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Kupe's Zodiac 650B
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Date:  6-10-2019
Number of Hours:  2.00
Manual Reference:  
Brief Description:  ULPower Service Bulletin 2016-02

Received the parts for an updated Service Bulletin for the engine. ULPower had heard reports that valve cover bolts were found loose on annual inspections so they originally (in 2016) directed the use of a thread-locking application to the bolts before reinstalling them. The 2019 modification was to stop using a thread locking agent and switch to Nordlock washers which is a much more elegant solution. Was a fairly quick job to remove all 12 bolts and reinstall them with Nordlocks and torque them back to spec.
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Cylinders 1 & 3 after installation of Nordlock washers.

Cylinders 1 & 3 after installation of Nordlock washers.

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