management

Brake Fluid Level and Inspection

How to inspect and maintain the brake fluid level in reservoirs.

Brake Pad Wear Inspection

Steering Adjustment

Steering System Adjustment

Checking and Adjusting Steering

Procedure to check for steering looseness and perform adjustments.

Steering Lock Operation

Front Fork Adjustments

Rebound Dampening Adjustment

How to adjust the front fork's rebound damping for desired response.

Air Pressure Considerations

Front Fork Compression Adjustment

Front Fork Oil Level Adjustment

Suspension Spring Installation

Suspension Top Bridge Adjustment

Rear Suspension Overview

Shock Absorber Extension Adjustment

How to adjust the rear shock absorber's extension damping.

Rear Suspension Compression Adjustment

Low Compression Adjustment

How to adjust the low compression damping on the rear shock absorber.

High Compression Adjustment

How to adjust the high compression damping on the rear shock absorber.

Suspension Spring Adjustment

Rear Shock Absorber Spring Replacement

Wheel and Tire Considerations

Tire Pressure and Road Conditions

Adjusting tire pressure based on road conditions and rider preference.

Wheel Rim Runout

Motorcycle Cleaning Procedures

Bolt and Nut Tightening Checks

Torque Specifications Table

Lubrication Procedures

General Lubrication Points

Identifies key points for applying grease or oil for general lubrication.

Drive Chain Lubrication

How to properly lubricate the drive chain for optimal performance and longevity.

Carburetor Tune-Up: Mixture

Mixture Settings by Condition

How to adjust fuel mixture based on air temperature and altitude.

Main Jet Function

Carburetor Jet Adjustment

Slow Jet and Air Screw Adjustment

How to adjust the slow jet and air screw for low-speed mixture control.

Carburetor Jet Needle Tuning

Troubleshooting Carburetor Settings

Symptoms of Improper Settings

Identifying common engine issues caused by incorrect carburetor settings.

Spark Plug Diagnosis

Carburetor Correction Factors

Carburetor Tuning Charts

Suspension Tuning Overview

Suspension Tuning Factors

Key factors influencing suspension tuning: rider weight, ability, and terrain.

Front Fork Oil Level Adjustment

Suspension Troubleshooting and Settings

Front Fork Issues and Solutions

Common front fork issues and their likely corrections.

Rear Shock Absorber Issues

Common rear shock absorber issues and their likely corrections.

Determining Proper Settings

Guidelines for setting up suspension based on rider and conditions.

Suspension Tuning Based on Rider and Performance

Rider Experience and Weight Considerations

How rider factors influence suspension setup choices.

Suspension Balance and Performance Checks

Procedure to check if front and rear suspension are balanced.

Front Fork Performance Issues

Diagnosing and correcting issues like skidding, turning inward, or slipping.

Suspension Troubleshooting: Specific Scenarios

Front Fork Response and Rear End Issues

Diagnosing and correcting issues with front fork response and rear end jumping.

Gearshift Ratio Development

Final Recommendations and Advice

Preventive Advice and Safe Riding

General recommendations for maintenance, safety, and responsible riding.

Terrain-Specific Care

Homologation Requirements

Competition Preparation and Maintenance

Motorcycle Storage Procedures

Multifunction Display Operation

Multifunction Display Settings

Clock Accuracy and Trip Meter

How to adjust clock accuracy and reset trip distance.

Wheel Travel Adjustment

Troubleshooting Engine Issues

Troubleshooting Engine and Exhaust Issues

Troubleshooting Transmission and Stability Issues

Troubleshooting Suspension and Vibration Issues

Troubleshooting Handling, Brakes, and Electrical Issues

Warranty Terms and Conditions

Warranty Exclusions and Various Clauses

Related product manuals

GAS GAS EC ROOKIE - 2005

40 pages

EC 2T 20012501300cc RACING

107 pages

HALLEY 2T EC-SM - PART LIST 2009

66 pages

GAS GAS ENDURO 4T EC 2014

77 pages

GAS GAS EC 250 2021

162 pages

GAS GAS EC-2T - PART LIST 2011

GAS GAS EC - 2005 User Manual

Table of Contents

Questions and Answers:

GAS GAS EC - 2005 Specifications

Summary

Foreword

How to Use This Manual

Specifications

Engine Specifications

Transmission Specifications

Chassis Specifications

Brake Specifications

Motorcycle Dimensions

Component Location Overview

Handlebar Controls (EC, MC, SM)

EC 2005 Component Identification

MC 2005 Component Identification

SM 2005 Component Identification

Motorcycle Operation Basics

Side Stand Usage (EC & SM Models)

Fuel Requirements

Recommended Fuel and Oil

Vehicle Identification and Starting

Serial Number and Homologation Plate

Engine Starting Procedure

Motorcycle Operation: Shifting and Stopping

Gear Shifting Procedure

Engine Stopping Procedure

Motorcycle Handling and Break-In

Motorcycle Stopping Procedure

Break-In Riding Guidelines

Maintenance Schedule - Part 1

Maintenance Schedule - Part 2

Electronic Ignition System

Adjustment Procedures

Cooling System Maintenance

Radiator and Hoses Inspection

Cooling System Precautions

Coolant Properties and Protection

Recommended Coolant and Level Checks

Coolant Level and Replacement

Checking and Adding Coolant

Coolant Replacement Procedure

Spark Plug Maintenance

Spark Plug Specifications and Inspection

Transmission Oil Management

Transmission Oil Management

Checking Oil Level

Changing Transmission Oil

Air Cleaner System

Air Cleaner Importance and Warnings

Air Filter Cleaning Procedure

Throttle Cable Adjustment

Carburetor Idle Speed Tuning

Clutch Lever Adjustment

Exhaust System Maintenance

Muffler Replacement Procedure

Muffler Fiber Replacement

Drive Chain Maintenance

Drive Chain Slack Inspection

Drive Chain Slack Adjustment

Chain and Sprocket Wear

Chain Guide and Sprocket Inspection

Chain Guide Slider Inspection

Handlebar Adjustment

Handlebar Position Adjustment

Brake System Adjustments

Front Brake Lever Free Play

Rear Brake Pedal Position

Brake Fluid Management

Brake Fluid Level and Inspection

Brake Pad Wear Inspection

Steering Adjustment

Steering System Adjustment

Checking and Adjusting Steering

Steering Lock Operation

Front Fork Adjustments

Rebound Dampening Adjustment

Air Pressure Considerations

Front Fork Compression Adjustment