AJS Highway Star 125 User Manual

AJS Highway Star 125

61 pages

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Owners Manual

Please study this manual carefully before

riding the motorcycle for the ﬁrst time

Questions and Answers:

B
Brenda SampsonAug 14, 2025
How to fix AJS Highway Star 125 engine that does not start?
- R
  Richard HurstAug 14, 2025
  If your AJS Motorcycle engine doesn't start, start by checking if the battery is discharged and charge or replace it if necessary. Ensure the engine kill switch is set to the “ON” position. Also, make sure the side stand is up or the motorcycle is in neutral, or the clutch is pulled in. Check for sufficient fuel in the tank. Inspect the battery leads and tighten them if loose. Finally, verify the fuse and replace it if blown, checking for any electrical shorts.
D
Daniel WalkerAug 18, 2025
What to do if AJS Motorcycle engine fires but will not start?
- M
  Michael ClarkAug 18, 2025
  If your AJS Motorcycle engine fires but won't fully start, the engine may be flooded. Remove, clean, or replace the spark plug. Inspect fuel pipes for any restrictions. Ensure the fuel isn't contaminated by draining and replenishing it. Check the intake hoses for air leaks and verify that the air filter isn't blocked. Also, inspect the exhaust system for blockages. Finally, check for water in the fuel system and drain if needed.
S
Selena GallowayAug 20, 2025
What to do if AJS Highway Star 125 Motorcycle does not start because of no fuel?

AJS Highway Star 125 Specifications

General

Brand	AJS
Model	Highway Star 125
Category	Motorcycle
Language	English

Summary

IGNITION SWITCH AND LOCK

IGNITION SWITCH OPERATION AND SAFETY

Explains switch positions, steering lock operation, and warns against moving the vehicle with the lock engaged.

LEFT HANDLEBAR CONTROL

LEFT HANDLEBAR CONTROLS AND SAFETY

Explains clutch, lights, horn, and signal controls, including crucial safety warnings.

RIGHT HANDLEBAR CONTROL

RIGHT HANDLEBAR CONTROLS AND STARTING

Explains engine stop/start switches, throttle grip, and front brake lever operations.

FUEL FILLER CAP

FUEL FILLER CAP OPERATION AND REFUELING SAFETY

Covers cap operation, fuel type for converters, and refueling safety precautions.

GEAR LEVER

GEAR SHIFTING PROCEDURE AND CAUTIONS

Explains gear shifting, clutch use, and cautions about neutral indicator and aggressive shifting.

SIDE STAND

SIDE STAND OPERATION AND SAFETY FEATURES

ENGINE LUBRICATION OIL

ENGINE OIL CHANGE AND FUEL FILLING SAFETY

Covers engine oil selection, change procedures, and critical fuel filling safety warnings.

RUNNING IN A NEW ENGINE

NEW ENGINE BREAK-IN PROCEDURE AND PRECAUTIONS

THE FIRST OIL CHANGE

FIRST OIL CHANGE AND SERVICE SCHEDULE ADHERENCE

STOPPING AND PARKING

SAFE STOPPING, PARKING, AND SECURITY

INSPECTION AND MAINTENANCE

INSPECTION, MAINTENANCE, AND WARRANTY

Highlights the importance of regular inspection, maintenance, and warranty adherence.

FUSE

FUSE FUNCTION, SAFETY, AND REPLACEMENT

Explains fuse function, safety warnings about rating, and replacement procedures.

AIR FILTER

AIR FILTER MAINTENANCE AND REPLACEMENT

Provides step-by-step guidance on how to maintain and replace the air filter.

SPARK PLUGS (NGK CR7HS)

SPARK PLUG INSPECTION, ADJUSTMENT, AND REPLACEMENT

ENGINE OIL RENEWAL

ENGINE OIL CHANGE PROCEDURE AND SAFETY

ADJUSTING THE CLUTCH CABLE

CLUTCH CABLE ADJUSTMENT PROCEDURE

DRIVE CHAIN

DRIVE CHAIN INSPECTION, MAINTENANCE, AND SAFETY

DRIVE CHAIN ADJUSTMENT

DRIVE CHAIN ADJUSTMENT AND TENSION WARNINGS

Covers chain adjustment procedure and warns about the risks of incorrect tension.

BRAKE PADS

BRAKE PAD WEAR CHECK AND REPLACEMENT

BRAKE DISCS

BRAKE DISC CONDITION, CARE, AND SYSTEM SAFETY

TYRES

TYRE PRESSURE, CHECKS, AND SAFETY WARNINGS

ENGINE STALLING / CUTTING OUT

ENGINE STALLING CAUSES AND IGNITION CIRCUIT FUNCTIONS

CLEANING THE MOTORCYCLE

CLEANING PROCEDURES, BRAKE DISC WARNING, AND EXHAUST CARE

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