Export thread

Ok this may sound dumb but i have this old mower that i paid nothing for and have run the heck out of it. Its marked a lawn general 46" 3 blade deck. 18 hp 14 speed. Here is my problem. I have no model or serial number. It runs two belts to the deck. One runs from the motor to a dual pulley on the left side of the deck. There is another belt that runs from that pulley to two other pulleys including a tensioner. My issue is the belts finally have stretched beyond use and i need to replace them but have no idea what i need. I should also replace the drive belt as well. Any help would be greatly appreciated.
Thank you
Sjkader

Try this Murray model number, 46430x31A

Does this deck engage with a big handle that also lets the blade deck down?

tom3 said:

Does this deck engage with a big handle that also lets the blade deck down?

Click to expand...

No it doesnt. It has a separate pto lever.

Rivets said:

Try this Murray model number, 46430x31A

Click to expand...

Its close but the double pulley is on the left side of deck. So ultimately right now the one blade will engage but the other two wont. The belt is stretched i believe.

Can you post all engine numbers, so I have an idea of an approximate year?

Rivets said:

Can you post all engine numbers, so I have an idea of an approximate year?

Click to expand...

B&S model 422707 type 1510 01 code 9402185B

This might be it, built by MTD. https://www.partswarehouse.com/Lawn-General-144P849H147-1994-Garden-Tractor-s/387108.htm

Rivets said:

This might be it, built by MTD. https://www.partswarehouse.com/Lawn-General-144P849H147-1994-Garden-Tractor-s/387108.htm

Click to expand...

Thats it!! Thank you so much!

The spring loaded tensioner isnt free moving. My grass is tall and wet. Looks like it moved but didnt spring back causing the belt to throw. Thank you so much for the help.

If it isnt one thing its another. Bearings went out on tensioner lol. Ordered a new one. Lol

So i replaced a bad pulley and something dont seem right on how it sits when clutch released

Sorry this pic

What was the part number for the belts you got?

In the pictureS in post #14 & #15, is the brake on or off?

Brake was off.
Those pictures are prior to belt change.

I went with Stens OEM Replacement Belt, MTD 954-0362, and Stens OEM Replacement Belt, MTD 954-0358

I also noticed when i release the clutch it releases fast and then the clutch gets slower and i can use my foot to pull it all the way back (released)

Those two pulleys should never touch. Are they still touching with the new belts installed?

Rivets said:

Those two pulleys should never touch. Are they still touching with the new belts installed?

Click to expand...

Yes they are. When the clutch is released the two touch

Either the belt is the wrong length or not routed correctly. I’ll find the length for you.

Belt length should be 47.5”.

Rivets said:

Either the belt is the wrong length or not routed correctly. I’ll find the length for you.

Click to expand...

Ill double check its routed correctly

You will have to remove the belt to measure it.

Rivets said:

Belt length should be 47.5”.

Click to expand...

ill get back to you on that. I did put it against the old one and it was a perfect match.

Check the pivot hole.
If it is flogged out oval it will allow the pulleys to move too far.
Also check the clutch tension spring.
They get weak and they also cut a groove in the anchor point which has the same effect.

bertsmobile1 said:

Check the pivot hole.
If it is flogged out oval it will allow the pulleys to move too far.
Also check the clutch tension spring.
They get weak and they also cut a groove in the anchor point which has the same effect.

Click to expand...

I apologize if i sound dumb but this is my first time working on mowers. The pivot hole?

Rivets said:

You will have to remove the belt to measure it.

Click to expand...

Its the correct length. Sorry had to tear it down. Put it together and move it out to work on golf cart. I really need to clean out the other side of garage lol

Do not appologise for asking any question ever.
Peoples mechanical aptitude varies so if some one uses a term you do not understand then by all means ask .
The moving pulley is mounted on an arm that pivots around a bolt
Some times there is a bush there .
The hole is the pivot hole
It s supposed to be oiled but never does so it wears oval.
Twenty thou of wear on the hole is a 1/4 " at the pulley

bertsmobile1 said:

Do not appologise for asking any question ever.
Peoples mechanical aptitude varies so if some one uses a term you do not understand then by all means ask .
The moving pulley is mounted on an arm that pivots around a bolt
Some times there is a bush there .
The hole is the pivot hole
It s supposed to be oiled but never does so it wears oval.
Twenty thou of wear on the hole is a 1/4 " at the pulley

Click to expand...

Could this be the problem? I have had issues with this before. It has a metal post that stops it from pulling to far back. It has been bent before. I also believe its missing the nylon piece.

No that is the throttle , but it dose suffer the same fate.
It is part # 74, just below the image on your screen shot
It wears oval on the pin # &# which itself can wear.
A very small amout of wear leads to a lot of movement at the pulley
It could also be because the top belt is running on the root of the variable speed pulley
Put ypour foot hard down on the accelerator pedal & crank the engine for a few seconds.
Anothe culprit can be the spring # 76 is in the wrong place & pulling too hard on the lever which in turn forces the small pulley to close to the large one.

I gave up the battle. Broke down and bought a new mower. Thank you all for your help.

Pivot hole is where the pulley bolt goes through. If the hole is not round the pulley will wobble.