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Old 03-28-2011, 02:41 PM
cub_fan cub_fan is offline
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Join Date: Jan 2011
Location: Virginia
Posts: 3
Default 1641 electric PTO problem

I recently acquired a 1641 which has a problem with the electric PTO for the mower deck. Over the weekend, I removed the deck, sharpened the blades and
greased all of the spindles. Then I readjusted the PTO air gap to 0.017" per the owners manual.
With the deck off, the PTO comes on and seems to spin OK. When I put the deck back on and engaged the PTO, the engine stalls (at full throttle).
I played around with the mower drive belt tension but it did not make any difference. Next, I released the drive belt idler ratchet so there was a fair amount of slack in the belt. When I tried the PTO, the belt would turn and spin the mower blades but one or more of the spindles was squealing moderately loud.
So, do this mean I have a spindle problem. When I had the deck off all of the
spindles seemed to turn ok. I'd appreciate your thoughts on this.
Thanks.
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Old 03-28-2011, 03:55 PM
Matt G.'s Avatar
Matt G. Matt G. is offline
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Join Date: Mar 2009
Location: Wichita, KS
Posts: 5,661
Default

Check all of the idler pulleys and the spindles...I'm guessing one of them is going to turn hard.

The way you worded your post, it sounds like you are engaging the PTO clutch at full throttle. Don't do that...the clutch will have a short life.
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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.

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