Question about 2002 Hyosung RX 125
It sounds like you have the cam 180 degrees out of time. The engine locks up because the piston is hitting an open valve. Hopefully the valve is not bent.
Posted on May 17, 2009
Hyosung rx 125 model 2004 too 2005 please send me your best quotation thank you and best regards mohsen.jvd
Posted on Feb 05, 2011
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Posted on Jan 02, 2017
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ADJUSTMENT Although it is sometimes possible to reuse an old cylinder head cover gasket, in most cases it makes more sense to purchase a new one before beginning the procedure. Some vehicles may require the use of silicone sealant either with or without a new cover gasket. For more details, please refer to the cylinder head cover procedures in Engine & Engine Overhaul of this repair guide and refer to the gasket manufacturer's instructions.
See Figures 1, 2 and 3
For the intake valves: 1-4-5-8 valve clearance is 0.012 in. (0.30mm). For the exhaust valves: 2-3-6-7 valve clearance is 0.012 in. (0.30mm). The pivot locknut torque specification is 12-16 ft. lbs. (16-22 Nm).
Fig. Fig. 1: Check the valve clearance with a flat feeler gauge-Z24i engine
Fig. Fig. 2: Loosen the locknut and turn the adjusting screw to adjust the valve clearance-Z24i engine
Fig. Fig. 3: With the No. 1 piston at TDC, adjust the top set of valves FIRST; with the No. 4 piston at TDC, adjust the bottom set of valves SECOND-Z24i engine
Fig. Fig. 4: Cross-sectional view of an installed hydraulic valve lifter-4 cylinder engine
Fig. Fig. 5: Cross-sectional view of an installed hydraulic valve lifter-6 cylinder engine
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