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Troy-Bilt TB70SS (41ADT70C711) Gas Trimmer

Troy-Bilt TB70SS (41ADT70C711) Gas Trimmer Parts

Page A
Page B
Page A
 Fig #
A1
Throttle Housing Assembly (includes 2-3)
 $4.78

Part Number: 753-04829

In Stock, 5 Available

Ships within 1 business day
Note: (Incl. Ref No. 2-4)
 $4.78
A2
Throttle Trigger
 $4.77

Part Number: 753-04119

In Stock, 25+ Available

Ships within 1 business day
 $4.77
A3
Throttle Trigger Spring
 $5.08

Part Number: 791-182690

In Stock, 25+ Available

Ships within 1 business day
 $5.08
A4
Throttle Cable Assembly
 $5.22

Part Number: 753-04405

In Stock, 7 Available

Ships within 1 business day
 $5.22
A5
Upper Drive Shaft and Housing Assembly (Shaft is 25-1/8
 $57.83

Part Number: 753-04344

In Stock, 25+ Available

Ships within 1 business day
Note: 2008 & Before
 $57.83
A6
Shoulder Harness Clamp
 $20.81

Part Number: 791-610327

Ships In 7 - 13 Business Days

Ships in 7 - 13 business days
 $20.81
A7
Loop Handle Assembly
 
No Longer Available [ More Info ]

Part Number: 791-180869

Discontinued

Not Available
Note: (Incl. Ref No. 8-10)

A8
Screw
 $2.87

Part Number: 791-181070

Ships In 7 - 13 Business Days

Ships in 7 - 13 business days
 $2.87
A9
Deluxe D-Handle
 $56.16

Part Number: 791-182167

Ships In 7 - 13 Business Days

Ships in 7 - 13 business days
 $56.16
A10
Bottom Clamp
 
No Longer Available [ More Info ]

Part Number: 791-182168

Discontinued

Not Available

A11
Drive Shaft Coupler
 $14.95

Part Number: 753-1190

In Stock, 25+ Available

Ships within 1 business day
Note: (Incl. 11)
 $14.95
A12
Screw
 $3.99

Part Number: 791-182057

In Stock, 25+ Available

Ships within 1 business day
Note: 2 Piece Gearbox Assembly Parts - Item 15
 $3.99
A13
Bolt
 $3.99

Part Number: 791-181617

In Stock, 22 Available

Ships within 1 business day
Note: 2 Piece Gearbox Assembly Parts - Item 15
 $3.99
A14
Adjustment Knob
 $5.03

Part Number: 697-00661-9

In Stock, 25+ Available

Ships within 1 business day
Note: (Includes 13)
 $5.03
A15
Knob Retaining Nut
 $3.99

Part Number: 791-181886

In Stock, 5 Available

Ships within 1 business day
Note: 2 Piece Gearbox Assembly Parts - Item 15
 $3.99
A16
Boom Outer Housing 24" (Cable Sold Separatley)
 $35.61

Part Number: 753-04089

In Stock, 2 Available

Ships within 1 business day
 $35.61
A17
Lower Flexible Drive Shaft
 $21.79

Part Number: 791-181166

In Stock, 25 Available

Ships within 1 business day
Note: 24 9/16
 $21.79
A18
Upper Clamp Assembly
 $11.38

Part Number: 791-153597

In Stock, 6 Available

Ships within 1 business day
Note: (Includes 19)
 $11.38
A19
Anti-Rotation Screw
 $6.56

Part Number: 791-145569

In Stock, 25+ Available

Ships within 1 business day
 $6.56
A20
Gearbox Assembly
 
No Longer Available [ More Info ]

Part Number: 791-180549

Discontinued

Not Available
Note: (Includes 15 & 16)

A21
Guard Mounting Screw Assembly
 $6.28

Part Number: 791-180547

In Stock, 1 Available

Ships within 1 business day
 $6.28
A22
Guard and Blade Assembly
 
No Longer Available [ More Info ]

Part Number: 791-180548

Discontinued

Not Available
Note: (Includes 6)

