Register free!
Search
 
     

The Green Industry's Resource Center


Click for Weather
Reply
 
Thread Tools Display Modes
  #1  
Old 03-31-2009, 05:00 PM
duffman301 duffman301 is offline
LawnSite Member
 
Join Date: Mar 2009
Location: Albany ny
Posts: 20
Scag Tiger Cub Cranks But Wont Start

I have a Scag Tiger Cub with 21 hp Kawi and 48 inch deck. It is my back up mower and it has approx 1950 hrs. Today i went to the garage to service the machines and all of the started but the scag. I changed the plugs and cleaned the air filter and still it wont run. The motor does crank. If i spray started fluid into the air box the mower will run for a second and then die. I assume this means that the engine is not getting fuel? Maybe the fuel pump is bad? if anybody can offer me any guidance on fixing this problem i would appreciate it. The mower ran perfect when i parked it last fall.
Reply With Quote
  #2  
Old 03-31-2009, 05:11 PM
ALC-GregH's Avatar
ALC-GregH ALC-GregH is offline
LawnSite Fanatic
 
Join Date: Mar 2008
Location: PA
Posts: 7,053
Try tapping on the pump and on the carb. The float might be stuck.
Reply With Quote
  #3  
Old 03-31-2009, 08:00 PM
ed2hess's Avatar
ed2hess ed2hess is offline
LawnSite Fanatic
 
Join Date: Nov 2002
Location: Austin Texas 78727
Posts: 11,657
On some engines that have pumps you can pull of the line between the pump and carb and see it throws gas. Just take plug wires off. Did you say you put on a new fuel filter?
Reply With Quote
  #4  
Old 03-31-2009, 08:35 PM
DRBLawnBuster DRBLawnBuster is offline
LawnSite Senior Member
 
Join Date: Feb 2009
Location: strongsville ohio
Posts: 833
Carb might need cleaned as well, if it starts when you spray stuff in there then it means its not getting gas. I would pull the carb off and clean it really good. Also you may wanna pull the fuel pump off and make sure thats all clean because its what helps push the fuel into the carb. With the fuel pump i belive there is a diagprahm gas kit and even if it has the slightest little tear it will be the differnce between pumping fuel to the carb and not ( as i have found out).
Reply With Quote
  #5  
Old 03-31-2009, 08:52 PM
EagleGrounds's Avatar
EagleGrounds EagleGrounds is offline
LawnSite Senior Member
 
Join Date: Feb 2009
Location: Cincinnati, Ohio
Posts: 402
Sounds like a snapped fly wheel, but you really need to slam on the truck breaks hard todo that. I broke my ztr's flywheel last year.
Reply With Quote
  #6  
Old 03-31-2009, 09:17 PM
J&R Landscaping's Avatar
J&R Landscaping J&R Landscaping is offline
LawnSite Fanatic
 
Join Date: Dec 2005
Location: Bensalem, PA
Posts: 5,096
Quote:
Originally Posted by EagleGrounds View Post
Sounds like a snapped fly wheel, but you really need to slam on the truck breaks hard todo that. I broke my ztr's flywheel last year.
Hopefully this post was a joke...

I'll be the first with a couple dumb suggestions...

Is there gas in the tank(s)?

Do you have an shut-off valves turned on and selecting the correct tank?

Next check would be the fuel pump check and then cleaning the carb like others have said. You might also try removing the fuel caps off both tanks. You may have vapor lock taking place.

Did you make sure you have fuel comming through the new fuel filter you replaced? Sometimes, if you clamp the fuel line, you can get an air pocket in the fuel line that would cause the engine to not get fuel.
__________________
Joe
J&R Lawn and Landscaping
23 years old, Fully licensed and insured. 50+ accounts
2011 8x16 Pace Summit trailer
2010 Exmark TTHP 17/48
04 Exmark Viking 32"
96 Exmark Metro 36"
Echo, Redmax, and Shindaiwa handhelds. Husky chain saws.
2010 F-350 4x4 6.4 PSD w/ 8' Western plow.
1997 F-250 4x4 7.3 PSD
2004 Bobcat 61" 25hp ZTR for sale. 1100 hours, Under 10 hours on a TOTAL DECK REBUILD! PM for details
Reply With Quote
  #7  
Old 03-31-2009, 09:17 PM
borwicks's Avatar
borwicks borwicks is offline
LawnSite Senior Member
 
Join Date: Dec 2007
Location: Council bluffs, IA
Posts: 615
If it fires up with carb cleaner or something similar its fuel related. If it was a flywheel it would not start. fuel filter, fuel pump. Start removing hoses from the tank forward where ever fuel is you know its got it. pull the bowl on the carb, check the float. this is all simple stuff. best of luck.
__________________
WWW.borwicks.com You cant control people and weather but you can be tolerant and respectful.
Reply With Quote
  #8  
Old 04-01-2009, 09:41 AM
EagleGrounds's Avatar
EagleGrounds EagleGrounds is offline
LawnSite Senior Member
 
Join Date: Feb 2009
Location: Cincinnati, Ohio
Posts: 402
Quote:
Originally Posted by J&R Landscaping View Post
Hopefully this post was a joke...
No sorry, i was dead serious, i snapped the fly wheel lock in my ZTR engine last year, and i think it was because i made a sudden stop in my truck, which cause it to move and snap past the lock, causing the fly wheel lock to snap.


sorry i forgot lock in my first post......
Reply With Quote
  #9  
Old 04-01-2009, 10:11 AM
ALC-GregH's Avatar
ALC-GregH ALC-GregH is offline
LawnSite Fanatic
 
Join Date: Mar 2008
Location: PA
Posts: 7,053
Quote:
Originally Posted by ed2hess View Post
On some engines that have pumps you can pull of the line between the pump and carb and see it throws gas. Just take plug wires off. Did you say you put on a new fuel filter?
DO NOT take the plug wires off if your pulling the fuel line off. That's a fire waiting to happen if you start cranking it over.

Do what others have said. Take the fuel line off the carb and crank it to see if fuel flow is there. If it is then the carb is blocked with fuel varnish. If you still don't have flow. Work your way to the tank.
Reply With Quote
  #10  
Old 04-01-2009, 11:03 AM
betmr betmr is offline
LawnSite Bronze Member
 
Join Date: Mar 2009
Location: Piscataway, NJ
Posts: 1,663
My guess is you put it away with gas in it. That gas has formed Varnish & obstructed the fuel ports in the carb. Time to take the carb apart and clean it really good.
At the end of the season, take out your owner's manual, and do what ever it says for storage. Save yourself a lot of trouble. Do it for ALL your machines. There is a reason they outline storage procedures.
Reply With Quote
Reply

Tags
cub , scag , tiger

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump





Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Moose River Media
All times are GMT -4. The time now is 09:36 AM.

Page generated in 0.09630 seconds with 7 queries