Late model B7100 hst throwout bearing grease question

ken erickson

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Equipment
B7100 hst, 2650 front mount snowblower, L2501 hst qa loader
Nov 21, 2010
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Waupaca Wisconsin
I have a 1997 B7100 hst and there is no mention in my owners manual of greasing the throwout bearing. The red arrow points to a hole in the frame that gives access to a grease zirk. I do not have a workshop manual, perhaps it is covered in it.
Can someone confirm this is indeed a grease zirk for throwout bearing?
If so, how often (hours) should I be greasing and how much? I have been once a year , one or two pumps of my manual grease gun.

If this does not grease the throwout bearing what have I been greasing? Lol

Thanks in advance for any thought or advice.
 

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North Idaho Wolfman

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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
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Sandpoint, ID
I have a 1997 B7100 hst and there is no mention in my owners manual of greasing the throwout bearing. The red arrow points to a hole in the frame that gives access to a grease zirk. I do not have a workshop manual, perhaps it is covered in it.
Can someone confirm this is indeed a grease zirk for throwout bearing?
If so, how often (hours) should I be greasing and how much? I have been once a year , one or two pumps of my manual grease gun.

If this does not grease the throwout bearing what have I been greasing? Lol

Thanks in advance for any thought or advice.
It does not grease the throw out bearing, it only greases the tube that the fork moves to engage the throw out bearing.
And one squirt about every 5 years would be fine for an HST that only uses the clutch for Starting and PTO operations.

It needed greased way more when it was geared and used in rice fields. ;)
 

ken erickson

Well-known member

Equipment
B7100 hst, 2650 front mount snowblower, L2501 hst qa loader
Nov 21, 2010
1,147
1,855
113
Waupaca Wisconsin
It does not grease the throw out bearing, it only greases the tube that the fork moves to engage the throw out bearing.
And one squirt about every 5 years would be fine for an HST that only uses the clutch for Starting and PTO operations.

It needed greased way more when it was geared and used in rice fields. ;)
Thank you! I will back off on every spring.
 

D2Cat

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L305DT, B7100HST, TG1860, TG1860D, L4240
Mar 27, 2014
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40 miles south of Kansas City
Ken, you pump too much grease and it ends up in the clutch housing and eventually on the clutch disc, which creates problems.

Visualize a piece of pipe that slides on a shaft, and the pipe has a grease fitting on the side. The grease just makes sure the "pipe" can slide on the shaft. No extra needed. As mentioned, no grease gets into the throw out bearing.