A23
Blade Assembly
 $10.16

Part Number: 791-682061

In Stock, 21 Available

Ships within 1 business day
 $10.16
A24
Outer Spool Assembly w/ Retainer
 $21.69

Part Number: 791-153619

In Stock, 16 Available

Ships within 1 business day
Note: (Includes 20)
 $21.69
A25
Retainer
 $3.99

Part Number: 791-610660

In Stock, 25+ Available

Ships within 1 business day
 $3.99
A26
Spring
 $7.09

Part Number: 791-610317B

In Stock, 25+ Available

Ships within 1 business day
 $7.09
A27
Inner Reel
 $18.23

Part Number: 753-1155

In Stock, 25+ Available

Ships within 1 business day
Note: (Line Not Included)
 $18.23
A28
Bump Head Knob
 $11.27

Part Number: 791-153066B

In Stock, 25+ Available

Ships within 1 business day
 $11.27
A29
Switch
 $6.95

Part Number: 791-182405

In Stock, 25+ Available

Ships within 1 business day
Note: (Incl. Ref No. 6)
 $6.95
A
Replacement Line, 0.095 Diameter
 
No Longer Available [ More Info ]

Part Number: 791-180120

Discontinued

Not Available

A
Reel And Line Assembly
 $25.92

Part Number: 953-1156

In Stock, 25+ Available

Ships within 1 business day
 $25.92
A
Shoulder Strap
 $27.79

Part Number: 791-682075B

In Stock, 10 Available

Ships within 1 business day
 $27.79
Page B
 Fig #
B1
Air-Cleaner Cover Assembly (includes 2 & 30)
 $17.34

Part Number: 753-04810

Ships In 7 - 13 Business Days

Ships in 7 - 13 business days
 $17.34
B2
Air Cleaner Filter
 $6.84

Part Number: 791-180350B

In Stock, 25+ Available

Ships within 1 business day
 $6.84
B3
Carburetor Mounting Screw
 
No Longer Available [ More Info ]

Part Number: 791-180351

Discontinued

Not Available

B4
Choke Lever
 
No Longer Available [ More Info ]

Part Number: 753-04227

Discontinued

Not Available

B5
Choke Lever and Plate
 
No Longer Available [ More Info ]

Part Number: 753-04419

Discontinued

Not Available
Note: (Includes 6)

B6
Carburetor Assembly
 $65.69

Part Number: 753-04338

In Stock, 20 Available

Ships within 1 business day
Note: (Includes 7 & 18)
 $65.69
B7
Carburetor Gasket
 $3.99

Part Number: 791-610675

In Stock, 25+ Available

Ships within 1 business day
 $3.99
B8
Carb Mount Screw
 
No Longer Available [ More Info ]

Part Number: 791-181860

Discontinued

Not Available

B9
Primer and Hose Assembly
 $14.49

Part Number: 791-683974B

In Stock, 25+ Available

Ships within 1 business day
 $14.49
B10
Carb Mount Assembly
 $30.36

Part Number: 753-1196

In Stock, 1 Available

Ships within 1 business day
Note: (Includes 10, 13 & 14)
 $30.36
B11
Reed Assembly
 $7.74

Part Number: 791-684451

In Stock, 13 Available

Ships within 1 business day
 $7.74
B12
Crankcase Cover Gasket
 $12.00

Part Number: 753-1208

In Stock, 25+ Available

Ships within 1 business day
 $12.00
B13
Crank Case
 $100.27

Part Number: 753-04401

Ships In 7 - 13 Business Days

Ships in 7 - 13 business days
 $100.27
B14
Rear Mounting Pad
 
No Longer Available [ More Info ]

Part Number: 791-612134

Discontinued

Not Available

B15
Fuel Tank Assembly
 
No Longer Available [ More Info ]

Part Number: 753-04307

Discontinued

Not Available
Note: (Incl. Ref No. 16-18)

B16
Fuel Cap
 $14.43

Part Number: 753-04084

In Stock, 5 Available

Ships within 1 business day
 $14.43
B17
Fuel Return Line
 $4.97

Part Number: 791-181086

In Stock, 25+ Available

Ships within 1 business day
 $4.97
B18
Fuel Line Assembly
 $13.67

Part Number: 753-04233

In Stock, 25+ Available

Ships within 1 business day
 $13.67
B19
Front Mounting Pad
 
No Longer Available [ More Info ]

Part Number: 791-145308

Discontinued

Not Available

B20
Shroud Extension and Stand
 $21.65

Part Number: 753-04702

Ships In 7 - 13 Business Days

Ships in 7 - 13 business days
Note: (Includes 34)
 $21.65
B21
Flywheel Assembly
 $49.13

