Target Audience:
Entry-level and intermediate riders seeking a lightweight 125cc two-stroke for road and light off-road use
Market Segment:
Learner-legal 125cc enduro/trail motorcycle popular in European markets
Competitors:
Aprilia RX 125, KTM 125, Honda MTX 125, Yamaha DT 125
Key Advantage:
Italian-built chassis with race-derived two-stroke engine and distinctive Gilera styling
Key Features:
Liquid-cooled 125cc two-stroke single, lightweight tubular frame, long-travel suspension
Manual Type:
Service and repair workshop manual
Coverage Areas:
Engine, fuel system, ignition, transmission, chassis, suspension, brakes, electrical, bodywork
Delivery Method:
Instant digital download
Binding:
Digital (PDF document)
Page Count:
N/A - page count not specified for this download
Engine:
Two-stroke single cylinder: removal, disassembly, cylinder and piston service, reassembly
Lubrication:
Two-stroke oil injection system and premix guidance
Fuel System:
Carburetor disassembly, jetting, float height, fuel tap and tank
Ignition:
CDI system, stator, spark plug, timing checks
Cooling:
Liquid cooling system: radiator, hoses, pump, coolant replacement
Exhaust:
Expansion chamber and silencer inspection, decarbonizing
Clutch:
Wet multi-plate clutch: inspection, measurement, replacement
Transmission:
Gearbox disassembly, shift drum and fork service, gear ratios
Final Drive:
Chain inspection, adjustment and replacement, sprocket service
Frame and Body:
Tubular frame checks, fairing and body panel removal and refitting
Front Suspension:
Telescopic fork disassembly, seal replacement, oil change
Rear Suspension:
Swingarm service, rear shock inspection and replacement
Wheels and Tires:
Spoked wheel truing, bearing replacement, tire removal and fitting
Brakes:
Front and rear disc brakes: pad replacement, caliper and master cylinder service, bleeding
Electrical System:
Wiring diagrams, battery, lighting, switches, charging system checks
Torque Specifications:
Fastener torque tables for engine and chassis
Technical Depth:
Full teardown and rebuild level with step-by-step instructions
Troubleshooting:
Symptom-based diagnostic charts for engine, starting, and electrical faults
Parts Information:
Exploded diagrams and part identification to support ordering
Special Tools:
Required special tools identified where applicable
Specifications:
Complete service specifications, clearances, and capacities
Periodic Maintenance:
Service schedules and adjustment procedures
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Engine Type:
Single cylinder two-stroke
Lubrication:
Two-stroke oil injection / premix
Bore and Stroke:
N/A - not specified for this model, refer to manual
Compression Ratio:
N/A - not specified for this model, refer to manual
Fuel System:
Carburetor (slide-type), gravity/petcock fuel feed
Ignition:
CDI electronic ignition
Power Output:
N/A - not specified for this model; typical for restricted 125cc class of the era
Wheelbase:
N/A - not specified, refer to manual specifications
Overall Length:
N/A - not specified, refer to manual specifications
Seat Height:
N/A - not specified for this model
Fuel Capacity:
N/A - not specified, refer to manual
Curb Weight:
N/A - not specified for this model; typical lightweight 125cc class construction
Instrumentation and Electrical
Instrument Cluster:
Analog speedometer with indicator lamps
Audio System:
N/A - no audio system on this model
Driver Assistance:
N/A - not applicable to motorcycles of this era
Electrical Notes:
12-volt electrical system with CDI ignition; wiring diagram included in manual
Engine Oil (2-Stroke):
Check oil injection tank level regularly; top up as required
Gearbox Oil:
Replace per schedule in manual; check level and leaks between changes
Coolant:
Inspect level before each ride; replace per manual interval
Chain:
Clean, lubricate and adjust regularly; replace when wear limit reached
Spark Plug:
Inspect and clean at regular intervals; replace when fouled or eroded
Common Wear Items and Issues
Two-Stroke Wear:
Piston, rings and cylinder require periodic inspection; decarbonize exhaust ports and silencer
Carburetor:
Jets and passages may gum up if stored with fuel; clean thoroughly
Fork Seals:
Common wear item; replace seals and fork oil as needed
Fluid Specifications:
Brake fluid, fork oil, gearbox oil, and coolant grades listed in the manual
Manufacturer:
Gilera, historic Italian motorcycle manufacturer founded in 1909 in Arcore, Italy
Brand Heritage:
Gilera has a long Grand Prix racing history and became part of the Piaggio Group in 1969
Model Evolution:
The Apache 125 evolved from Gilera's 125cc enduro line of the late 1980s, offered in enduro and supermotard-oriented formats
Production Location:
Italy
