All-Terrain Lawn Tractor Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.

All-Terrain Lawn Tractor Forum

Like riding lawn tractors through mud, woods, rocks, and snow? Then this is the place for you! Share your ideas, Post your projects and more!
 
PortalHomeSearchRegisterLog inTop Tractor Challenge

 

 16hp twin carb?

Go down 
3 posters
AuthorMessage
goesman
Screwdriver
Screwdriver
goesman


Age : 42
Join date : 2012-01-18
Posts : 119
Forum Rep : 0
Location : Salem, Mo.

16hp twin carb? Empty
PostSubject: 16hp twin carb?   16hp twin carb? Icon_minitimeSat May 25, 2013 8:49 pm

I have a 16hp twin and i have been having a heck of a time getting it running right. My question is, on the carb behind the drain plug is that a jet that can be screwed out. my problem is with it is it looks like some has went nuts on that jet with a screw driver. If it cant be removed i am going to have to drill and tap it for a jet from a motorcycle carb.

In the picture its the jet right where the tip of my screw driver is.

Thanks guys.

16hp twin carb? IMAG0717_zps9953faff
Back to top Go down
Doc Sprocket
Administrator
Administrator
Doc Sprocket

1000 Posts
1K Posts!

Age : 48
Join date : 2013-04-21
Posts : 2911
Forum Rep : 20
Location : Ontario Canada

16hp twin carb? Empty
PostSubject: Re: 16hp twin carb?   16hp twin carb? Icon_minitimeSat May 25, 2013 9:34 pm

Gah! No wonder it runs poorly, it's in dire need of a cleaning! That IS the main jet, should be accessible from outside the bowl. You may be able to clean it with a bit of fine wire. For removal, I believe it's a hex-head. I once had one that was so stuck, the hex stripped out. I removed it with a spiral fluted extractor. Then, I filed a couple slots in it so a large flathead screwdriver could be used for re-installation.

_______________________________________________
***Get YOUR official "Doc Locked, And Ready To Rock!" Stickers by clicking here!***
***Official Sprocket's Garage vinyl graphics and tees for sale HERE!***
16hp twin carb? Facebo12
Put down the wrench, and come out with your hands up!-Doc "Tranny Crusher" Sprocket, ATLTF Forum Admin, Thinkerer and Tinkerer, and all-around good dood. Wink

Gen. Mayhem- https://www.atltf.com/t2597-general-mayhem-race-tractor
MULE- https://www.atltf.com/t2153-lawn-boy-utltv
MULEII- https://www.atltf.com/t3328-1970-john-deere-112-the-beginnings-of-mule-ii
MULEIII https://www.atltf.com/t4263-mule3-brainstorming-ideas-etc#58287
Wrench, Wheel, Wreck, Repeat...
Back to top Go down
goesman
Screwdriver
Screwdriver
goesman


Age : 42
Join date : 2012-01-18
Posts : 119
Forum Rep : 0
Location : Salem, Mo.

16hp twin carb? Empty
PostSubject: Re: 16hp twin carb?   16hp twin carb? Icon_minitimeSat May 25, 2013 9:38 pm

cleaning is in progress. That jet looks like some tried to dig it out with a screw driver, its ugly. I found a parts diagram on this carb and there is no sign of this jet being removable. Guess i may have to drill and tap it.
Back to top Go down
redlinemotorsportts
Moderator
Moderator
redlinemotorsportts

3000 Posts
3k Posts!

Age : 24
Join date : 2013-03-18
Posts : 3127
Forum Rep : 3
Location : raleigh nc

16hp twin carb? Empty
PostSubject: Re: 16hp twin carb?   16hp twin carb? Icon_minitimeSat May 25, 2013 10:31 pm

clean it all up with break cleaner, that stuff works great for me!

_______________________________________________
Check out my builds!: MTD "Rock Bouncing" Mower -------- 60's Springfeild V-twin Mini Speed Tractor : SOLD!
16hp twin carb? Screen17
ATLTF.com Facebook admin - Forum Mod
whos mans is this
Back to top Go down
goesman
Screwdriver
Screwdriver
goesman


Age : 42
Join date : 2012-01-18
Posts : 119
Forum Rep : 0
Location : Salem, Mo.

