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G260PUM partial rebuild question

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G260PUM partial rebuild question

Old 11-20-2019, 01:26 PM
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Default G260PUM partial rebuild question


I have removed the 'old' PUM Watercooled cylinder from the engine/piston and have a OEM replacement. The piston slid out without a problem from the old one, but I cannot seem to get the piston into the new one - is there a trick? I know the ring has to compress to fit but even still it will not slide into the housing. Any help would be greatly appreciated! Thank you!
Old 11-20-2019, 05:14 PM
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Did you have the ends of the ring lined up with the pin in the ring groove? Doug
Old 12-09-2019, 07:51 AM
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As Doug said make sure you have the notched ends of the ring at the locating pin when you compress the ring and that area facing the intake port . Squeeze and wiggle .
Old 12-12-2019, 09:24 AM
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If you are replacing the jug, replace the piston ring while you're at it.

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