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Old 05-15-2018, 10:33 PM
machinehead323 machinehead323 is offline
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Join Date: Apr 2012
Location: Texas
Posts: 194
Default K341 cam and head replacement

I rebuilt my K341 93 hours ago. While mowing this last time it seemed sluggish while mowing and i started tweaking the carb. Well I shut it off and it never started again. I checked the timing and it was all wonky with the marks. Long story short the engine is out now. The head gasket is toast, several of the bolts were loose. There was nothing blocking airflow. The flywheel key was sheared. Iím pretty sure I put antiseze on the tapered surface fore ease of removal. Obviously didn't read that part in the manual. It had been starting hard for a little while now. So I checked the ACR and it was at .023 instead of the .031-.041 I knew the tab on my cam was the hardened unadjustable type but I tried anyway. Well it snapped so I am getting an older cam that is adjustable. Now for a couple questions

I donít know if I trust the head bolts. Is it ok to use the same size grade 8 bolts with the thick washers? I will be lapping the head on a surface plate. I hear some people using sealers on the gasket. Any truth to that? After torqueing it down and I get it started again what is the best run in/retorque procedure?

I know I have to take the crank out to get the cam out. Can I just get the piston at TDC and remove the endcap and be able to get the crank out? I would rather not remove the piston and rod if I donít have to. Can I leave the valves in and be able to get the cam out? Or should I go ahead and pull the valves while Iím at it and relap them. I had the seats redone and new valves only 93 hrs ago.

Retorquing the rod cap scares me. IDK why I just have fears of it coming loose. The manual calls for oil on the threads and 200in lbs for used posi-lock nuts. Is that all there is to it? No locktite or anything?

I think that is all the questions for now.
__________________
1979 1650, #1 tiller with one extension, 90 degree box mounted, 3 point. 1961 4 digit bringing back to life. I have the mower and 3 pint for it. The 1650 is the fastest mower in the neighborhood.
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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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