throttle freezing on trailboss 250
#6
Check your airbox for leaks. My old trailboss throttle started sticking when the top of the airbox developed a crack where the bolts holds the airbox assembly together. This resulted in dirt getting in the carbeuratorc and engine. The first sympton was the throttle sticking.
#7
Griz was just a little bit ahead of me on that one. He is on the right track. The way to find out if that is indeed the trouble is to remove the airbox. You will see what looks like a screw top on the carb, it has a cable running through it, this is your throtle cable. Unscrew this top with the cable through it. Inside the lid is the throttle slide. It is a metal cylinder. If there is any sign of contamination on this cylinder you have a leak somewhere around the airbox or the carb. You can clean this piece off with WD-40 or the equivalent. Be sure to align it properly in the bore in the carb when reinstalling it so that in moves up and down freely. This is uncommon but I have seen it happen before. Good luck ..
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Kevin Gowdy aka Kagey 1999 Polaris Magnum 500
[This message has been edited by Kagey (edited 01-10-2000).]
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Kevin Gowdy aka Kagey 1999 Polaris Magnum 500
[This message has been edited by Kagey (edited 01-10-2000).]
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#9
I have some experience with a throttle freezing. I hope this isn't a throttle sticking, but a throttle freezing.
Last winter I had mine freeze almost wide open. Fortunately, the electric switch in the throttle control shuts the bike down if the throttle sticks or freezes.
The cause is water or condesation in the cable, oil control, or carb top. Pop the cover off the oil pump control. You should see any water or contaminants. Spray some WD-40 in this area to remove the water.
Then you can buy a Cable Luber at your dealer. This isn't a Polaris part, but most dealers should have one. You may be able to order it through the mail. Unfortunately, I don't think they make one big enough for the end of the Polaris throttle cable.
It is as big as a 9-volt battery. It has a metal case and a rubber inside. You slip the cable into the rubber and tighten the screw. This should seal the rubber around the cable and the end. I recommend you buy a 'pump oil can' which can develop a little pressure. Use transmission fluid or regular oil. Slowly pump oil into the hole on the Cable Luber. This will force oil into the cable. You may need to pull or push the cable to allow the oil to move through. It took me a half hour of messing around before I saw oil coming into the Oil Pump Case.
Don't stop there as your cable is a two way cable. You push the thumb on your throttle control and the pump and carb have separate cables which operate them.
So you have to keep oiling. Keep pushing it through. If you want to be really cautious you can pull the airbox off and look for the oil in the carb.
Don't worry about the oil in the carb, it won't do anything serious to your machine.
You should now have fully lubed cables and you shouldn't have any more freezing problems. I would recommend you do a full grease and change ***all*** fluids as condensation is a real problem in the winter as warm parts cool then warm up again. I have found that Hand Guards make a huge difference in keeping your hands warm and the throttle control from sticking.
While you have the Throttle cover open, soak it with oil as well.
Good Luck
RM
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99 400EX 95 Scrambler 400 85 LT250R
Last winter I had mine freeze almost wide open. Fortunately, the electric switch in the throttle control shuts the bike down if the throttle sticks or freezes.
The cause is water or condesation in the cable, oil control, or carb top. Pop the cover off the oil pump control. You should see any water or contaminants. Spray some WD-40 in this area to remove the water.
Then you can buy a Cable Luber at your dealer. This isn't a Polaris part, but most dealers should have one. You may be able to order it through the mail. Unfortunately, I don't think they make one big enough for the end of the Polaris throttle cable.
It is as big as a 9-volt battery. It has a metal case and a rubber inside. You slip the cable into the rubber and tighten the screw. This should seal the rubber around the cable and the end. I recommend you buy a 'pump oil can' which can develop a little pressure. Use transmission fluid or regular oil. Slowly pump oil into the hole on the Cable Luber. This will force oil into the cable. You may need to pull or push the cable to allow the oil to move through. It took me a half hour of messing around before I saw oil coming into the Oil Pump Case.
Don't stop there as your cable is a two way cable. You push the thumb on your throttle control and the pump and carb have separate cables which operate them.
So you have to keep oiling. Keep pushing it through. If you want to be really cautious you can pull the airbox off and look for the oil in the carb.
Don't worry about the oil in the carb, it won't do anything serious to your machine.
You should now have fully lubed cables and you shouldn't have any more freezing problems. I would recommend you do a full grease and change ***all*** fluids as condensation is a real problem in the winter as warm parts cool then warm up again. I have found that Hand Guards make a huge difference in keeping your hands warm and the throttle control from sticking.
While you have the Throttle cover open, soak it with oil as well.
Good Luck
RM
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99 400EX 95 Scrambler 400 85 LT250R
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