So all of the previous versions have left out both the bridge 
as well as several chords. So here is my take. Enjoy!
I believe they play barre chords, but I included the easy ones 
for you too.

Standard tuning
No capo

Chords Used

C (x32010@1) G (320003@1) Dm (xx0231@1)F (133211@1) E (022100@1) Eaug (03211x@1) Am (x02210@1)GaugE---3---3---5---1---0---0------5---3--- (x2100x@1)B---5---3---6---1---0---0------5---3---
G---5---4---7---2---1---1------6---4---
D---5---5---7---3---2---0------7---3---
A---3---5---5---3---2---2------7---5---
E---3---3---5---1---0---0------5---3---

Easy Versions

C (x32010@1) G (320003@1) Dm (xx0231@1)F (133211@1) E (022100@1) Eaug (03211x@1) AmE---0---3---1---X---0---0------0--- (x02210@1)B---1---3---3---1---0---0------1---
G---0---0---2---2---1---1------2---
D---2---0---0---3---2---0------2---
A---3---2---X---3---2---2------2---
E---X---3---X---X---0---0------2---

Intro 
C (x32010@1)                           G (320003@1)                            DmWhy (xx0231@1)so many, why so many why? Why so many, why so many, why? Why so many, 
                  F (133211@1)                           C (x32010@1)                          
why so many, why? Why so many, why so many why? Why so many, why so many why?
G (320003@1)                           Dm (xx0231@1)                          FWhy (133211@1)so many, why so many why? Why so many, why so many why? Why so many, why?

Verse
            CManny (x32010@1)don't need no comforting 
         G (320003@1)                           DmHe (xx0231@1)don't ask of the world to bring him up 
                    F (133211@1)Ain't gonna see him waitin' on waitin' on waitin' on the day 
CGot (x32010@1)him a chair in '73 
            GIt (320003@1)was his only option 
            DmSo (xx0231@1)Manny agreed 
                     FSame (133211@1)chair he has today since they threw the cane away
    Am (x02210@1)              
And Manny wasn't doing nothing 
         GHe (320003@1)just doing his own thing 
            Dm (xx0231@1)                           FYou (133211@1)know it getting pretty cold out by the jub jub swing

Chorus
COh (x32010@1)this friend today 
         GRight (320003@1)me up 
DmOh (xx0231@1)this friend today 
         FRight (133211@1)me up 
COh (x32010@1)this friend today 
         GRight (320003@1)me up 
DmOh (xx0231@1)this friend today 
         FRight (133211@1)me up

I'm not so weak

Verse
            CManny (x32010@1)gonna go where the rabble go
          G (320003@1)                                Dm (xx0231@1)He gonna roll down the world and he bring me up 
                       FAin't (133211@1)going to see him giving into the others way 
               C (x32010@1)                       G (320003@1)        GaugCause (x2100x@1)they may beat us in search but our fall is unstained 
Dm (xx0231@1)                                         FYou (133211@1)know he says it wont be long till we are up again 
Having another swing 
    AmAnd (x02210@1)Manny wasn't doing nothing 
        G (320003@1)         
He just doing his own thing 
            Dm (xx0231@1)                           FYah (133211@1)know it gettin' pretty cold but he the one who bring

Chorus
C (x32010@1)Oh this friend today 
          GRight (320003@1)me up 
DmOh (xx0231@1)this friend today 
         FRight (133211@1)me up 
No, I'm not so weak 
COh (x32010@1)this friend today 
         GRight (320003@1)me up 
DmOh (xx0231@1)this friend today 
         FRight (133211@1)me up 
             E (022100@1)name="chord_03211x@1">Eaug
I'm not so weak

Bridge
           Dm (xx0231@1)        Am'Cause (x02210@1)the bottles not empty
            G (320003@1)             Am'Cause (x02210@1)your voices are all there 
    Dm (xx0231@1)     Am (x02210@1)        G (320003@1)      AmMy (x02210@1)life will fight in my body for air 
           Dm (xx0231@1)         Am'Cause (x02210@1)the bottle's not empty 
            G (320003@1)            Am'Cause (x02210@1)your voices are all there 
   Dm (xx0231@1)      Am (x02210@1)        G (320003@1)      AmMy (x02210@1)life will fight in my body for air

Chorus

Oh this friend today 
Right me up 
Oh this friend today 
Right me up 
And oh this friend today 
Right me up 
And oh this friend today 
Right me up 
I'm not so 
And oh this friend today 
Right me up 
Oh this friend today 
Right me up 
No, I'm not so weak 
Oh this friend today 
Right me up 
Oh this friend today 
Right me up 
I'm not so weak

Outro

Why so many, why so many why? Why so many, why so many why? 
Why so many, why so many why? Why so many, why so many why? 
Why so many, why so many why? Why so many, why so many why? 
Why so many, why so many why? Why so many, why?

C (x32010@1)                              GHey (320003@1)Manny we gonna get that A.M. dial just right
Dm (xx0231@1)                                    FI'll (133211@1)hold that hanger up as long as the Sox put up afight (x02210@1)