Part Number: 753-05240

In Stock, 7 Available

Ships within 1 business day
 $49.13
B22
Spacer
 $11.25

Part Number: 791-181525

In Stock, 4 Available

Ships within 1 business day
 $11.25
B23
Recoil Pulley Assembly
 $21.11

Part Number: 753-04823

In Stock, 25+ Available

Ships within 1 business day
Note: (Incl. Ref. No. 24)
 $21.11
B24
Recoil Spring
 $23.56

Part Number: 753-04286

In Stock, 25+ Available

Ships within 1 business day
 $23.56
B25
Rope Guide
 $8.15

Part Number: 753-1200

Ships In 7 - 13 Business Days

Ships in 7 - 13 business days
 $8.15
B26
Palnut
 $7.00

Part Number: 753-04288

In Stock, 17 Available

Ships within 1 business day
 $7.00
B27
Pull Handle
 $3.99

Part Number: 631-04164B

In Stock, 15 Available

Ships within 1 business day
 $3.99
B28
Rope
 $12.54

Part Number: 791-613103

In Stock, 25 Available

Ships within 1 business day
 $12.54
B29
Pressure Plate Assembly
 $11.15

Part Number: 753-04417

Ships In 7 - 13 Business Days

Ships in 7 - 13 business days
 $11.15
B30
Screw
 $7.24

Part Number: 753-1202

In Stock, 1 Available

Ships within 1 business day
 $7.24
B31
Starter Housing Assembly
 $45.82

Part Number: 753-04402

In Stock, 8 Available

Ships within 1 business day
 $45.82
B32
Housing Screw
 $2.99

Part Number: 791-181862

In Stock, 20 Available

Ships within 1 business day
 $2.99
B33
Clutch Washer
 $3.99

Part Number: 9162-1

In Stock, 8 Available

Ships within 1 business day
 $3.99
B34
Small Clutch Assembly
 $16.85

Part Number: 753-05860

In Stock, 25+ Available

Ships within 1 business day
Note: New version.
 $16.85
B35
Clutch Drum
 $34.80

Part Number: 791-153592

In Stock, 25+ Available

Ships within 1 business day
Note: Does Not Come With Clutch Assembly
 $34.80
B36
Clutch Cover Assembly (includes 37-40)
 
No Longer Available [ More Info ]

Part Number: 753-1204

Discontinued

Not Available

B37
Cover Screw
 $2.80

Part Number: 791-181345

In Stock, 25+ Available

Ships within 1 business day
 $2.80
B38
Anti-Rotation Screw
 $3.99

Part Number: 791-182519

In Stock, 25+ Available

Ships within 1 business day
 $3.99
B39
Clamping Screw
 $7.34

Part Number: 9689A

In Stock, 1 Available

Ships within 1 business day
 $7.34
B40
L-Nut #10-24 Thd.
 $3.00

Part Number: 712-0161

In Stock, 2 Available

Ships within 1 business day
Note: (Not Shown)
 $3.00
B41
Wire Leads and Sleeve
 
No Longer Available [ More Info ]

Part Number: 791-182798

Discontinued

Not Available

B42
Ground Tab
 
No Longer Available [ More Info ]

Part Number: 791-611063

Discontinued

Not Available

B43
Module Assembly (Mfg Date Before 6/21/05)
 $72.83

Part Number: 753-04336

In Stock, 7 Available

Ships within 1 business day
 $72.83
B44
Spark Plug
 $10.09

Part Number: 791-610311B

In Stock, 25+ Available

Ships within 1 business day
Note: Contents of 38cc Shortblock Asy, Pn 301284
 $10.09
B45
Muffler Assembly
 $78.01

Part Number: 753-05169

In Stock, 25+ Available

Ships within 1 business day
Note: (Includes 40-45)
 $78.01
B46
Exhaust Gasket
 $6.44

Part Number: 753-04619

In Stock, 17 Available

Ships within 1 business day
 $6.44
B47
Spark Arrestor Screen
 
No Longer Available [ More Info ]

Part Number: 753-04689

Discontinued

Not Available

B48
Plate
 
No Longer Available [ More Info ]

Part Number: 753-04690

Discontinued

Not Available

B49
Hood
 
No Longer Available [ More Info ]

