Experienced gardeners share their insights in answering this question :
Are you still looking for that belt diagram..? Is this for the motor
to trans (which is pretty simple) or the belt for the deck..? Couldn’t
find a diagram so hope my drawing comes out right.. This is for the “deck
belt” routing..!!! Back of mower is up here on the top..Left pulley (O\ /O) Right pulley …….Tension \ \@/ / Pulley ………….Engine \ @ / Pulley Front
of mower here, where the motor is.. Main thing is, you take the belt from BETWEEN the right
& left pulleys, pull it down and around the tension pulley..Hope this helps.. Think I have the same Sentinel..

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

The deck belt on your riding lawn mower connects the crank shaft to the lawn mower blades, causing them to turn. If you notice cracks forming in the rubber, consider changing your deck belt. To avoid interruption while mowing, change the deck belt before it breaks.
The “Deck Belt” goes around the pulleys right above the blades on the deck and then to a double pulley. The “Drive Belt” on your mower goes from the transmission, around an Idler pulley then over to the double pulley I mentioned before. The Drive belt also plays a role in making the wheels turn.
The ground drive belt connects the engine crankshaft to the transaxle pulley to drive the rear wheels. If the belt breaks, the lawn tractor won`t move. If the belt is worn, the lawn tractor moves sluggishly because the belt slips on the pulley.
Anatomy of a Belt

The vast majority of belts (once you`ve moved beyond the simple string) have two parts: the buckle and the strap. Many belts also have a keeper loop and/or an end tip (the end tip is usually metal, or leather on cloth belts).

A mower deck belt is a rubber belt on the inside of a lawnmower that allows a lawnmower`s moving parts to work.
The lower belt on the deck is called the arbor belt. This belt engages the pulleys on the deck and activates the blades.
Different Types of Belt Drives: There are different types of Belt Drives the Most Common Used Belt Drives are Flat Belt, V-belt, Round Belt, Circular Belt. Flat Belts are Mostly used in factories. V-Belt can transmit power from one pulley to another pulley.
Unlike chain drive, which requires very frequent cleaning, tightening and maintenance, belt drives are relative maintenance free. They run clean as they don`t have to be lubricated with sticky lubes and don`t require cleaning either.
Buckle: Belt buckle is a part that will keep the belt fixed on our waist. Fully metal and stainless hardware, this part of your belt with a different and designed look to help you reflect your style. The belt buckle can consist of a single part or a number of different parts.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

ROUTING OF BELT – Mtd Drive Belt 42"
ANSWER : Diagram is on the mowing deckBest regardsCk

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Need diagram of deck belt installation – Craftsman 17.5 hp 42 in. Deck Lawn Tractor – CA Model
ANSWER : May I get the make and model # to get you the right belt diagram

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Drive belt Have replace drive belt but mower still has no forward movement. Mower is only 2 years old but its already had to have another drive belt installed by the dealer last year. wanted to do it myself but when i install belt theres hardly any tension so mower doesnt move. Checked and rechecked the diagram and is installed correctly. Cant find a tensioner adjustment if it has one.
ANSWER : I don’t have an answer for you, but Do you have a diagram of the Drive Belt?

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LT1045 keeps breaking NEW belts after just a short period of mowing.
ANSWER : Have you checked the bearings?

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Mower belt diagram – Craftsman 17.5 hp 42 in. Deck Lawn Tractor – CA Model
ANSWER : You can get a belt diagram from

just follow the leads, and have your model number handy, you will need it.

you can also get this from

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ANSWER : MTD says there are 2 different applications. I hope this one is yours, if not, by using it as a reference; maybe you will be able to do yours. Good luck.

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Do I have to remove the mower to replace the secondary drive belt?
ANSWER : Detaching the deck is the best way to do a drive belt, the first time you do the deck can be a mind bender, but you can mark the items place with tape and a pen so it makes it easier to install and or pictures. you can bend the belt guide bars rather than trying to remove them and bend them back into place when the belt is back on

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I am trying to replace a belt on the deck mower
ANSWER : If it’s a craftsman. Go to and put in your exact model number (which you didn’t list) then when you get to the parts listing, look on the right hand side of the page and see if there is a link to manuals for your model , if so click on that. The manual should show you pictures of your belt.

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