Husqvarna 562 XP G Workshop Manual - Page 47
Assembling the piston and cylinder
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Faults and causes Score marks on the piston (A) 1. Leakage, check not carried out. 2. Too low octane fuel. 3. Too low or incorrect oil in the fuel. Carbon build-up (B) 1. Too much or incorrect oil in the fuel. See Figure 63. Piston ring breakage 1. Piston ring worn out. 2. Oversized piston ring groove. A Fig 63 Repair Instructions B 7.22 Assembling the piston and cylinder 1 Oil the gudgeon pin bearing with two-stroke oil and insert it into the crank rod. See figure 64. 2 Replace the piston with the arrow facing the exhaust port, and slide in the gudgeon pin and fit the circlips. NOTE! Use new circlips. See figure 64. 3 Oil the piston and piston ring with two-stroke oil. 4 Put a new cylinder base gasket in place. Compress the piston ring and carefully push the piston into the cylinder opening. 5 Attach the cylinder. The screws must be tightened crosswise with a tightening torque of 8-10 Nm. NOTE! It is very important that the intake system is sealed. Otherwise the engine may seize up. Fig 64 Fig 65 English - 47