Kawasaki GPX250R (1987) [71/248] 12 engine top end
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Kawasaki GPX250R (1987) [71/248] 12 engine top end

Kawasaki GPX250R (1987) [71/248] 12 engine top end

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4 12 ENGINE TOP END Remove the cylinder head bolts Using the starter motor rotate the engine over with the throttle fully open until the compression gauge stops rising the compression is the highest reading obtain able Repeat the measurement for the other cylinder Cylinder Head Installation Cylinder Compression Usable Range 980 1500 kPa 470 r min rpm 10 0 15 3 kg cm2 142 218 psi lf cylinder compression is higher than hte standard value check the following 1 Carbon build up on the piston on the piston head and cylinder head clean off any carbon on the piston head and cylinder head 2 Cylinder head gasket cylinder base gasket use only the proper gaskets for the cylinder head and base The use of gaskets of the incorrect thickness will change the compression 3 Valve stem oil seals and piston rings rapid carbon accumulation in the combustion chambers may be caused by damaged valve stem oil seals and or dam aged piston oil rings This may be indicated by white exhaust smoke lf cylinder compression is lower than the service limit check the following 1 Gas leakage around the cylinder head replace the damaged gasket and check the cylinder head for warp 2 Condition of the valve seating 3 Valve clearance if a valve requires as unusually adjustment to obtain proper clearance the valve may be bend and not seating completely 4 Piston cylinder clearance piston seizure 5 Piston ring piston ring groove 1 Cylinder Head Bolts 06 mm 2 Cylinder Head Bolts 08 mm 3 Chain Guide Bolt Upper Remove the oil hose banjo bolt Before removing the cylinder head hold the carburetor to the air cleaner duct with a strings Pull off the cylinder head and remove the cylinder head gasket Cylinder Head Removal Remove the following parts Fairing see Fairing Removal in Frame chapter Coolant Draining see Coolant Draining in Cooling System chapter Ful Tank see Fuel Tank Removal in Fuel System chapter Radiator see Radiator Radiator Fan Removal in Cooling System chapter Muffler see Muffler Removal Camshaft Chain Tensioner Left and Right Engine Bracket with Ignition Coils Remove the thrmostat housing bolts and free the housing Remove the cylinder head cover Remove the camshaft Remove the rear camshaft chain guide bolt upper and take the guide off the cylinder head Pull the front camshaft chain guide off the cylinder head A Cylinder B Carburetor Head C Strings Cylinder Head Installation Notes When installing the cylinder head be careful of the following items Replace the cylinder head gasket with a new one Tighten the cylinder head bolts 0 8 and 06 to the specified torque see Exploded View

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