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Repair Parts Home  Lawn Equipment Parts  MTD Parts  720-0170 3-Arm Thumb Scr. 5/16-18 x .75" Lg.
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3-Arm Thumb Scr.​ 5/​16-18 x .​75" Lg.​

Part Number: 720-0170
MTDTroy-BiltYard MachinesCraftsmanCub CadetHuskyYard Man
Availability: Special Order [ more info ]
Price: $9.63
Leaves our warehouse within
1 - 4 business days

*This part replaces obsolete part #: 681-0048.

Product Information
Manufacturer: MTD, Troy-Bilt, Yard Machines, Craftsman, Cub Cadet, Husky, Yard Man
Product Number: 720-0170
Classification: Part
Weight: 0.07 lbs.
Shipping: Ships Worldwide
Description:
It is a genuine manufacturer-sourced item which is specially designed for use with MTD blowers and chippers. This replacement thumb screw has a few different applications depending on the model of your unit, please refer to appropriate diagrams for correct location and use of this hardware. It is a high-quality item which is made of durable metal with plastic and it is sold individually.
Frequently Purchased With
Compatibility

This part is compatible with the following machines:

MTD
247-652C000 (1997) Blower
246-692-000 (1996) Blower
246-699-134 (930-792) (1996) Blower
245-692-000 (1995) Blower
245-699-134 (1995) Blower
244-692-000 (1994) Blower
244-692-135 (1994) Blower
244-693-000 (1994) Blower
243-692-000 (1993) Blower
243-692-032 (1993) Blower
243-692-054 (1993) Blower
243-692-134 (1993) Blower
243-692-135 (3Z811) (1993) Blower
243-692-205 (1993) Blower
242-692-000 (1992) Blower
242-692-054 (1992) Blower
242-692-134 (238-244) (1992) Blower
241-692-000 (1991) Blower
241-693-000 (1991) Blower
241695 (1991) Blower
241-692-134 (1991) Blower
240-692-000 (1990) Leaf Blower
240-693-000 (1990) Leaf Blower
240695 (1990) Leaf Blower
240-692-062 (95323) (1990) Leaf Blower
240-692-135 (1990) Leaf Blower
24695-9 (1989) Leaf Blower
249-692-000 (1989) Leaf Blower
249-693-000 (1989) Leaf Blower
249-692-122 (1989) Leaf Blower
24695-8 (1988) Blower
248-692-000 (1988) Leaf Blower
248-693-000 (1988) Leaf Blower
248-694-000 (1988) Leaf Blower
248-685-135 (3Z811-5) (1988) Leaf Blower
248-692-122 (1988) Leaf Blower
247-692-000 (1987) Leaf Blower
247-693-000 (1987) Leaf Blower
247-694-000 (1987) Leaf Blower
247-692-135 (3Z811) (1987) Leaf Blower
692 (1987) Leaf Blower
246-692-000 (1986) Blower
246-693-000 (1986) Blower
246-694-000 (1986) Blower
24695C (1986) Blower
24695S (1985) Blower
247-465A000 (1997) Chipper
246-642A000 (1996) Chipper
246-642A118 (1996) Chipper
246-642D000 (1996) Chipper
246-645B000 (1996) Chipper
246-645B129 (1996) Chipper
246-648B000 (1996) Chipper
246-648B129 (1996) Chipper
246-648D401 (1996) Chipper
246-653B129 (1996) Chipper
246-685-000 (1996) Chipper
245-641A000 (1995) Chipper
245-645A118 (1995) Chipper
245-645B000 (1995) Chipper
245-645B129 (1995) Chipper
245-648B000 (1995) Chipper
245-648B129 (1995) Chipper
245-648D401 (1995) Chipper
245-651B000 (1995) Chipper
245-675-000 (1995) Chipper
245-685-000 (1995) Chipper
245-689-000 (1995) Chipper
244-640A000 (1994) Chipper
244-641A000 (1994) Chipper
244-645A000 (1994) Chipper
244-645B000 (1994) Chipper
244-645B129 (1994) Chipper
244-645B135 (1994) Chipper
244-645B372 (1994) Chipper
244-648B000 (1994) Chipper
244-648B129 (1994) Chipper
244-648C000 (1994) Chipper
244-648D401 (1994) Chipper
24A-464B300 (2003) Chipper-Shredder
244-650B000 (1994) Chipper
244-651B000 (1994) Chipper
244-675-000 (1994) Chipper
244-685-000 (1994) Chipper
244-685-135 (1994) Chipper
244-689-000 (1994) Chipper
243-640A000 (1993) Chipper
243-640A032 (1993) Chipper
243-640A205 (1993) Chipper
243-640A331 (1993) Chipper
243-640A372 (06-479901) (1993) Chipper
243-641A000 (1993) Chipper
243-641A054 (481-4158) (1993) Chipper
243-645B000 (1993) Chipper
243-645B031 (1993) Chipper
243-645B032 (1993) Chipper
243-645B054 (481-4125) (1993) Chipper
243-645B083 (1993) Chipper
243-645B098 (1993) Chipper
243-645B134 (1993) Chipper
243-645B135 (5Z320) (1993) Chipper
243-645B161 (1993) Chipper
243-645B205 (1993) Chipper
243-645B331 (1993) Chipper
243-645B352 (1993) Chipper
243-645B372 (06-445183) (1993) Chipper
243-645B401 (1993) Chipper
243-648B000 (1993) Chipper
243-648B032 (1993) Chipper
243-648B054 (1993) Chipper
243-648B101 (850-6450) (1993) Chipper
243-648B102 (1993) Chipper
243-648B118 (1993) Chipper
243-648B134 (1993) Chipper
243-648B205 (1993) Chipper
243-648B331 (1993) Chipper
243-651B000 (1993) Chipper
243-651B161 (1993) Chipper
243-685-000 (1993) Chipper
243-685-031 (1993) Chipper
243-685-032 (1993) Chipper
243-685-054 (1993) Chipper
243-685-135 (3Z479) (1993) Chipper
243-685-161 (1993) Chipper
243-685-205 (1993) Chipper
243-689-000 (1993) Chipper
243-689-205 (1993) Chipper
242-640-000 (1992) Chipper
242-640-032 (1992) Chipper
242-640-062 (97353) (1992) Chipper
242-640-088 (1992) Chipper
242-640-098 (95-2451-3) (1992) Chipper
242-640-129 (441-774) (1992) Chipper
242-640-134 (1992) Chipper
242-640-136 (1992) Chipper
242-640-137 (1992) Chipper
242-640-192 (1992) Chipper
242-640-205 (1992) Chipper
242-640-304 (1992) Chipper
242-640-372 (06-479901) (1992) Chipper
242-640-702 (1270149) (1992) Chipper
242-640-736 (1992) Chipper
242-641-000 (1992) Chipper
242-645-000 (1992) Chipper
242-645-009 (1992) Chipper
242-645-027 (1992) Chipper
242-645-031 (B063-295) (1992) Chipper
242-645-032 (1992) Chipper
242-648-000 (1992) Chipper
242-650-000 (1992) Chipper
Expand the 150+ compatible machines
Products Compatibility