16hp twin carb? Empty
PostSubject: Re: 16hp twin carb?   16hp twin carb? Icon_minitimeSat May 25, 2013 11:24 pm

I did it, I drilled and tapped it so i can use main jets from Keihn motorcycle carbs. And the good thing is i have a collection of those jets from my dirt bike i raced. And from several other motorcycle carbs i have worked on over the years. I think i will see how i can get it to run tomorrow. Some thing about carburetors, i really like working on them. I bet i have rebuilt a couple hundred of them.
Back to top Go down
Doc Sprocket
Administrator
Administrator
Doc Sprocket

1000 Posts
1K Posts!

Age : 48
Join date : 2013-04-21
Posts : 2911
Forum Rep : 20
Location : Ontario Canada

16hp twin carb? Empty
PostSubject: Re: 16hp twin carb?   16hp twin carb? Icon_minitimeSun May 26, 2013 6:58 am

Good work! What thread size and pitch do those Keihins use?

_______________________________________________
***Get YOUR official "Doc Locked, And Ready To Rock!" Stickers by clicking here!***
***Official Sprocket's Garage vinyl graphics and tees for sale HERE!***
16hp twin carb? Facebo12
Put down the wrench, and come out with your hands up!-Doc "Tranny Crusher" Sprocket, ATLTF Forum Admin, Thinkerer and Tinkerer, and all-around good dood. Wink

Gen. Mayhem- https://www.atltf.com/t2597-general-mayhem-race-tractor
MULE- https://www.atltf.com/t2153-lawn-boy-utltv
MULEII- https://www.atltf.com/t3328-1970-john-deere-112-the-beginnings-of-mule-ii
MULEIII https://www.atltf.com/t4263-mule3-brainstorming-ideas-etc#58287
Wrench, Wheel, Wreck, Repeat...
Back to top Go down
goesman
Screwdriver
Screwdriver
goesman


Age : 42
Join date : 2012-01-18
Posts : 119
Forum Rep : 0
Location : Salem, Mo.

16hp twin carb? Empty
PostSubject: Re: 16hp twin carb?   16hp twin carb? Icon_minitimeSun May 26, 2013 1:46 pm

I got it all put back together. took some playing with the jets. Actually it would cut out with the largest jet i had so i used a small drill bit to make it larger. Now the thing runs better then ever. Top rpm is higher, idle is great and it seems to have more power. I will take it out for a run some time soon, i need to get a battery for it.

I will let you know how it works.

Oh the tap size was a M5x0.8 for those jets.
Back to top Go down
Doc Sprocket
Administrator
Administrator
Doc Sprocket

1000 Posts
1K Posts!

Age : 48
Join date : 2013-04-21
Posts : 2911
Forum Rep : 20
Location : Ontario Canada

16hp twin carb? Empty
PostSubject: Re: 16hp twin carb?   16hp twin carb? Icon_minitimeSun May 26, 2013 5:47 pm

Top RPM is higher? You must have yanked the governor. I was going to offer to size the jet orifice for you, but it sounds like you're good to go. Right on!

_______________________________________________
***Get YOUR official "Doc Locked, And Ready To Rock!" Stickers by clicking here!***
***Official Sprocket's Garage vinyl graphics and tees for sale HERE!***
16hp twin carb? Facebo12
Put down the wrench, and come out with your hands up!-Doc "Tranny Crusher" Sprocket, ATLTF Forum Admin, Thinkerer and Tinkerer, and all-around good dood. Wink

Gen. Mayhem- https://www.atltf.com/t2597-general-mayhem-race-tractor
MULE- https://www.atltf.com/t2153-lawn-boy-utltv
MULEII- https://www.atltf.com/t3328-1970-john-deere-112-the-beginnings-of-mule-ii
MULEIII https://www.atltf.com/t4263-mule3-brainstorming-ideas-etc#58287
Wrench, Wheel, Wreck, Repeat...
Back to top Go down
Sponsored content





16hp twin carb? Empty
PostSubject: Re: 16hp twin carb?   16hp twin carb? Icon_minitime

Back to top Go down
 
16hp twin carb?
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
All-Terrain Lawn Tractor Forum :: Technical Forum :: Engine Tech :: Briggs and Stratton-
Jump to: