Kawasaki S2 (1972-1973) [27/129] Engine left side
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Kawasaki S2 (1972-1973) [27/129] Engine left side

Kawasaki S2 (1972-1973) [27/129] Engine left side

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Table 8 Piston Ring Dimensions S1 KH250 i Model A B inch 0827 1 0039 mm 2 1 0 1 Top inch 2nd mtn 1 5 01 1 0 03 2 1 0 1 meh 0591 04 0012 0906 004 Top CM 0827 i 0039 Z mm 2 3 0 1 inch 0906 004 mm 2 3 0 1 meh 0945 004 NOTE Make certain that the first and second rings in their correct grooves 2nd o Top o a mm 1 5 0 0 03 2 4 0 1 inch 0591 004 5 0012 0787 004 mm 1 5 01 0 03 2 0 2 0 1 2nd 3 Assembly Assembly is the reverse of disassembly 5 ENGINE LEFT SIDE b Piston Ring Tension The piston rings must have a certain amount of spring tension so that they will ride snuggly against the inside cylinder wall and prevent com pression leakage However too much tension will cause abnormally fast wear and may possibly bring about piston seizure Confinn correct ring tension by measuring the gap between the ends of the ring with the ring sitting free from any restrictions Table 9 Ring End Gap free Model SI KH250 inch mm S2 inch mm S3 KH400 inch mm Top 24 6 2nd 24 6 256 6 5 24 6 256 6 5 335 8 5 c Piston Ring Groove Clearance This clearance is too allow room for piston ring expansion But too much clearance will allow compression leakage and too little clearance will cause the ring to stick to the piston and invite piston seizure Meaurc clearance A at several points around the piston to determine the extent of piston or ring wear Tabic 10 Ring Groove Clearance Groove Standard lop inch mm 0035 0051 0 09 0 13 2nd inch mm 0020 0035 0 05 0 09 Service Limit 0067 0 17 0047 0 12 On the left side of the engine are located left cover the front chain case cover and in arc the AC generator engine sprocket and clutch release mechanism The engine sprocket which transmits mo to the rear wheel via the chain collects dirt sand easily and is therefore made of special w resistant steel to minimize damage from this NOTE Regarding the AC generator removal remounting only arc explained here generator construction overhaul and adjustm sec page 105 or 111 Also for clutch rele mechanism removal and overhaul sec the cl section page 29 1 Disassembly Contact breaker type model See page 11 for removal of front chain c cover and gear shift pedal a Left Cover Remove the two mounting screws and pull the left cover

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