Part Number: 753-04691

Discontinued

Not Available

B50
Screw
 $1.72

Part Number: 710-04162

Ships In 7 - 13 Business Days

Ships in 7 - 13 business days
 $1.72
B51
Muffler Mounting Bolt Assembly
 $2.99

Part Number: 710-04188A

In Stock, 1 Available

Ships within 1 business day
 $2.99
B52
Cylinder Assembly
 $53.59

Part Number: 753-04814

Ships In 7 - 13 Business Days

Ships in 7 - 13 business days
Note: (Includes 47 & 49)
 $53.59
B53
Piston and Rod Assembly
 $45.58
No Longer Available [ More Info ]

Part Number: 753-04367

In Stock 4 Available

Ships within 1 business day
 $45.58
B54
Cylinder Gasket
 $10.96

Part Number: 753-04182

In Stock, 1 Available

Ships within 1 business day
 $10.96
B55
Crankcase Bolt
 $3.00

Part Number: 791-182723

In Stock, 19 Available

Ships within 1 business day
 $3.00
B
Piston Rings (2 included)
 $35.69

Part Number: 753-1209

In Stock, 9 Available

Ships within 1 business day
Note: Not Shown
 $35.69
B
Short Block Assembly (includes 8, 13,& 52-55)
 $146.13

Part Number: 753-04812

Ships In 7 - 13 Business Days

Ships in 7 - 13 business days
 $146.13
B
Clutch Springs (Qty. 2)
 $7.03

Part Number: 791-181599

In Stock, 22 Available

Ships within 1 business day
 $7.03
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Discussion
Discussion for the Troy-Bilt TB70SS (41ADT70C711) Gas Trimmer

Discussion is closed. To ask our experts a question about a part, use the Q&A feature on our product pages.
Question: Part # 753-05183 Gear Box Assemb...

megadotman

I have this gear box assembly and want to know what other gas trimmer models will it fit on, besides Troy Built TB70SS trimmer and the YardMan YM70SS. Can anyone find a list or knows? I am trying to find any used trimmers that this particular gear box will fit on. Thanks.
Hello megadotman You are needing a compatibility list for a trimmer part. If you can go to the gearhead part on THIS site; isolate it and click on it the machines it is compatible with will be shown below the description of it. That list is not the end all be all, but it is usually pretty accurate.
Question: Wt827a Carb - Followed Your Vide...

rastoma

I followed Mark's excellent youtube video on rebuilding a 2 cycle carb. I have the wt827a and followed the video step by step. Did it here at the computer and paused between each step. So the procedure went very smoothly.

Though, after re-installing the carb. the trimmer won't start. Gas builds up and vapor locks and I can't pull the cord any more until I remove the plug and drain the gas. I've changed plugs, cleaned the plug, but it won't fire now. Any thoughts?

I've double checked the fuel line routes and they are correct.

Before the rebuild, the trimmer started and would idle but would die as soon as you give it gas. So I figured the rebuild would fix it. The gaskets and valve were very dry and brittle.

After reinstalling, it won't even attempt to fire.

Just double checked to make sure I have spark. Tip of plug showing a nice bright blue spark.

Gas just pours out of the engine when I remove the plug.

I removed carb again, snugged the 4 screws on the one side. In the video it looked like Mark didn't use a lot of torque on those screws. So the first time I think they were not tight enough. With moderate strength, they snugged just a bit (no technical measurement for what a bit is, but it was enough to feel movement until they stopped. Though this is the first time I've rebuilt a 2 cycle carb., I am fairly mechanically inclined and have a 'feel' for proper torque when dealing with aluminum threads). But maybe I'm being too cautious. Should I tighten more?

With the carb off, I pressed the primer bulb and fuel came out one of the holes on the side of the carb that mounts to the engine.

But it seems like it just keeps pouring out like a siphon.

Before the carb rebuild, I replaced all fuel lines and the filter, and new primer bulb. One of the lines was blocked as it didn't run at all before. So I replaced the lines, and the trimmer started great. But as mentioned it just immediately died when giving any amount of gas.

This all started because I left it full of gas over the winter (regular gas with ethanol on top of that). I've learned my lesson about that mistake. Just need to get this jungle under control and can't afford another trimmer right now.
I posted the above earlier in a wrong forum. So it's been awhile since I actually did the above steps.

Just a few minutes ago I went through everything. Removed the carb, took it apart again. Everything looks exactly as it should, according to following the video.

