Lifan 125cc Engine Motor + Kits Replace for Z50A CT110 ATC70 Lifan Pit Dirt Bike. GENUINE LIFAN 4 Stroke 125cc ENGINE. Note: This is not a guarantee, if you are unsure, please check with your local dealer. HONDA CRF50 / CRF70 / XR50 / XR70 / Z50 / Z50R / CT70 Mini Trail / Z50 / Minitrail Monkey / XL70 ST70 / QA50 / QR50 / CL70 / SL70 / 70 Passport / CS 90 / SL 90 / ZB 50 /. We have not had a single problem with the engine. Type: 1-cylinder, horizontal, 4-stroke, air-cooled electric and kick start Bore x Stroke: 52.4mm x 55.5mm Displacement: 120ml Max. Power & Corresponding Speed: 5.8KW/7500rpm±375rpm Max. Torque & Corresponding Speed: 8.5N. Pollutant Index: =5.5 g/km (CO), =1.2g/km (HC) 0.23g/km(NOx) Clutch Type: Centrifugal friction clutch Semi Auto Start Mode: electric or kick start Compression: 9.0:10. Gear ratio: 2.833/1.706/1.238/0.958. Ignition type and spark plug model: CDI, A7TC. Advance angle of ignition: 15°±1°/1500r/min. Valve clearance: 0.05mm. Carburetor type: PZ22 Total lubricating oil capacity: 900mL Lubricating mode and type of lubricating oil pump: pressure and Splash, Internal and external rotor type Dimensions: 470×275×280mm (18.5×10.8×11 inch). Engine Oil: 900ml, 15W/40-SE, 4 stroke Gears: 0-1-2-3-4 4 Up. Sprocket: 15T 428 CHAIN 20mm. 1 x LIFAN 125CC engine motor. 1 x Kick Starter Lever. 1 x Gear Shift Lever. 1 x Muffler Manifold Pipe. 1x Full Wiring Harness. 1x Pair Hand grips. 1x 1/4 Turn Quick Twist Throttle. 1x 1000/115MM throttle cable. Check the oil level with a dipstick. If the oil level is lower than the lower cut line of the dipstick, add lubricating oil to the upper cut line. Do not increase the load in the cooling machine, must preheat the engine 1 to 3 minutes in advance. The break-in of the engine is very important. In a new engine within 650miles, the throttle should never be fully open and the gear should be changed at any time. Poor break-in leads to more faults. During break-in, the engine oil should be changed every 185 miles or so;After travelling 210 miles, an adjustment should be made to compensate for the slight wear during the break-in period, so as to ensure the good performance of the engine and extend its service life. For specific break-in requirements, refer to the instructions. Idle adjustment (1) Twist the idle screw clockwise completely into place, and then reverse 1 5/8 turn. (2) Preheat the starting engine to the working temperature, and adjust the idle speed to 1500r/min±100r/min with the fixing screw of the oil door plunger. (3) Then turn the idle fine-tuning screw to achieve the maximum steady speed of the engine, and then re-adjust the locking screw with the oil door plunger to the specified 1500r/min±100r/min. Use of electric starting: It is advisable to use electric starting in neutral. If electric starting is used in other gears, braking must be applied simultaneously. If the battery power is not enough, just drive a few miles battery after automatic charging, can be used.