Part Location Diagram of 105-3042 Toro Knob Lever
See part B-8 in the diagram
Replacing your Toro Lawn Mower Knob Lever
( Grid squares measure 1x1 inch )

Knob Lever 105-3042

Manufactured by:
Toro
ERP Number:
ERP8826626
Part Number:
105-3042
Original Equipment Manufacturer ?
  Works with your model  20331!
In Stock
Delivers in 3-5 Business Days!

Easy 

15 - 30 mins 

(10 rated repairs) ?
  Works with your model   20331!

Product Description

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This item is a genuine Toro replacement part that is OEM sourced to ensure quality. The plastic knob is intended to be used with walk-behind lawnmowers. This item attaches to the height adjustment lever and is used as a grip when changing the cutting height of the deck. The lever knob is priced individually and four may be needed.

Frequently Purchased Together

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Troubleshooting

This part works with the following brands:
  • Toro
  • Lawn Boy
This part works with the following products:
  • Lawn Mower
Part# 105-3042 replaces these:
105-3042,

Videos For installing this part.

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Replacing your Knob Lever

Customer Part Reviews

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Questions & Answers

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Customer Repair Instructions

All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.

Easy 

15 - 30 mins 

(10 rated repairs) ?
  • 1
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Cable-Brake broke at the point where it attaches to the upper handle. Plastic piece broke in half.

Joe from Rowlett, Texas

6 of 6 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Socket set
Parts Used:
115-8439, 105-3042
1. Disconnected the spark plug
2. Removed the mower blade
3. Removed plastic shroud covering the belt/pulley system and removed the rear plastic shroud.
4. Marked the location where the old cable was clamped to the underside of the deck with a Sharpie so that I would know where to clamp the new cable.
5. Removed th e cap nut holding the cable loop to the handle.
6. Pried out the plastic pivot button out of the plastic socket, located just under where the handle end of the cable attaches.
7. Reversed the process to install the new cable.
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Arm-Spring that held the wheel in place broke

Carl from Staunton, Virginia

5 of 5 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Screw drivers, Socket set, Wrench set
Parts Used:
107-7491, 105-3042
Remove wheel, remove everything from the axle on the outside of the mower deck. Remove broken arm-spring from the part holding it (one bolt) Install new arm-spring, reinstall everything on the axle in the order it came off. Reinstall wheel. Started mower, it works great! Installed new air filter, new spark plug, new mower blade. Changed o il and ran mower out of gas, put away until Spring.
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Threads stripped on main wheel anchor plate

Glen from Castle Rock, Colorado

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Screw drivers, Socket set, Wrench set
Parts Used:
614650, 105-1820, 105-3042
1. Removed wheels
2. Replaced anchor plates
3. Installed wheels
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The bolt that attaches the whole wheel and height control cracked in two.

Vishal from Champaign, Illinois

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Socket set, Wrench (Adjustable), Wrench set
Parts Used:
603773, 3256-24, 114-3467, 105-3042
1. Went to your site to look at which parts had been there before they broke off and fell somewhere in the yard.
2. Ordered the parts and waited them to arrive.
3. Unscrewed the bolt-shoulder from the cutting height mechanism (a.k.a. arm pivot), allowing me to remove the wheel.
4. Slipped the new bolt that had been cracked (screw-shoulder) into the arm pivot.
5. Re-attached the wheel.
6. Slip the spacer-wheel over the screw-shoulder.
7. Slip the screw-shoulder through the hole in the chassis.
8. Place the washer-flat on the screw-shoulder
9. Screw on the nut to the screw-shoulder.
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had to replace bottom mower plate

Glenn from Murrysville, Pennsylvania

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Wrench (Adjustable), Wrench set
Parts Used:
105-3042
It was much harder to replace the old bottom plate than attach the new one.
Bolts and nuts were corroded and rusted.
One the bolts were removed and the rust removed, the repair was quite straight forward.
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ItGÇÖs the wrong part

William from REDDING, California

0 of 1 people found this instruction helpful.
Difficulty Level:
Difficult
Total Repair Time:
Less than 15 mins
Parts Used:
105-3042
This part might fit other mowers but not mine.
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Wheel knob lever broke off

al from staten island, New York

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
105-3042
Slipped new wheel knob lever over bracket
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Front wheel adjuster broke

Donald from GEORGETOWN, Delaware

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Pliers, Socket set, Wrench set
Parts Used:
133-8154, 105-3042
Removed broken front wheel adjuster and put new one on checked operation and is back to normal again
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lost know lever// replaced

James from FAIRMONT, West Virginia

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
105-3042
jut slid knob in place/ tapped with mallot \"DONE\"
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Rear height adjust levers sprung , not holding

Trey from Chester Springs, Pennsylvania

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Socket set
Parts Used:
105-3042, 105-1809
Remove the shoulder bolt , washer, rear wheel and the pivot arm. Install the new spring arms. Reassemble all of the parts that were removed, in reverse order. I did also put two new levers on the arms.
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  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP8826626
Manufacturer Part Number: 105-3042
Brand Model Number Description
Lawn Boy 10603 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10604 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10605 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10606 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10607 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10623 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10624 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10625 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10627 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10630 Lawn Mower - 20in Mulching/RearBagging Lawn Mower
Lawn Boy 10632 Lawn Mower - 20" Mulching/Rear Bagging Lawn Mower
Lawn Boy 10634 Lawn Mower - 20" Mulching/Rear Bagging Lawn Mower
Lawn Boy 10640 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10640C Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10641 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10641C Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10642 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10642C Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10643C Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10644C Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10645 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10646 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10647 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10648C Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10649C Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10650C Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10658 Lawn Mower - 20In Mulching/Rear Bagging Lawn Mower
Lawn Boy 10730 Lawn Mower - 21 Inch Walk-Behind Mower
Lawn Boy 10732 Lawn Mower - 21" Mulching/Rear Bagging Lawn Mower
Lawn Boy 10734 Lawn Mower - 21 Inch Walk-Behind Mower