N5756 County Road D  Fond du lac,  WI  54937

(920)906-9840 for Repair Shop

(920)933-3813 for Machine Shop 

(920)906-9841 shop cell - texting is OK


Experienced Diesel Mechanic ~

immediate full-time openings

*must have valid Drivers License

 (CDL not required but preferred)

*have the ability to work independently, diagnose customer complaints & complete repairs in a timely manner

*be a team player willing to assist other team members

on jobs when necessary

*update/relay status of repairs to customers on a regular basis

*have the flexibility & knowledge to transition from 1 job to the next quickly as we are a fast paced shop & the schedule changes regularly

*pay based on experience

*work hours: M-F 7a-5p w/2 Saturdays/month 8a-12p

UPDATE: 11/02/2021

As the pandemic of 2020's adversity continues to cause issues to supply disruptions, increase in raw materials to suppliers & a significant rise in the cost of parts/freight JTL Repair LLC cannot support all of the weight within our current price structure set in 2018 while operating as a small business. Our vendors have passed along several price increases in the last few months and we have worked diligently to minimize the cost impact to the best of our ability while in operation. However, in order to continue to service our customers as we have for the last 17 years (and into the future) we need to make adjustments to pass along increases to our customers.

Thank you so much for your loyalty to our shop while we continue to strive to meet

and exceed your expectations & the trust you have placed in us.

                                                                                    ~ Kevin & Tina Treffert  Owners ~

Hours: Monday - Friday  7:00am - 5:00pm

 Saturdays By Appointment ONLY: 

November 6th & 20th

December 4th & 18th

CLOSED November 25th ~ Thanksgiving

December 24th & 25th ~ Christmas

**We are currently booking into the week of

November 22nd or beyond for motor work

~ please plan accordingly**


Accounting dept. will close year end

as of December 27th

~ ALL customer balances must be

PAID IN FULL no later than 

Thursday, Dec. 30th @ 12pm ~