20 Most Recent 2003 Honda CR 125 R Questions & Answers

this bike has a power band , until you get over 2 to 3 thou revs it then it kicks in like a turbo boost ! does it rev freely in neuteral ?

use thread lock glue and 30 lbs , are they nylock nuts ?

sounds like a bent selector or you forgot a few parts ! lol....

do you have a spark ? plug out , put ht on and place on head and crank ! or the qwik test is hold plug in hand and crank ( slowly ) and you should feel small voltage !! honestly !!

is that with choke on ? as some times it can rise ? or is it a primer choke , then you may have a crack in intake manifold ? ! P...

vice grips , stud extractor , put 2 nuts on and tighten together and pressure the bottom nut off etc !

wot make of 2 stroke oil you using ? wot fuel oil mix ratio ? per gal use 2.5 oz with quality race oil !

do you have a dipstick on the filler cap or a bolt in the side case or a spy glass with two lines on it ? approx 1 ltr + or - !!

HI, IF IT IS FLOODED, TURN OF THE FUEL AND OPEN THE THROTTLE FULLY AND KEEP AT THIS POSITION WITHOUT THE CHOKE,KICK REPEATINGLY AND IT MAY FIRE EVENTUALY,

RREMEMBER THAT THE CHOKE INITIALY FLOODS THE ENGINE FOR COLD STARTING, SO USING THE CHOKE WHEN ALLREADY FLOODED WILL WORSEN THINGS,

YOU COULD PROBABLY REMOVE THE EXHAUST TO DISPENSE THE FUEL QUICKER AND PUT IN A CLEAN PLUG, I WOULD DO THIS BEFORE I STRIP DOWN THE CARB TO SEE IF THE PROBLEM CLEARS, AS THE BIKE WAS PREVIOUSLY RUNNING IT SEEMS ODD TO START MAKING ADDJUSTMENTS

ALWAYS have a fire extinguisher on hand when working on carburetors.
Drain the carburetor. There should be a screw on the lower side or bottom of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. Now pull the top cap off the throat of the carb and remove the large slide. There will be a long needle in the center of the slide. Remove the needle and then move the clip at the top on the needle down one notch. Two notches may be required but start with one notch. Put it all back together and try it out. Moving the clip downward richens the low end fuel mix.

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If it is efi then you will not have a choke as it is electronically controlled

Special Requirements

• Motocross bikes like the 1994 CR125 have a few special needs. If a motorcycle takes jumps, its orientation changes, so it has to have a carburetor sympathetic to that need. Otherwise, you may find yourself airborne with no fuel to make adjust the position of the bike by blipping the throttle or to make a smooth transition by rolling the throttle on when you land. Another consideration is that motocross bikes fall over more often the street bikes. So, they need a carburetor that can withstand a little abuse. The Keihin PJ 36 has a vertical plunger-choke, smaller and more protected than tab-chokes often found on street bikes, making less apt to get damaged if you tip the bike over, or pick up debris.

hi sounds like you are using wrong sparkplug. i had same problem. you need a BR9ES sparkplug. cos all other ones heat up too much and when your piston is hitting it it is burning a hole in the top.

sounds like you need to clean out the carburetta.

there is a little screw at the back of your carb next to your air box. kick your bike over and keep little revs on screw it clockwise (in) then start so slowly screw it anticlockwise (out) till your bike starts to rev a bit mor then release your throttle and it should tik over.