This is a genuine OEM sourced replacement part designed to work with string trimmers. This part is attached to the lower boom assembly and it is what drives/spins the trimmer head. It is secured to the unit with two (2) screws. Internal gears or the gear box are not sold separately. This assembly includes the trimmer head. To complete this repair you will need a screwdriver.
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★★★★★
★★★★★
They sell what you ask, worked perfectly
It was in excellent conditions, it works my money
Guest - May 7, 2019
Verified Purchase
★★★★★
★★★★★
works perfect thanks
on time every time
Guest - May 28, 2019
Verified Purchase
★★★★★
★★★★★
Was a easy switch
Speedy response came in new condition
Guest - July 30, 2019
Verified Purchase
★★★★★
★★★★★
Easy Repair
This was exactly what I needed to repair my weed trimmer, & at a much more affordable price than local repair shops. Trimmer works great now! I will definitely shop here in future.
Guest - May 13, 2020
Verified Purchase
★★★★★
★★★★★
Easy repair, Id order again in a second
There was really nothing wrong with my trimmers gearbox, but the entire bump head assembly was worn and needed replacing. Ordering this included all of the parts for both the gearbox and the bump head (even came preloaded with trimmer line). All I needed to do was unscrew 3 screws, slide on the assembly and the tighten 3 new screws. Definitely the way to go! Shipping was quick 4 days (even during COVID) and buying the full assembly this was cost about half as much as ordering the individual replacement parts.
Guest - June 8, 2020
Verified Purchase
★★★★★
★★★★★
Easy repair
exactly what I needed, fit perfectly, works perfect.
Paul - November 2, 2021
Verified Purchase
★★★★★
★★★★★
Thank You
Thank you parts is working Great in my Weed eater
Guest - May 27, 2022
Verified Purchase
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It was an easy fix. Philips screw driver. Three screws to take gear box off the shaft, and three screws to put the new one on, and tighten the screws up. Good as new.
Removed the screws securing the defective gearbox from the lower shaft and removed it. Then simply slid the new gearbox on the shaft and used the screws, included with it to secure it to the lower shaft.
Unscrewed the old one and pulled off the shaft. Pushed the new one the onto shaft and tightens down with new screws that were provided the with gear box. Very easy to do.
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Trimmer was erratic, off-balance, jumpy. With the motor off, spinning the end by hand, you could feel a bearing was bad.
Unscrewed the old gear box and screwed the new one on...worked fine, plus I like the lighter string that came with it. Been using .095 but the 080 feels smoother. Then I ordered two new sealed bearings from and installed them in the old gearbox, so I have a spare.
Quick and simple install. My son just unscrewed the old gear box assembly, placed the new assembly on and screwed it in place. All hardware was included in the package.
Bearings in old gear box that holds the trimmer head went out fairly fast. Bought the gear box assembly and it\'s 3 star bit screws to remove the old one and also to install the new one. Upon removing the old one I opened it up and noticed there was only a small amount of grease in the assembly. When the new one came in I opened it as wel
... Read morel to make sure the little bearings had grease in them and they didn\'t. That makes since as to why the old ones didn\'t last so long. I removed the new bearings and packed them with grease as best as I could. Moral of the story is bearings need some type of grease or they wear out quickly. Easy fix as far replacing the trimmer gear box goes but you might need a little experience on packing the bearings with grease.
Unscrewed three screws holding the gear box, then removed it. Screw the new gear box on with the threes screws you get with the new part, and you are done.
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bearing in trimmer head( for lack of grease from manufactor caused bearing to seeze.)..
1 Remove set screw, loosen the other two gear box screws on the shaft side.
2 pull the old gear box assembly off the shaft.
3 slide on new gearbox assembly,align with driveshaft, tighten screws.
The new bump head already has line on it.
Done!!! Back to new bump head performance
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Mail-In Recycling Rebate
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
_WW_2.gif "Part Location Diagram of 753-06165 MTD Gearbox Assembly (includes 15-20)")
_WW_2.gif "Part Location Diagram of 753-06165 MTD Gearbox Assembly (includes 15-20)")
