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Spacer-Driver

Part Number: 106-3999
ToroLawn Boy
Availability: 25+ in stock
Price: $3.30
Ships within 1 business day

*This part replaces obsolete part #: 105-3999.

Product Information
Manufacturer: Toro, Lawn Boy
Product Number: 106-3999
Classification: Part
Weight: 0.01 lbs.
Shipping: Ships Worldwide
Description:
This is an OEM replacement part for use with Toro lawnmowers. The special drive spacer sits on top of the blade driver assembly, to allow space between the drive shaft. This spacer is sold individually, please see model diagram for additional parts.
Frequently Purchased With
Compatibility

This part is compatible with the following machines:

Toro
20001 (240000001-240999999)(2004) Lawn Mower
20003 (250000001-250999999)(2005) Lawn Mower
20003 (260000001-260999999)(2006) Lawn Mower
20005 (250000001-250999999)(2005) Lawn Mower
20005 (260000001-260999999)(2006) Lawn Mower
20007 (240000001-240999999)(2004) Lawn Mower
20008 (230000001-230999999)(2003) Lawn Mower
20008 (240000001-240999999)(2004) Lawn Mower
20009 (230000001-230999999)(2003) Lawn Mower
20009 (240000001-240999999)(2004) Lawn Mower
20009 (250000001-250999999)(2005) Lawn Mower
20009 (260000001-260999999)(2006) Lawn Mower
20009 (270000001-270999999)(2007) Lawn Mower
20012 (230000001-230999999)(2003) Lawn Mower
20012 (240000001-240999999)(2004) Lawn Mower
20012 (250000001-250999999)(2005) Lawn Mower
20012 (260000001-260999999)(2006) Lawn Mower
20013 (230000001-230999999)(2003) Lawn Mower
20013 (240000001-240999999)(2004) Lawn Mower
20013 (250000001-250999999)(2005) Lawn Mower
20013 (260000001-260999999)(2006) Lawn Mower
20014 (230000001-230999999)(2003) Lawn Mower
20016 (230000001-230999999)(2003) Lawn Mower
20016 (240000001-240999999)(2004) Lawn Mower
20016 (250000001-250999999)(2005) Lawn Mower
20016 (260000001-260999999)(2006) Lawn Mower
20017 (230000001-230999999)(2003) Lawn Mower
20017 (240000001-240999999)(2004) Lawn Mower
20017 (250000001-250999999)(2005) Lawn Mower
20017 (260000001-260999999)(2006) Lawn Mower
20018 (230000001-230999999)(2003) Lawn Mower
20019 (230000001-230999999)(2003) Lawn Mower
20031 (240000001-240999999)(2004) Lawn Mower
20036 (230000001-230999999)(2003) Lawn Mower
20036 (240000001-240999999)(2004) Lawn Mower
20037 (230000001-230999999)(2003) Lawn Mower
20037 (240000001-240999999)(2004) Lawn Mower
20038 (230000001-230999999)(2003) Lawn Mower
20038 (240000001-240999999)(2004) Lawn Mower
20039 (230000001-230999999)(2003) Lawn Mower
20039 (240000001-240999999)(2004) Lawn Mower
20041 (250000001-250999999)(2005) Lawn Mower
20049 (250000001-250999999)(2005) Lawn Mower
20051 (240000001-240999999)(2004) Lawn Mower
20053 (270000001-270999999)(2007) Lawn Mower
20053 (260000001-260999999)(2006) Lawn Mower
20053 (250000001-250999999)(2005) Lawn Mower
20054 (250000001-250999999)(2005) Lawn Mower
20054 (260000001-260999999)(2006) Lawn Mower
20054 (270000001-270999999)(2007) Lawn Mower
20055 (250000001-250999999)(2005) Lawn Mower
20055 (260000001-260999999)(2006) Lawn Mower
20055 (270000001-270999999)(2007) Lawn Mower
20057 (250000001-250999999)(2005) Lawn Mower
20057 (260000001-260999999)(2006) Lawn Mower
20062 (270000001-270999999)(2007) Lawn Mower
20064 (270000001-270999999)(2007) Lawn Mower
20064 (280000001-280070155)(2008) Lawn Mower
20064 (280070156-280999999)(2008) Lawn Mower
20065 (270000001-270999999)(2007) Lawn Mower
20065 (280000001-280072441)(2008) Lawn Mower
20065 (280072442-280999999)(2008) Lawn Mower
20066 (270000001-270999999)(2007) Lawn Mower
20066 (280000001-280999999)(2008) Lawn Mower
20067 (270000001-270999999)(2007) Lawn Mower
20067 (280000001-280999999)(2008) Lawn Mower
20069 (270000001-270999999)(2007) Lawn Mower
20070 (260000001-260999999)(2006) Lawn Mower
