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Compression Test

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Follow this guide to conduct a cylinder compression test on a 2019 Echo Power Pruner model PPT-2620.

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  1. Compression Test, Safety precautions: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Compression Test, Safety precautions: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Flip the power switch into the STOP position.

    • Make sure the engine is cool to the touch before proceeding.

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  2. Compression Test, Remove the spark plug cap: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Compression Test, Remove the spark plug cap: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Pull the spark plug cap straight off of the spark plug.

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  3. Compression Test, Remove the spark plug: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Use a 5/8-inch spark plug socket to remove the spark plug from the engine.

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  5. Compression Test, Check the spark plug for wear: crwdns2935265:04crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Check if the spark plug is fouled and replace it if necessary.

    • The spark plug pictured in this step is in new condition.

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  6. Compression Test, Connect a compression tester: crwdns2935265:05crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Follow the instruction provided with your compression test kit to connect a compression tester to the cylinder.

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  7. Compression Test, Test compression: crwdns2935265:06crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Compression Test, Test compression: crwdns2935265:06crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Pull the starter 5–10 times to build pressure in the combustion chamber.

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  8. Compression Test: crwdns2935265:07crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Read the compression gauge.

    • Pressure should read 125–165 psi (8.6–11.4 bar).

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To reassemble your device, follow these instructions in reverse order.

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Sam Omiotek

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