Mower deck drive belt help?

[ebinmaine 66,582]

This question is primarily about a late seventies c121 Hydro 36-in RD deck Drive belt.

 

Looks to me like it's supposed to be a standard rubber type 1/2 in wide 96.5 or 96.7 inches in length.

 

Is there an aftermarket belt other than the Gates Blade Runner that I can use? Will a normal average everyday ½ by 97 drive this okay?

 

 

 

Are these the same belts used on Long frame tractors for other sizes of mower decks as well?

 

 

 

[squonk 40,740]

If your deck has the std sliding idler deck pulley like a 42" RD deck has I don't see why you can't run a Tractor Supply 1/2 X 97 belt on it. I run a TSC on mine and I believe it's 97"

[ebinmaine 66,582]

30 minutes ago, squonk said:

If your deck has the std sliding idler deck pulley like a 42" RD deck has I don't see why you can't run a Tractor Supply 1/2 X 97 belt on it. I run a TSC on mine and I believe it's 97"

 

 

Model number decal is wiped clean unfortunately. 

 

 

 

 

[Ed Kennell 37,492]

Some of those tension bars have two different holes for the idler pulley.

[elcamino/wheelhorse 9,237]

I'll have a part number for you in a couple of minutes I get my belts from Advance auto.

[elcamino/wheelhorse 9,237]

I use a Dayco L497 for 36 or 42 inch rd decks.

[squonk 40,740]

L497 crosses to Napa/Gates 4L970W  Tractor Supply 4L970K

 

[ebinmaine 66,582]

You guys are awesome! 

[elcamino/wheelhorse 9,237]

Now you made Sir Skunky's head bigger !

[squonk 40,740]

1 hour ago, elcamino/wheelhorse said:

Now you made Sir Skunky's head bigger !

And it's full of info! 

[elcamino/wheelhorse 9,237]

Okay Dr. Info , what kind of fuel filter do you have on the 953 ? The picture looked like a clear (glass/plastic ) thingy with brass fittings ?

[squonk 40,740]

27 minutes ago, elcamino/wheelhorse said:

Okay Dr. Info , what kind of fuel filter do you have on the 953 ? The picture looked like a clear (glass/plastic ) thingy with brass fittings ?

 Brass 1/8" thread 45deg street elbow. Metal fuel filter that came with the pump. 1/8 thread x 5/16 hose equivalent to a Napa 3046

[ebinmaine 66,582]

37 minutes ago, elcamino/wheelhorse said:

Dr. Info

 

 

 

@squonk. Ya should take that as a right solid compliment. 

I've been called waaaaaaay worse.  

 

[ebinmaine 66,582]

2 hours ago, elcamino/wheelhorse said:

I use a Dayco L497 for 36 or 42 inch rd decks.

 

 

How bolt SD decks?

42" and 48" on a C series 

[elcamino/wheelhorse 9,237]

I think they use the same belt. Only have one SD and it is set up for leaves.

[peter lena 8,461]

@ebinmaine as you are aware , the belt deck  "  bounce  "  is a result of incremental , bearing hang up  , the more it  bounces , the more rotational / bearing  issues are evident . have detailed my flat idler pulley ,  like a larger bearing , bush the inner  to 3/8  same bolt fit . also have added a flat idler ,on the back unsupported area , about middle  of  long run , drill a hole , 3/8 bolt , elastic lock nut. have that on 3 decks . no belt buzzes, Pete

[aemsee 93]

I measured the external length of the deck belt for my 36" RD mower. It is 77". ?? 97" just seemed incredibly long for my deck.

Edited April 14 by aemsee

[gwest_ca-(File Mod) 10,921]

4 hours ago, aemsee said:

I measured the external length of the deck belt for my 36" RD mower. It is 77". ?? 97" just seemed incredibly long for my deck.

 

Drive belt 102741 (1/2" x 96.6") for B-Series & C-Series tractors with 45-1/2" wheelbase (Gates replacement BladeRunner 6638BR 17/32" x 96.75")

 

Spindle belt 8411 (1/2" x 76.94")

[aemsee 93]

2 hours ago, gwest_ca said:

 

Drive belt 102741 (1/2" x 96.6") for B-Series & C-Series tractors with 45-1/2" wheelbase (Gates replacement BladeRunner 6638BR 17/32" x 96.75")

 

Spindle belt 8411 (1/2" x 76.94")

my bad.  Thought he was looking for the deck belt. thanks

[ebinmaine 66,582]

On 4/14/2024 at 10:48 PM, aemsee said:

my bad.  Thought he was looking for the deck belt. thanks

Might be four months late but I AM now looking for a deck belt. 

So your post was excellent and valid! 

 

 

[ebinmaine 66,582]

On 4/14/2024 at 8:00 PM, gwest_ca said:

 

Drive belt 102741 (1/2" x 96.6") for B-Series & C-Series tractors with 45-1/2" wheelbase (Gates replacement BladeRunner 6638BR 17/32" x 96.75")

 

Spindle belt 8411 (1/2" x 76.94")

 

Any of you folks know if I can use a box store 1/2" x 77" belt for the deck pulleys? 

[ebinmaine 66,582]

On 4/10/2024 at 11:24 AM, peter lena said:

@ebinmaine as you are aware , the belt deck  "  bounce  "  is a result of incremental , bearing hang up  , the more it  bounces , the more rotational / bearing  issues are evident . have detailed my flat idler pulley ,  like a larger bearing , bush the inner  to 3/8  same bolt fit . also have added a flat idler ,on the back unsupported area , about middle  of  long run , drill a hole , 3/8 bolt , elastic lock nut. have that on 3 decks . no belt buzzes, Pete

 

 

Pete do you have any pics of where you've added idlers?

 

 

On 4/14/2024 at 3:02 PM, aemsee said:

I measured the external length of the deck belt for my 36" RD mower. It is 77". ?? 97" just seemed incredibly long for my deck.

 

What brand deck belt are you using? 

[peter lena 8,461]

@ebinmaine   second and fifth picture down , you are looking  left to inside of  mower deck , placed idler  about in the middle of unsupported area , drilled a 3/8 hole in deck , longer thread free pulley mount , washers on each end and elastic lock nut , worked so well , have it on all my decks . like most of my mods , its on the detail of function , retaining original , intent , enhancing ease of function . none of my belt drives , have the wide , unsupported idler slide arm buzz ,  also re greased idler bearing , pete