20071 (270000001-270999999)(2007) Lawn Mower
20071A (270000001-270999999)(2007) Lawn Mower
20072 (270000001-270999999)(2007) Lawn Mower
20072A (270000001-270999999)(2007) Lawn Mower
20073 (270000001-270999999)(2007) Lawn Mower
20073A (270000001-270999999)(2007) Lawn Mower
20074 (270000001-270999999)(2007) Lawn Mower
20074A (270000001-270999999)(2007) Lawn Mower
20079 (260000001-260999999)(2006) Lawn Mower
20086 (280000001-280011041)(2008) Lawn Mower
20086 (280011042-280999999)(2008) Lawn Mower
20087 (280000001-280009000)(2008) Lawn Mower
20087 (280009001-280999999)(2008) Lawn Mower
20089 (280000001-280999999)(2008) Lawn Mower
20090 (280000001-280999999)(2008) Lawn Mower
20090 (290000001-290999999)(2009) Lawn Mower
20090C (280000001-280999999)(2008) Lawn Mower
20090C (290000001-290999999)(2009) Lawn Mower
20091 (280000001-280999999)(2008) Lawn Mower
20091C (280000001-280999999)(2008) Lawn Mower
20092 (280000001-280999999)(2008) Lawn Mower
20092 (290000001-290999999)(2009) Lawn Mower
20092 (310000001-310020057)(2010) Lawn Mower
20092 (310020238-310999999)(2010) Lawn Mower
20092C (280000001-280999999)(2008) Lawn Mower
20092C (290000001-290999999)(2009) Lawn Mower
20092C (310000001-310999999)(2010) Lawn Mower
20094 (270000001-270999999)(2007) Lawn Mower
20095 (280000001-280999999)(2008) Lawn Mower
20095 (290000001-290999999)(2009) Lawn Mower
20095 (310000001-310004268)(2010) Lawn Mower
20095 (310004923-310999999)(2010) Lawn Mower
20095C (280000001-280999999)(2008) Lawn Mower
20095C (290000001-290999999)(2009) Lawn Mower
20095C (310000001-310999999)(2010) Lawn Mower
20096 (270000001-270999999)(2007) Lawn Mower
20098 (270000001-270999999)(2007) Lawn Mower
20099 (280000001-280999999)(2008) Lawn Mower
20099 (290000001-290999999)(2009) Lawn Mower
20099 (310000001-310000309)(2010) Lawn Mower
20110 (280000001-280001676)(2008) Lawn Mower
20110 (290000001-290999999)(2009) Lawn Mower
20111 (280000001-280001951)(2008) Lawn Mower
20111 (280001952-280999999)(2008) Lawn Mower
20111 (290000001-290999999)(2009) Lawn Mower
20112 (280000001-280999999)(2008) Lawn Mower
20112 (290000001-290999999)(2009) Lawn Mower
20113 (280000001-280999999)(2008) Lawn Mower
20113 (290000001-290999999)(2009) Lawn Mower
20192 (290000001-290999999)(2009) Lawn Mower
20192 (310000001-310999999)(2010) Lawn Mower
20330 (290000001-290999999)(2009) Lawn Mower
20330 (310000001-310008917)(2010) Lawn Mower
20330 (310008918-310999999)(2010) Lawn Mower
20330C (290000001-290999999)(2009) Lawn Mower
20330C (310000001-310999999)(2010) Lawn Mower
20331 (290000001-290999999)(2009) Lawn Mower
20331 (310000001-310006219)(2010) Lawn Mower
20331 (310006220-310999999)(2010) Lawn Mower
20331C (290000001-290999999)(2009) Lawn Mower
20331C (310000001-310999999)(2010) Lawn Mower
20332 (290000001-290999999)(2009) Lawn Mower
20332 (310000001-310999999)(2010) Lawn Mower
20332C (290000001-290999999)(2009) Lawn Mower
20332C (310000001-310999999)(2010) Lawn Mower
20334 (290000001-290999999)(2009) Lawn Mower
20334 (310000001-310999999)(2010) Lawn Mower
20334C (290000001-290999999)(2009) Lawn Mower
20334C (310000001-310999999)(2010) Lawn Mower
20338 (310000001-310999999)(2010) Lawn Mower
20350 (290000001-290999999)(2009) Lawn Mower
20350 (310000001-310001316)(2010) Lawn Mower
20350 (310001317-310999999)(2010) Lawn Mower
20351 (290000001-290999999)(2009) Lawn Mower
20351 (310000001-310002364)(2010) Lawn Mower
20351 (310002365-310999999)(2010) Lawn Mower
20352 (290000001-290999999)(2009) Lawn Mower
20352 (310000001-310999999)(2010) Lawn Mower
20636 (270J00001-270J99999)(2007) Lawn Mower
20636 (280J00001-280J99999)(2008) Lawn Mower
20636 (290000001-290999999)(2009) Lawn Mower
20637 (270K00001-270K99999)(2007) Lawn Mower
Expand the 150+ compatible machines
Products Compatibility

