general rule of thumb is get the bike to normal operation temperature, set the tickover sligtly higher than normal, say 1500 rpm max, then slowly screw in the air screw until the engine starts to slow, then screw out again and the revs should rise, continue screwing out slowly as the revs are rising, eventualy they wil start to drop again, screw back in to the point where the revs were at maximum and re set your, tickover.
Things to remember.
1. its cold at the moment, you bike will be running leaner than normal.
2. clean the air filter before doing this set up.
3. use a new spark plug.
4. as the weather warms up you WILL need to do this again.
5. this presumes that all other mechanical aspects of your bike are good.
6. if the procedure doesn't work it might be that you have the wrong size pilot jet in.
using this method i have set up more rev3's than i can shake a stick at, i'm sure the SY uses the same carb.
I spoke to a guy from the Bradford club in the pub on Friday night , he mentioned someone was filming their trial this weekend. Hope it went well guys.
before going much further you need to get someone in the know to have a look at these cases. unless they are broken through a machined face you can do a hell of a lot of repairs using moly metal. where about in the country are you?
start again, take the barrel off, make sure the ring gaps are on the pins and rebuild again, use a new head gasket or O rings (cant remember which your bike has) and a new base gasket (correct thickness). If you hav'nt changed anything else in the re-build the issue has to be in what you've done first time around.
DO lube the throttle cable with WD40 or GT85, most of it evaporates leaving only a fine covering of silicone or PTFE or some such substance., nowt to stick to.
I bet you bars are scored as well. only way to make it feel new is to replace parts, bars throttle tube, throttle cable and even in extreme circumstances the carb slide as well.
One great trick is to get a cable oiler Link below. just use WD40 or GT85 and plenty of it, it really makes a difference to the throttle.
I don't use any lube between the throttle and the bars, absolutely dry.use oil and it gets dirt in and becomes grinding paste. Just was it out with water, dry and replace.
no, its a case split i'm afraid. that being said its easy, it takes about 2.5 hours to split the motor and replace mains and seals. to blow the budget stick a piston and rings in at the same time.
Water Pump Corrosion
in Beta
Posted
build quality and trials bikes don't really go hand in hand unless you get a 4rt, that should set hares running!