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Old 08-03-2013, 07:48 PM
sawdustdad's Avatar
sawdustdad sawdustdad is offline
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Join Date: Dec 2012
Location: USA
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Default 108 overheat? smoking from breather cover.

I restored this 108 last winter and paid the local Case/IH dealer to overhaul the engine. Piston, rings, rod, valves. Cylinder was in spec (they said) so standard piston and rings were installed.

I put it all back together and have been using it all summer, cutting an acre or so every week. Engine seems stronger than it used to be, so I've been happy.

Until last week. After cutting for half an hour (heavy grass, working hard) the engine started to lose power and blowing lots of smoke out of the breather cover. Seems like the engine was working hard, but going nowhere, slowing down, but at full throttle. Barely finished cutting the grass, and put it away, not sure what was going on with it.

Today (a week later), it started fine, ran great for about a half hour (again, thick grass, but cutting it fine) and it started doing it again--losing power and smoking from the breather cover. So I shut it down. Went to go get the 1650 from the other house a few hours later to finish cutting the grass. Went to put the 108 on the trailer to bring home to fix. It started fine, no smoking, so I put it on the trailer. Now I have it home, so looking for ideas on where to start. Is it overheating? Or something else.
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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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