This item works with the following types of products:

  • • Lawn Mower
Questions & Answers

No questions have been asked yet
Repair Instructions: Submitted by Customers Like You
Tool Type:
Lawn Mower
Parts Used:
Blade Driver Asm - 106-3987
Spacer-Driver - 106-3999
Repair Difficulty:
Medium
Time Spent Repairing:
15-30 minutes
Tools Used:
Socket set, 32oz hammer
Blade drive assembly
Ruptured drive assembly after running over a well hidden tree stump. Quarter size hole where the keyway used to be. Had to beat the thing with a 32oz
hammer like a mad because of short stroke clearance. ( yes I tried prying with 2x4 and crowbar, dont own a puller big enough). Upon removal I inspected and cleaned the shaft then lubricated it with greaseless spray, inserted the spacer into new drive and aligned the key way and it pushed on about an inch before it stopped cold, placed 2x4 on drive and hit it with aforementioned 32oz hammer like it owed me money, and drive slid right on. Hooked belt and installed blade in the usual way and righted the mower. Let the mower sit for a couple of hours to allow oil to settle, checked oil and gas then cut the grass. BTW pull the plug wire whenever I work on blade end stuff and use cardboard to catch any fluid when turned on side. All in all a $42 repair job on an 8 year old mower beats $400 for a new one.
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Tool Type:
Lawn Mower
Parts Used:
Blade Driver Asm - 106-3987
Spacer-Driver - 106-3999
Bolt-Blade - 125-2466
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Screwdriver, Wrench Set
Blade driver became loose because of a loose bolt and damaged the blade driver assembly and blade bolt.
The new parts were installed (slipped on) very easily. The lawn mower now works and I just mowed the front and back yards.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Tool Type:
Lawn Mower
Parts Used:
Blade Driver Asm - 106-3987
Spacer-Driver - 106-3999
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Socket set
Blade driver asm broke. Went to sharpen lawn mower and realized spacer-driver was broke and blade driver assembly was broke.
1. Put new parts on with the blade that I had sharpened. Changed oil. Every thing went fine.
Parts diagram for replacement parts was a great help.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Tool Type:
Lawn Mower
Parts Used:
Spacer-Driver - 106-3999
Bolt-Blade - 125-2466
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Power Drill, Socket set, Rubber mallet
Accelerator blade broken, needed to replace
1. Turned on side with oil cap/stick off, dumped oil in container.
2. Took plug wire off plug
3. Used large screwdriver as blade stop, and 1/2 in ratchet with I believe 5/8 socket, tapped with mallet to loosen.
4. R n R, including oil.
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Thanks for voting and helping fellow customers!
Reviews
5
Average Rating (out of 5):
2 Reviews
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  • Just like the other parts I ordered together everything fit together was easy to order for a complete rebuild of the mower.
    Parts showed up in good condition. Delivery was fast. The biggest thing for me was ordering. Was great to have the Dwg. With all the other parts that was needed to complete the job.
    Guest - October 25, 2022 Verified Purchase
    The Right Fit
    First thing great shipping the web site was excellent easy to use it made my search for the part easy an the part that I ordered was the perfect fit an it doesn’t get any better than that.
    Guest - April 8, 2020 Verified Purchase
    Verified Purchase
    eReplacementParts Team
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    Product Information
    Manufacturer: Toro, Lawn Boy
    Product Number: 106-3999
    Classification: Part
    Weight: 0.01 lbs.
    Shipping: Ships Worldwide

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