Measure ring end gap by pushing the ring 10mm down into the cylinder bore. Replace rings if the gap exceeds 0.50 mm. 5. Torque Specifications
Before cracking open your engine casing, ensure your specific variant matches these benchmark values: Specifications & Values
Place a drain pan underneath and remove the cap, spring, and oil strainer screen. 162fmj Engine Service Manual
0.6 mm – 0.8 mm (Standard Plug: NGK D8TC or D8EA) 2. Routine Maintenance Schedule
The manual lists the stock cam lift (usually 5.0mm). If you want more power, you can source a "race cam" (6.5mm lift), but the manual warns that exceeding the valve spring coil bind limit (found in Section 3) will destroy the engine. Measure ring end gap by pushing the ring
The is a highly popular, Chinese-manufactured 150cc single-cylinder, 4-stroke, air-cooled vertical motorcycle engine . Produced heavily by top manufacturers like Lifan, Shineray, and Loncin , this engine is built around the timeless Honda CG125/CG150 pushrod (OHV) blueprint. Because it relies on a rugged pushrod and rocker arm setup rather than an overhead camshaft (OHC), it is known across the globe for being exceptionally reliable, cheap to maintain, and highly resilient in harsh utility environments.
Turn clockwise until closed (do not force), then turn back 1.5–2.5 turns. IV. Trouble Shooting Guide If you want more power, you can source a "race cam" (6
: This unusual but common problem after a rebuild is typically caused by installing the first gear backwards . Reverse gears have cut teeth on the opposite angle.
is a 150cc, single-cylinder, four-stroke air-cooled engine. It is widely used in commuter motorcycles, dirt bikes, and utility vehicles like go-karts and ATVs across brands like Engine Specifications Specification Engine Type Single-cylinder, 4-stroke, Air-cooled Displacement 149.4mL (approx. 150cc) Bore x Stroke 62.0 mm × 49.5 mm Compression Ratio ~8.2 kW at 8,500 rpm Max Torque ~9.8 N.m at 7,500 rpm Spark Plug D8TC (Ignition: CDI) Service & Maintenance Guide 1. Lubrication System Oil Capacity: