Warm temperature upgrade kit

[Drifter]

Hi Everyone
The Drifters been left in the barn for about 5 years, but my son would like to ride it now. It was abandoned there because it would overheat and bog out in warmer weather. Just wondering if anyone has the upgrade kit that wrapped the lower motor and air vents in hood etc. To help run cooler or if anyone has made there own fan or something to keep it running cooler.
1979 340 Drifter
Thanks
Drifter
Edit. I’m looking at marine bilge blowers to ventilate under hood

[Interceptor398]

This is on Ebay now but is for ST440-A2 Intruder  PN  99970-3508.  The 1979 340 Drifter (SA340-A3) needs cooling kit PN 99970-3510.  I would clean the carb and make sure there are no air leaks and no air bubbles in the gas line while it is running.  I have a 340 Drifter and it has never come close to over heating but then I don't get to ride it much.  Also is the fan belt in good condition?

https://www.ebay.com/itm/1978-83-kawasaki-snowmobile-COOLING-KIT-ST440A2-99970-3508-14/352401050262?hash=item520cbd4a96:g:VdYAAOSwI-dbQ9SE

[Drifter]

Thanks Interceptor
I did clean the carb last time I had it out. I do recall seeing fuel in pulse line last time I was working on it (5 years ago). I either rebuilt or replaced fuel pump and it still had fuel in it.  It seemed to run good in cold weather till it heated up.. maybe I should look at this again.  If there is air bubbles in fuel line this might be suggesting air leak in tank pick up or anywhere else and starving for fuel or ?
Thanks for the suggestions

[Interceptor398]

The plunger primers are known for leaking air and if they are you will see air bubbles in the lines while the sled is running.  Another thing can be the crank seals if they are still the original ones.