2006 Keeway F-act Matrix 50 OEM Service Manual (P/N 061467)

Get straight to the specs you need. This 116-page PDF contains the Keeway Italia factory workshop manual for the F-act / Matrix 50 cc, identified as Rif. 061467, December 2006 edition. The factory text is in Italian. Coverage centers on the 49.8 mL single-cylinder two-stroke with forced-air cooling, piston-reed induction, CDI ignition, electric and kick starting, forced oiling, a dry centrifugal clutch, and V-belt variator drive. It provides repair coverage for engine, transmission, fuel/oil, electrical, brake, steering, suspension, wheel, and body-panel work—not just routine maintenance.

Workshop Data and Specifications

Designed for practical use in the shop, the manual gives working clearances, fuel-system settings, lubrication data, torque values, wear limits, and electrical test information. The CVT and clutch are treated separately from the final-drive gear oil, which matters when servicing this dry belt-drive system. Maintaining the specified factory tolerances is critical to safe operation; verify the relevant specification before applying torque or changing engine or brake settings.

Key technical highlights include:

• Engine specifications: 49.8 mL displacement, 40.0 mm bore, 39.6 mm stroke, 6.9:1 compression ratio, 15° ignition timing at 1500 rpm, and a 1400 ±100 rpm idle setting.
• PZ19JB carburetor data: 19 mm throat, #80 main jet, #57.5 pilot jet, needle clip in the third groove, 13 ±1 mm float height, and an idle-air screw baseline of 1 1/2 ±1/2 turns out.
• Internal service limits: piston-to-cylinder clearance of 0.06–0.07 mm standard with a 0.120 mm limit, cylinder bore of 40.005–40.020 mm with a 40.075 mm limit, and crankshaft runout limited to 0.05 mm.
• Capacities and fluids: 5.2 L fuel tank, 1 L engine-oil tank, SAE 90 final-drive oil with a nominal 0.1 L capacity, and DOT 4 brake fluid in the front hydraulic brake service section. The final-drive refill procedure also gives a 90 mL service-fill figure. Forced-air cooling means there is no liquid-coolant circuit to service.
• Torque and chassis data: scheduled cylinder-head nut tightening is specified at 15–18 N·m; the chassis torque table includes 55–60 N·m for the front axle nut, 22–29 N·m for the front disc-caliper mounting bolt, and 100–130 N·m for the rear wheel nut. Tire-pressure specifications are 175 kPa front and 196 kPa rear.

The scheduled-maintenance table runs from the initial 1,000 km / 600 mile service through 6,000, 12,000, 18,000, and 24,000 km intervals. The air cleaner is called out for cleaning every 3,000 km, brake fluid for replacement every two years, and the brake hose every four years.

Repair and Diagnostic Coverage

The engine section distinguishes components that can be removed with the engine still in the frame, then goes into full engine removal, disassembly, inspection, and reassembly. Factory repair procedures cover crankcase separation, bearings and oil seals, crankshaft inspection and installation, cylinder and piston measurement, piston rings, reed valve inspection, final-drive gears, starter gearing, the driven pulley and centrifugal clutch, movable variator pulley, kick-start mechanism, oil pump, intake tract, and flywheel magneto.

The CVT section includes clutch engagement and lock-up testing, clutch-shoe and drum inspection, drive-belt width checks, pulley and roller inspection, driven-pulley spring checks, and belt/pulley reassembly notes. Chassis repair extends to front-wheel bearing service, front disc-brake pad replacement, caliper overhaul, master-cylinder overhaul, brake bleeding, steering-stem and front-suspension service, plus rear wheel and drum-brake inspection.

Electrical coverage is much deeper than a single wiring page. It includes CDI/ignition-coil testing, magneto excitation-coil checks, charging-output and stator tests, regulator/rectifier resistance checks, starter-motor and starter-relay diagnosis, fuel-gauge and sender testing, oil-level switch inspection, battery charging, switch continuity tables, and troubleshooting charts for engine, carburetor, electrical, chassis, and brake faults.

Diagrams, Tools, and Repair Notes

Representative factory views include the CDI ignition-system schematic, charging and lighting circuit, starter/anti-theft circuit, signal and oil-level warning circuit, the full wiring diagram, and the cable/brake-hose routing layout. Additional exploded component views cover the driven pulley/clutch, movable variator pulley, front wheel, front brake, steering stem, and rear brake assemblies.

The special-tool section identifies tools such as T01 T-shaped guide cylinder, T02 guide cylinders in multiple sizes, T03 threaded flywheel-removal rod, T07 cylinder gauge, T08 piston-pin removal tool, and T10 flywheel locknut removal tool, plus a clutch clamp. These are tied to actual disassembly and reassembly operations throughout the manual.

Several repair cautions are specific enough to prevent expensive mistakes. The crankshaft is not to be driven into the crankcase with a plastic hammer because the manual warns that crankcase alignment can be affected; a special installation tool is specified instead. The clutch assembly is spring-loaded, and releasing it suddenly can launch components, while the clutch-shoe unit itself is specifically marked not to be dismantled. The air-filter element must also seat correctly so intake air cannot bypass it—the manual directly links a defective or poorly fitted element to accelerated piston-ring and cylinder-bore wear.