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i own a 1975 skiddoo tnt. it has a 440 engine but has trouble running. I prime it three times to start and usually first pull starts it. I go ridding for about 10 min. and the thing starts to bog down on me to the point where it stalls completely. i can prime while it is about to die and manage to keep it running a little longer until it dies. I need help i have no clue i am pretty sure it is lack of fuel but don't know if it is carb or fuel pump. thanks for your help.
 

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Have you check for any crimp or bad fuel lines?
that motor have a TILLESON HR carb or a MIKUNI?
If its a tilleson you need to change the diaghrams on the bottom of the carb. on these carbs that is the fuel pump.
If your running a mikuni carb it needs a good cleaning, if that doesnt help, change (or rebuild if you can) the fuel pump.

try those and let us know whats up.
 
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