1986 honda 125 trike carb problem - Honda ATV Forum
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post #1 of 6 (permalink) Old 04-08-2011, 04:40 PM Thread Starter
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1986 honda 125 trike carb problem

I have a 86 125 Honda Trike that appears to be running rich. I was wondering if anyone knows what the mixture screw should be set at. What's happening is that ill clean the plug and put it back in and it fires up first pull but idles like crap and it smells rich after running it for like five minutes and shutting it off. The plug is black and wont start again till you clean It. If I turn the mixture screw all the way in it males no difference in how it runs if I screw it almost all the way out it stalls but but any amount of turns in makes no difference. Anyone have any clues for me
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post #2 of 6 (permalink) Old 04-08-2011, 04:47 PM
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The way I understand it u need a smaller pilot jet if that happens. The way you set ur mixture screw is. Get it idling. Turn the idle speed screw up a little bit like a couple 100 rps. Then turn the mix screw in. What ur looking for is the highest possible rpms you can find once u find that turn it a quarter turn back in. If that point is less than 2 turns from seat u need a smaller pilot. More than 3 turns from seat u need a bigger pilot jet. Ur looking for 2 1/2 turns roughly.

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post #3 of 6 (permalink) Old 04-08-2011, 05:01 PM
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Welcome to the forums. The initial setting for the 125 is 1 1/2 turns out from lightly seated. Turn the idle speed up to about 1,700 RPMs. Slowly turn the pilot screw in until the engine stalls, then back it out one full turn. If it doesn't stall and no one has messed with the jets, sounds like your carb needs cleaned. Check for a hole in the float or a sticking float needle or debris between the float needle and needle seat.

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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post #4 of 6 (permalink) Old 04-08-2011, 05:04 PM
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Haha i stand corrected! Didnt know different bikes get tuned different ways lol

07 416ex
Wiseco 87mm piston(fly cut for clearance)
Stg 2 magnum cam
Kibble white +1 valves (high rev springs+titanium retainers)
Crf450 t-chain
Cometic gaskets
Gt thunder hd studs
EBC DRC Clutch
PRM skid
Hmf full pipe
UNI filter + ehs powerlid
45 pilot, 1 3/4 turns, middle clip, 190 main
razr XC tires
Team Alba (bumper,nerfs,beadlocks,+2 lt arms)
Mod quad dash
Acerbies handguards
Msr ez pull lever
Oury grips
Fasst Flexx bars
TCS triple rate front shocks
PEP rear shock
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post #5 of 6 (permalink) Old 04-08-2011, 05:10 PM Thread Starter
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trike carb

Thanks guys ill give it a shot and see what happens
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post #6 of 6 (permalink) Old 04-08-2011, 05:29 PM Thread Starter
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