How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask James W Your Own Question

James W
James W, Small Engine Troubleshooting Expert
Category: Small Engine
Satisfied Customers: 3700
Experience:  7 years as Mechanic & Parts Manager for Brother who has Owned Lawn & Garden Repair shop for 35 years
18589515
Type Your Small Engine Question Here...
James W is online now
A new question is answered every 9 seconds

how do I replace the drive belt on a Murray 42590A (42 inch)

Resolved Question:

how do I replace the drive belt on a Murray 42590A (42 inch) riding mower manufactured in 1998?
Submitted: 5 years ago.
Category: Small Engine
Expert:  James W replied 5 years ago.

Read all instructions first please.

 

 

First, seeing an exploded view will help you, so click here..

 

http://www.partsandservice.com/html/Murray/lt/lt42590a.html

 

Then click on the button labeled 42590A XXXXX.

 

Look this over...

 

1. Remove mowerdeck

2. Diagram current belt path around each pully, idlers, and belt guards (esp position of belt guard).

3. Depending on exact unit you will either loosen the belt guards around the rear transmission pully, or if there are not belt guards there, the Frame is being used as a belt guard.

IF this is the case, you MAY have to loosen the bolts holding the transission ON ONE SIDE just enough to allow you to slip belt through the gap. (you may have to drop the transmission several inches without damaging the linkage).

There are also belt guards on the double stacked pully on the engine that have to be loosened as well.

must remove from rear pully FIRST..

 

Reverse prosses to install new belt.

 

Double check exact location and placement of belt guards, idler pulleys and drive pullys from you diagram.

 

Nothing can rub anything..

 

NOW, We must KNOW why the belt needs replaced in the first place.

 

Something caused it to go bad.

 

Could be a bad Idler pulley, a bent idler arm, bad allignment of the pulleys, obstruction, etc..

 

If you do not determine the CAUSE of the problem to the belt, It is Going to happen again..

Inspect and examine everything while you are down there.

Customer: replied 5 years ago.

thanks for the info. someone else told me that I need to remove the mower deck too.

 

I have no owners manual instructions for removing the mower deck. I need more details on that particular step in this procedure. once I fully understand that part of it, I think I will be ok as long as I can figure out the proper routing of the belt. the belt jumped off when I was mowing on an angled part of my lawn and I was rushing and almost lost my balance, causing my to abruptly jerk the clutch and i think it just jumped off track.

Expert:  James W replied 5 years ago.

Again, the exploded view of the drive should help you with belt routing.

 

Go to the same page I gave you for getting the exploded view of the drive..

 

Go down further and clikc on the links for the Mower suspension

 

It will help you to see it..

 

Lower the deck to the ground (don't know how many people try to do this with the deck suspended up in the air).

 

First remove tension from the belt.

 

There should be a spring loaded lever that you can move to move the idler arm enough to take the belt off the double pully.

 

Then there are some PINS usually with Clips. Take the clips off, pull the pins out (usually 2 to 3 per side).

 

You should be able to slide it sideways.

 

DON't Pinch your fingers, cause it HURTS...

James W, Small Engine Troubleshooting Expert
Category: Small Engine
Satisfied Customers: 3700
Experience: 7 years as Mechanic & Parts Manager for Brother who has Owned Lawn & Garden Repair shop for 35 years
James W and 4 other Small Engine Specialists are ready to help you
Customer: replied 5 years ago.
thanks for your help. I put on the belt and now the machine won't move in drive or reverse. Do you think that I may have stretched the belt out of shape to the point where it is not getting enough torque? or did I pop a gear or link in the transmission?
Expert:  James W replied 5 years ago.

Look for obstructions causing the belt to not move.

 

You will now this...

 

IS the belt turning the BIG gear on the top of the transmission?

 

You will have to either look at it or have someone else look.

 

If the belt is Turning the gear, then It is Transfering the power to the transmission.. If it is NOT turning the big gear, FIND out WHY?

 

Is the belt Jammed, is it smoking, is it stuck between belt guards. Is there no tension on the idler?

 

Why did the belt jump off?

 

Something caused it to jump off Did we eliminate the cause?

 

If the big gear IS turning on the tranmission, why is power not getting transfered to the wheels. Is the parking break not hooked up (or is it hooked up).

 

This should keep you busy for a while.

James W, Small Engine Troubleshooting Expert
Category: Small Engine
Satisfied Customers: 3700
Experience: 7 years as Mechanic & Parts Manager for Brother who has Owned Lawn & Garden Repair shop for 35 years
James W and 4 other Small Engine Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy Bagley, IA
< Last | Next >
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy Bagley, IA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Curtis B.

    Technician

    Satisfied Customers:

    6989
    have worked on and around most engine models for 35 yrs./Polaris ATV expert
< Last | Next >
  • http://ww2.justanswer.com/uploads/KO/koboma/2012-6-6_20917_DSCF1022.64x64.JPG Curtis B.'s Avatar

    Curtis B.

    Technician

    Satisfied Customers:

    6989
    have worked on and around most engine models for 35 yrs./Polaris ATV expert
  • http://ww2.justanswer.com/uploads/SM/SmEngPro/2012-8-5_3564_Rick1206290005Edit.fullres.logo.scrn.64x64.jpg Rick's Avatar

    Rick

    Factory Authorized Trainer

    Satisfied Customers:

    4126
    Outdoor Power Equipment technical trainer since 1990, covering eight states.
  • http://ww2.justanswer.com/uploads/GI/giftindex/2011-11-19_2715_JamesLWells500.64x64.jpg James W's Avatar

    James W

    Small Engine Troubleshooting Expert

    Satisfied Customers:

    2978
    7 years as Mechanic & Parts Manager for Brother who has Owned Lawn & Garden Repair shop for 35 years
  • http://ww2.justanswer.com/uploads/jonrk/2010-1-5_22551_jon.jpg Jon K.'s Avatar

    Jon K.

    Small Engine Diagnostic Expert

    Satisfied Customers:

    2950
    Gold certified Stihl tech, Service Manager for a rental/repair shop.Certified in most small engines
  • http://ww2.justanswer.com/uploads/MR/mr2cycle/2011-3-12_03458_sears.64x64.jpg Vince O.'s Avatar

    Vince O.

    Small Engine Technician

    Satisfied Customers:

    2374
    Over 30 years experience repairing lawn and garden equipment. Chainsaws, mowers,blowers and trimmers
  • http://ww2.justanswer.com/uploads/rheisnger/2010-12-31_010856_41385_100001225699183_7012_q.jpg RUSS's Avatar

    RUSS

    SERVICE TECHNICIAN

    Satisfied Customers:

    1723
    28 YEAR SERVICE TECHNICIAN
  • http://ww2.justanswer.com/uploads/BriggsEngines/2010-02-26_230200_n1834842973_4823.jpg CJBennett's Avatar

    CJBennett

    Small Engine Technician

    Satisfied Customers:

    623
    Briggs and Stratton Master Service Tech, Kohler, Tecumseh, Kawasaki certified. 18 years exp.