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4000EXL (1645-0) Generac Generator - Overview

Diagrams for 4000EXL

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Leg, Mounting – Part Number: B1764GS
No Longer Available
Leg, Mounting
★★★★★
★★★★★
(1)
Part #B1764GS
This is a genuine part which is supplied directly from the original equipment manufacturer. This leg support is used to stabilize a Briggs and Stratton generator while it is in use. Please refer to the owners manual for instructions on how to install or replace the leg support. This part is made of metal and is sold individually.
Assembly, Holder, Brush – Part Number: 66386GS
$32.55
In Stock
Assembly, Holder, Brush
Part #66386GS
The brush holder assembly in your generator keeps the brushes in place, allowing them to touch the rotor. It consists of a plastic brush holder and two carbon brushes with lead wires and attached springs. You can usually find the holder assembly inside the generator housing, near the rotor and stator assembly. If the holder assembly is broken, it can cause improper electrical contact between the brushes and the rotor, leading to a loss of electrical current transfer. Additionally, over time, the brushes will wear down from use, resulting in inconsistent contact with the rotor. Look for visible signs of damage like cracks, breaks, or deformations in the holder. A damaged holder can cause unstable voltage, power surges, or your generator failing to generate electricity altogether. To remove the existing brush holder assembly from your generator, refer to your user guide for detailed instructions. It may involve removing a cover or access panel to reach it. Use a nut driver or suitable tool to disconnect the assembly from the rear-bearing carrier and any connected wires. Remember to magnetize the brush assembly and conduct a generator test after installing the new one. Please keep in mind that this authentic OEM part is sold individually.
Charger, Bttry – Part Number: B4177GS
$33.75
Special Order
Charger, Bttry
Part #B4177GS
Cap, Circuit Breaker – Part Number: 84198GS
$6.41
In Stock
Cap, Circuit Breaker
Part #84198GS
Cable, Battery Charge – Part Number: 65787GS
$24.62
Special Order
Cable, Battery Charge
Part #65787GS
Cap, Fuel,vented – Part Number: 189135GS
$31.75
In Stock
Cap, Fuel,vented
Part #189135GS
This is a genuine OEM sourced component which is specially designed for use with Briggs and Stratton portable generators. It is an identical replacement for a missing or a faulty vented cap that keeps the fuel inside the tank, please make sure to check the appropriate diagrams of your model for the correct location and application of this hardware. Keep in mind this high-quality item is made of durable plastic and is sold individually.
Brkr, Crct, 30a – Part Number: 75207AGS
No Longer Available
Brkr, Crct, 30a
Part #75207AGS
Mnt, Vibr, Alt Dia 1.25 – Part Number: 85652GS
$13.67
Special Order
Mnt, Vibr, Alt Dia 1.25
Part #85652GS
Trnsfrmr, Idle Cntrl – Part Number: 84028GS
$16.96
Special Order
Trnsfrmr, Idle Cntrl
Part #84028GS
Bolt, M6 - 1.0 x 115 – Part Number: 86308GS
$4.23
Special Order
Bolt, M6 - 1.0 x 115
Part #86308GS
Taptite, M5-0.8 X 10 Lg. – Part Number: 74908GS
$4.23
Special Order
Taptite, M5-0.8 X 10 Lg.
Part #74908GS
Pin, Retaining – Part Number: 87005AGS
$4.23
Special Order
Pin, Retaining
Part #87005AGS

Questions And Answers for 4000EXL

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Florian - For model number 01645-0
March 14, 2026
Having a hard time finding the right fuel tank and a oil pressure switch
Chris Boyle Profile
Hello Florian, thank you for reaching out to us. The fuel tank, part number PS9912397, and the oil pressure switch, part number PS16722972, are compatible with your model number. We hope this information helps!
$88.16
Special Order
Tank, Fuel, 4.5 Gal
$45.05
Special Order
8psi Switch, Oil Pressure
1 person found this instruction helpful.
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Quinten - For model number 4000EXL
February 6, 2020
Tune up kit oil filter and spark plug
Chris Boyle Profile
Hello Quinten, thank you for contacting us, In order for us to locate the correct parts and repair information we will require the model number of the Engine. Once you have located the model number please feel free to resubmit the question and we will be happy to help you. We are looking forward to hearing from you.
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