Knob-three Arm 720-0170

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

Use 926-0211
$4.99

Compatibility

This part is compatible with the following machines:

MTD

Expand the 150+ compatible machines

Products Compatibility

This item works with the following types of products:

• Blower
• Chipper / Shredder

Repair Instructions: Submitted by Customers Like You

Tool Type:

Chipper Shredder

Parts Used:

Knob-three Arm - 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:

Nut-push - 726-0201

Use 926-0211 - 726-0211

Knob-three Arm - 720-0170

Nut-jam Lock 3/8-1 - 712-0266A

Pin-shoulder - 738-04286A

Blade-flail - 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:

Knob-three Arm - 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

Average Rating (out of 5):

2 Reviews

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hard to find parts

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

eReplacementParts Team

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Questions & Answers for Knob-three Arm