I took the muffler off and gas poured out of it.. a LOT. Still getting spark. Won't attempt to fire. Every time I remove the plug it's dripping wet. I don't see any leaks in the fuel lines.
You are experiencing severe flooding. The adjustment of the metering valve lever that opens and closes the needle valve to let fuel into the carburetor is crucial. The least little bit of debris under the needle will hold it open and the fuel will flow nonstop. Faulty check valves in the carb will allow fuel to go places it is not supposed to. Also make sure the small micro fine screen inside the carb body is clean. Below it is the needle as you probably observed. I understand you rebuilt it and I know the process, but something is not right. Make sure the metering diaphragm (under the 4 screw cover) is on TOP of the gasket, not right next to the carb body. That would keep the metering lever pushing the needle open all the time, flooding the engine. On the other side of the carb, the fuel pump diaphragm DOES go directly against the carb body. Post back after rechecking your assembly order.
Been fooling with this trimmer on and off for the last 3 weeks. Finally found what I had been missing every time. I used the wrong reed valve. I am so thrilled and ticked off at the same time... ticked that I missed something so simple but crucial.

So, put everything back together today and after priming and pull the crank on position one, I switched to position 2 and the trimmer fired up as easier and smooth as it ever has. Let it run 30 seconds or so and moved to choke to position 3. Engine still idling like a new one. I can give it about 1/3 throttle and it speeds up, smooth and great. 1/3 is not power enough to actually cut any weeds though.

But as soon as I go past 1/3 throttle it starts to die. ARRRRrrrrggghhhhhh!!!!

I know everyone's main thought is go buy a new one. I just can't right now. I'm not working right now (looking of course) and just don't have the money to buy another one.

I know the carb has to be clean as many times I took it apart. I sprayed carb cleaner with through every hole that's accessible and I just don't see how there could be any clogs. I double checked the needle and spring.

Could an incorrect or fouled spark plug cause this behavior? Running smooth at idle and smooth with partial throttle but die on higher throttle?

I can't find the Troy-Bilt TB70SS in any reference chart at any parts store, Lowes, Home Depot or Tractor Supply for the correct spark plug to use. I've read online to use a RDJ7Y but all I can find at 4 difference sources locally is a RDJ7. Is there a difference that could cause problems like this?

Any other suggestions?
Question: Troy Bilt TB70SS Gas Trimmer

mrclean53

I have had my trimmer 4 yrs. and it usually works good.But this year it starts up and dies immediately-will not idle.And if it starts and I accelerate it dies.I sprayed carb cleaner in it 2 times overnite and no help.I noticed the primer bulb doesn't fill with gas as i prime it like it used to.Is the primer bulb the culprit? Or could the idle need adjusting?Any advice would be greatly appreciated. Thanks, Bob
I just had this problem and I replaced the primer bulb it had a hairline crack in it. One other way to tell is if the primer bulb fills half way before starting and then you have to refill it once it dies as it sucks all of the gas out of it. Once I fixed this I found out that my fuel line is also suspect but I am unable to find just the fuel line. This was just my experience. BTW the primer bulbs can be found at Lowes. Fuel lines nowhere to be found yet. I am on hold with Troy Bilt techsupport to see if I can just get the fuel line.
I don't see a carb repair kit listed in the parts list, you might want to replace the carb...
A primer bulb will not work correctly when 1. There are holes in the fuel lines inside OR outside the tank 2. The fuel filter has broken off the line inside the tank and is not staying immersed in fuel. 3. The fuel lines are breaking up and bits and pieces are inside the fine metal screen IN the carburetor 4.. The main nozzle check valve is stuck open in the throat of the carburetor.5. The dreaded hairline crack in the bulb itself.These symptoms are quite easy to check. Sometimes, just replacing the bulb is not enough. The fuel lines and filter need to be replaced too. The covers need to be taken off of the carburetor and the inside of the carb cleaned....especially the circular fine mesh screen under the pump cover. When it clogs with debris, the primer can't pull fuel into the carb because the clog stops it.
There are repair kits for all of these small diaphragm carburetors..Full rebuild or gasket and diaphragm kits. You need to KNOW the make and model of the carb or disassemble it and compare the parts to PICTURES of parts in the kits to get the correct one. New parts are NOT that hard to replace on these. Ebay is a great place to find kits.
As far as mrclean53's machine, I think he needed a new fuel pump diaphragm for the carburetor. His is acting typical of a failed, dried out one. He is fortunate it ran well for 4 years, considering the damage ethanol in fuel causes.
I just realized how old this thread is, but the primer bulb failures REMAIN the same.
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