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Old 07-13-2025, 08:11 PM
OKcubfan OKcubfan is offline
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Join Date: Dec 2013
Location: OK
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Default Cub Cadet 2550 Valve Cover

I picked up a nice 2550 in Oct 23. Mowed a couple of times the rest of the year.

Early spring it received an oil and filter change, blades sharpened, lots of grease where i needed it etc. Used it lots in 2024. Discovered the oil filler cap was damaged mid July 2024 (one "wing" was broken and the cap would not tighten Suspect a relative borrowed it and damaged it. Could not find the missing or broken off part) Replaced that housing with OEM part, changed oil and filter and it worked as it had in the past for the remainder of 2024.

So,,,,April 2025 rolls around. Fired it and the 1811 up for first time. Letting them warm up so I could change oil and filter etc. 2550 had been running about 3-5 minutes when I heard a seriously loud BANG. Turned around to to see smoke coming off of the left front of the motor. Killed the motor and raised the hood.

I found oil pouring off of the left front side of the motor to find a 1" sized triangle hole in the Valve Cover-Fuel Pump (PN 24 559 10-S) and the Dip stick was blown out and had cracked its cover.

Next weekend I will replace the damaged parts and change the oil and filter.

I'm hoping some of the more knowledgeable mechanics here might chime in with what else I need to look for, and need I need to check etc. before the weekend.

I will follow up with photos tomorrow.

Regards,
Chuck
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Old 07-14-2025, 11:13 AM
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Billy-O Billy-O is offline
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Toss a rod or burned a piston? Compression?
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.

MTD Products, Inc. of Cleveland, Ohio purchased the Cub Cadet brand from International Harvester in 1981. Cub Cadet was held as a wholly owned subsidiary for many years following this acquisition, which allowed them to operate independently. Recently, MTD has taken a more aggressive role and integrated Cub Cadet into its other lines of power equipment.

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