This item works with the following types of products:

  • • Blower
  • • Chipper / Shredder
Questions & Answers

No questions have been asked yet
Repair Instructions: Submitted by Customers Like You
Tool Type:
Chipper Shredder
Parts Used:
3-Arm Thumb Scr. 5/16-18 x .75" Lg. - 720-0170
Repair Difficulty:
Medium
Time Spent Repairing:
1-2 hours
Tools Used:
Power Drill, wire feed welder, hand shears, zip disks
the chipp[er wasn't used for over two years - lots of rust.
1. Checked gas and oil. Added some fresh gas - oil was OK.
2. Choked and pulled the starter cord. Engine turned over but cord didn't retract.
3. pulled engine cover off and sprayed WD-40 on end of snout. Balls freed up. Replaced the cover and pulled cord twice and the engine started. I let it run for 10 minutes.
4. The discharge chute hand knobs were totally rusted solid. I used a zip disk to remove then drilled out the remaining threaded part and ran a tap to establish new the threads.
5 Ordered a pair of hand knobs. Made a pair of temporary pieces from 5/16 bolts with a 2 inch piece of 1/4 inch round rod welded on the head.
6. I changed the direction of the discharge chute so it was more parallel with the ground. I modified the top of the chute by cutting each side at 2 inch intervals so I could flatten the top.
I made new sides from a piece of old washing machine sheet metal, drilled 3/8 inch holes along the top edge to plug weld them to the top piece. I cut the grooves to line up with the adjustment knobs. Sanded piece with a flap wheel then two coats of Rust-oleum.



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Tool Type:
Chipper Shredder
Parts Used:
Speed Nut, .3125 - 726-0201
U-Nut, 5/16-18 - 726-0211
3-Arm Thumb Scr. 5/16-18 x .75" Lg. - 720-0170
Jamlock Nut, 3/8-16 - 712-0266A
Shoulder Pin, .5 X 2.625 - 738-04286A
Flail Blade - 719-04308
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Socket set, Wrench Set, allen wrench set
flail blade broke. Replace other worn parts while equipment was torn down.
1.Remove lower housing bolts.
2.Remove 2 front frame bolts and loosen 2 rear frame bolts.
3. Separate front shredder assy. housing from rear housing
4. Replace broken and worn parts on shredder hub
5. Reassemble unit.
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Tool Type:
Blower
Parts Used:
3-Arm Thumb Scr. 5/16-18 x .75" Lg. - 720-0170
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
N/a
Turned hand knob into welded nut.
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Reviews
5
Average Rating (out of 5):
2 Reviews
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    was so easy to order. Had the parts for a Craftsman that could not be found locally. Shipping cost was fair. Have EReplacementParts on my favorite list as I am sure I will ordering from them again.
    Guest - June 13, 2020 Verified Purchase
    Item as advertised.
    This item goes on my MTD chipper. Not really much to say. It keeps the discharge chute from moving so I can make mulch for my wife's many plants. It was delivered relatively quickly.
    Guest - September 24, 2019 Verified Purchase
    Verified Purchase
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    Product Information
    Manufacturer: MTD, Troy-Bilt, Yard Machines, Craftsman, Cub Cadet, Husky, Yard Man
    Product Number: 720-0170
    Classification: Part
    Weight: 0.07 lbs.
    Shipping: Ships Worldwide

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