My Svartqvarna mod 24 is impossible to start

Fråga: Hi . thanks for your help in the past. My Svartqvarna mod 24 is now impossible to start. Even spinning the engine with an electric drill doesn’t work. I intend to buy a compression tester but can you tell me what the pressure should be.

If I need a cylinder rebore is this expensive? Can I establish the current condition of the cylinder.ie has it still got a standard piston or has it been oversized. How can I measure the bore. Lots of questions. Thanks

Edward Hunt

 

Svar: The pressure should be around 5 to 7 kilo (Bar). Keep the throttle fully open when testing. If you live in Sweden the price for a rebore is 700 to 1000 SEK.

Standard bore is 55 mm. There are three oversizes: 55,50 mm, 56,00 mm and 56,50 mm. You have to remove the cylinderhead to measure the bore diameter. Use a caliper.

Jim Lundberg

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