Question about Troy Bilt Tb70ss Gas Trimmer

1 Answer

Fix the flexible drive shaft has a problem

Troy-Bilt 791-182833 flexible drive shaft has a little medal clamp at the end where the cutter is and it has come loose. Everytime I go to start up the machine it works for a second and then the cutter stops spinning. Then when tilt the cutter toward the sky it slips back into gear. So how far up the drive shaft should I put that little clamp and how do I tighten it correctly so the drive shaft does not slip out of place? Thanks

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 134 Answers

The Metal Clamp referenced clamps directly on the end of the '2-Piece Gear Box Assembly'. The gear box assembly is an aluminum casting held together by 3 machine screws. The Metal Clamp does not actually lock the drive shaft housing into the gearbox assembly. The flexible drive shaft cable engages the engine output shaft, and the gear box assembly. This is a fixed length (non-adjustable) assembly.

First ensure that the drive shaft assembly is fully engaged at the quick connect fitting and that the "snap" is engaged. Then make sure the knob is fully tightened. The quick connect allows you to quickly switch between various attachments offered on this unit.

Now, based on your description, it sounds like the 'anti-rotation screw' 791-182519 has backed out or is gone. This will allow the entire cutting assembly (gearbox forward) to slip off of the drive shaft housing and disengage the flexible drive shaft. If your cutting assembly is attempting to rotate while in operation, or the drive is not engaged as you described.
Do not continue to operate the unit until you get this fixed as you could strip out the drive shaft end or cause other serious damage to the equipment or yourself.

If it is the anti-rotation screw, then make sure to push the drive shaft housing firmly into the gear box and ensure to align the holes in the drive shaft housing and the gear box. If the screw is lost, then find one similar sized, but be CERTAIN that it is not too long as it will actually engage the flexible drive shaft and prevent rotation, or cut the drive shaft.

Back to the clamp: If it is still wanting to move, then remove the lock nut and place slightly oversized washers on the bolt head and the lock nut. This will force more pressure (does not take much) on the clamp and will lock it down.

I just fixed mine today (071809) in fact and had to drill a new hole in the drive shaft housing as the original was completely wallowed out.

I hope this helps.

DROPNDEAL

Posted on Jul 19, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Troy-Bilt Pony TB 465SS need to lock shaft to remove bolt extender to replace head with brush cutter head. Please help & Thank you.


Simple solution. Contact Troy-Bilt company. I am sure customer service would be more than willing to help.

Jun 02, 2015 | Troy-Bilt Garden

1 Answer

Troy bilt 25cc head won't spin?


I have run onto several of the Troy-Bilt with this trouble. Seams the part of the head where the flex drive shaft fits into is weak and gives up. Unfortunately this part of the shaft housing isn't serviceable and the shaft will have to be replaced.

Aug 25, 2014 | Troy Garden

3 Answers

How do you fix the trimmer shaft if it won't spin?


simple answer is no if you can do it yourself then yes

Aug 15, 2014 | Troy Bilt Tb70ss Gas Trimmer

1 Answer

I have a troy bilt string weed cutter 27cc TB21Ec and need to know the oil gas ratio. I just read that it takes straight gas but my cap on the weed cutter where you put the gas says gas/oil mixture


Don't know that exact trimmer, but I always run 40:1 in all my trimmers, chainsaws, etc. That is 3.2 oz. of 2 cycle oil to one gallon of gasoline. I rebuild these machines daily and run that mix in everyting, except when it's actually specified on the machine.

Aug 11, 2011 | Troy-Bilt 4-Cycle Curve Shaft Gas String...

1 Answer

This is the second time in less than 1 1/2 years that the lower flexible drive shaft has broken. Any ideas?


My suggestion is to complain to Troy Bilt. The company is actively trying to increase it's market share and may be very willing to provide a new unit.

Sep 06, 2010 | Troy Bilt Tb425cs 26cc 4 - Cycle Curved -...

1 Answer

The flexible drive shaft broke near the bottom. I have removed it from the motor end and pulled out whats left of the shaft, but cannot figure out how to get to the broken end so that the flex shaft can be...


I believe what you need to do is remove the 3 screws on the trimmer head to remove the head from the lower shaft. After the head is off you can look down into where the shaft goes and be able to use some needlenose pliers or something of the sort to pull the broken part out.<!-- from fixya rte -->

Jul 06, 2010 | Troy Bilt Tb70ss Gas Trimmer

1 Answer

How do you change the cutter blade on the TB Chipper?


I just did one!
There are two opposing threaded holes next to the shaft.
Screw in bolts and use a wheel or gear puller to remove.
You can use a socket that fits in the center bore for an extention of your gear puller.
auttozone or ayto supply rents for free w/deposit

May 22, 2010 | Troy-Bilt Chipper Shredder

2 Answers

How do you get the head off the troy bilt string cutter? I'm try


If by "tearing it up" you mean that little retaining ring inside the main body of the head, that's correct. It must be destroyed to remove the main body.

Very very few of these trimmers can use a different mowing head without suffering damage to the gearbox, driveshaft or centrifugal clutch. (These are VERY LIGHT DUTY trimmers.)

As for the advice you seek:
"Don't run any other head on this unit with expectations of the trimmer holding up."

Troy-Bilt offers other attachments for this engine to use in performing other types of jobs.

At my shop we see a huge percentage of these units with failed drive shafts and gearboxes.

Probably not what you wanted to hear, but it's better than telling you the wrong thing and then you end up being unsatisfied with the solution I offered. I truly wish you good luck.

Hope this helps,
Dolf-

Oct 17, 2009 | Troy Bilt Tb70ss Gas Trimmer

1 Answer

Which way does the part with the little shaft that runs through it go over the needle valve with the spring on top? this is for the carburator on the tb2ocs troy-bilt trimmer. thanks! p.s i took out the...


spring goes under the alloy metering lever(has small dimple to locate it), top end of the needle fits in the forked end of the lever and shaft and screw hold it all down.

Jun 20, 2009 | Troy Bilt Tb70ss Gas Trimmer

3 Answers

Troy Built 6.75 Self Propelled to Slow


put oil or grease all the shafts and bearings inside and out, if possible adjust the cutter blade contacts.

May 20, 2009 | Troy Bilt 5.5hp Self Propelled Mower

Not finding what you are looking for?
Troy Bilt Tb70ss Gas Trimmer Logo

1,542 people viewed this question

Ask a Question

Usually answered in minutes!

Top Troy Garden Experts

Matt Olenzek
Matt Olenzek

Level 2 Expert

293 Answers

Mike Squire

Level 2 Expert

391 Answers

Tim Whalen

Level 3 Expert

3072 Answers

Are you a Troy Garden Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...