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How to install drive belt on a 2003 husqvarna gth2548 lawnmower

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SOURCE: gth2548 belt diagram and steering trouble

Go to type in your model number it should show your diagrams and parts for your mower

Posted on May 12, 2009


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Husqvarna YTH20K46 lawnmower does not move forward when in drive

Check the drive belt and pulleys. Make sure the belt is tensioned when you release the brake.

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Drive belt slips on Husqvarna YTH21K46 riding lawnmower, installed new drive belt and it slips. mower is 2 years old

I had this same issue. New belts and correct routing did not solve the problem. The issue with my mower was the tabs that come off the frame that you bolt the transaxle (the drive for the rear wheels and axle) had almost completely torn/cracked away. This allowed the transaxle to tilt forward under a load and slip the belt off the rear drive pulley. You see no mention of this at the dealer or company sights. The tabs are so thin this is going to happen, in my opinion, in time. I reinforced this area with 1/4 inch angle iron and have had no further belt issue.

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Gth2548 25hp 48" - bolt

Hi hoofprintsfa,

Welcome to fixya!

Here is the website for your manual:

Copy and paste this address into your web browser and the manual will be ready to download for you.

Here is a website where you can get parts for your tractor. It includes a parts diagram:

Hope this helps. If it does, I'd appreciate your vote. Keeps me working here.....

Handie Andie

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GTH2548 drive spring broke and I replaced it. Tractor would not start. Replaced battery, start switch, seat switch and PTO switch. Tractor will now start and runs well. However, when PTO switch is...

yes when the belt broke it grabe the wires that goto the cluch frome the pto switch and thay have bar spots on them and are grounding out i just done one that was doing the sam thing all you have to do is fix the wires and that should fix ya up thanks for your time mickey

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Blades will not engage on Husqvarna riding mower.

Could be a broken belt, loose belt (stretched) or something is under the mower deck jamming the blades. (stick for an example)

Apr 14, 2010 | Husqvarna Lawn Tractor 48" Deck, 23 Hp,...

1 Answer

Gth2548 belt diagram and steering trouble

Go to type in your model number it should show your diagrams and parts for your mower

May 06, 2009 | Husqvarna Lawn Tractor 48" Deck, 23 Hp,...

1 Answer

What is the length of the primary mower belt for a Husqvarna GTH2548 lawn tractor

Many of the parts you can just drop the prefix and use the Sears /AYP #
So, look at the hood sticker or in your manual for the Husq#. 532 18 08-08 becomes 180808 which is a common Sears belt for their secondary belt on the newer 48.
OEP shows as a 5/8 X 89"
The primary for these 174368 (Engine to deck)OEP shows 5/8 X 90.
Best to get the oem if you can. Never tried aftermarket on these.


Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

Apr 05, 2009 | Husqvarna Lawn Tractor 48" Deck, 23 Hp,...

3 Answers

Primary v-belt , mower , on gth2548 keeps tearing/chunking out

Hi there,

I have a CTH2542 which has a 42" cutting deck. I bought this from new and it's now aprox 8 mths old. I observed slippage problems with the machine after about 3 months, and being a diesel mechanic myself, dropped the cutting deck off and checked the drive belt. It appeared to be an 'A' section belt which means it should be of 1/2" (12.7mm) section. Measurement revealed it had worn 1mm and was bottoming out on the drive pulley at the motor. Once any vee belt (or pulley for that matter) wears to this point it must be replaced as it WILL NOT grip the sheaves of the pulley. I had my local service agent look at it, but they say they could find nothing wrong. I investigated the problem further and to my surprise, I discovered the swinging (spring loaded) belt tensioner has been positioned on the loaded side of the vee belt. Therefore the more load that's placed on the drive, the more the tensioner is pushed aside, and the looser the drive belt becomes. I have re-jigged the drive setup on my machine (it was suprising easy once I'd figured out what to do). Now, if I **** the bull bar of the machine against my Ford tractor tyre, and load the hydraulic transmission, the rear wheels will actually spin - it wouldn't do that before. The reason I investigated this problem so thoroughly was because I went to buy a replacement vee belt for the machine and was told 'Husqvana tractors for some reason munch up standard vee belts - you must use the genuine belt which is kevlar based'

Mike Clarke
New Zealand

Jan 16, 2009 | Husqvarna Lawn Tractor 48" Deck, 23 Hp,...

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