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Old 06-23-2011, 05:20 PM   #1 (permalink)
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1986 TRX 350 Decompression lever.

HEy guys long time no chat! anyways, i got my bike rebuilt but i didn't change the decompression lever cable or the seal and well i got a major leak there, but what i was wondering if if i need to change that cable or not....I think i do because it is as tight as it will go, but as my bike is running that lever is moving with every RPM, and it sounds like an exhaust leak, but my exhaust is completely sealed up. so is that lever supposed to move like that or should it just be once in a while, i mean it ticks so much its annoying, i didn't notice it when i first put the motor in over the leaky exhaust but it seems like its loudd, so is it supposed to be like that or what? it wont be that expensive to replace it is but if i don't have to i wont, because funds are tight, so what i am asking is, is this noise normal? any input would be great!
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Old 06-23-2011, 06:43 PM   #2 (permalink)
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It shouldn't be moving at all. Sounds like you've got the cable adjusted too tight. The only time the cable should be pulling on the lever is when you're kicking the kick starter.
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Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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Old 06-23-2011, 07:38 PM   #3 (permalink)
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could that be why my bike will not idle after it warmed up?....it works fine while driving but as soon as i let off the gas it wants to die, i have to hold the brakes and keep on the gas to keep it running when im stopped. guess its time for a new cable and lever because the guy i got the motor from bent the hell out of that so i couldnt remove it when i took the top end apart.
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Old 06-23-2011, 08:07 PM   #4 (permalink)
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Quote:
Originally Posted by supergee19 View Post
could that be why my bike will not idle after it warmed up?....it works fine while driving but as soon as i let off the gas it wants to die, i have to hold the brakes and keep on the gas to keep it running when im stopped. guess its time for a new cable and lever because the guy i got the motor from bent the hell out of that so i couldnt remove it when i took the top end apart.
Yeah, that could be the reason it won't idle. When that lever is pulled, it holds open the exhaust valve a little, so you don't have as much compression. This makes it easier to kick start, but the cable is supposed to release the lever as soon as the kick starter returns. Low compression caused by the decompressor lever being pulled all the time could definitely cause it to not idle.
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Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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Old 06-23-2011, 08:17 PM   #5 (permalink)
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I'm pretty sure that you should be able to pry that bracket back out a touch,and adjust the cable out a turn,or two,,,,
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Old 06-23-2011, 08:21 PM   #6 (permalink)
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When you adjust the cable, you should have about 1/16 to 1/8 inch of play at the lever before the cable starts pulling the lever. By the way, you have to adjust the cable with the piston on TDC on the compression stroke, just like when you're adjusting the valve clearance.
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Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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Old 06-24-2011, 03:32 AM   #7 (permalink)
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ok thats no biggie then, time my bike up again align all the marks like i did when i put the head back together, and as for prying that lever apart, i tried that when i was taking it apart. The guy mangled it so that why i just left it alone. but i still have the parts to my old motor so ill just get this lever out and see what my other one is like. thanks for the input guys, ill gett he parts today and fix er tomorrow and let ya know how it goes! thanks again!
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Old 06-26-2011, 05:21 PM   #8 (permalink)
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I think I may have an issue with my cable as well, where is it located? And the adjustment procedure?
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Old 06-26-2011, 05:31 PM   #9 (permalink)
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I think I may have an issue with my cable as well, where is it located? And the adjustment procedure?
Click the image to open in full size.
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Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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