so my good old roadie seams to have a hard time waking up from her slumber. and i seen a post that someone had some tips but i cant find that thread. i have a sneaky suspicion that its the choke. i pull the choke out and its hard to start but as soon as its running and i push in the choke one click its like the choke is completely off (pushed all the way in) so i dont think its really being pulled all the way out. cause there is know difference in the other 3 detents unlike the stock carb that i could tell a difference with full, half, and off choke. or is this normal for a hsr . its the maxair choke cable??

oh and she coughs while i try and start

anyway 1700 with 167.5 main w/ yost, 25 pilot, 97 needle 3rd clip, pms 1.5 out, ported manifold, hypercharger, freedom duals, and my elevation is around 600 ft.

smokescreens wrote:
anyway 1700 with 167.5 main w/ yost, 25 pilot, 97 needle 3rd clip, pms 1.5 out, ported manifold, hypercharger, freedom duals, and my elevation is around 600 ft.

Jason, those are my jet settings as well (elevation 1,100). Same hard start you are experiencing on days where the temp is cool/cold. Over the winter I thought my battery would drain before she would finally crank over. With the recent warmer temps, she fires up instantly. Just the nature of the HSR I am guessing.

Mike

ok if its normal then so be it. but what tells the stock carb heater to turn on anyway? is it all in the brass plug for the stock carb or does the bike supply power to it automatically under 70 degrees?

go up one size on the pilot jet.You can go with a 27.5 or a 30.

davej wrote:
go up one size on the pilot jet.You can go with a 27.5 or a 30.

I thought about upping my pilot jet to see if it would help but haven't done it yet. Temps are warming up enough now that it shouldn't be too much of an issue.

it's just the way it is, and depending on outside temps, will determine how long to keep the choke, been in the low 60's here, choke off with-in a halfmile and fully hot a warm with-in 5 min. and as far as choke, it's either on or off for the hsr. As far as pilot, my belief is no need to go bigger than the 25.

I think one of the issues is that people tend to think that a carbed bike should be up and running perfectly in 2 mins. Ain't gonna happen! And the colder it is, the longer. Keep in mind, the FI bikes has the computer compensate by adding more fuel when it's cold and dictated by various sensors and will continuously monitor and make fuel adjustments as needed. Carb is manual operation, the trick is to only judge performance only after the bike is fully warmed, then learn how the bike reacts to when cold untill the point of fully warmed. Only time I do any adj. and that is only the pilot screw by richer 1/3 turn is in Jan to Mar.
there ain't no heater for the HSR, the stock carb heater there is a temp sensor behind the left side cover, that turns on and off the heater ckt.

Seems also a lot of people forget about the idle adjuster, regardless of carb and tend to use the pilot screw to dial it in. The 2 work hand in hand, the important thing is to have a start point. HRS tuning manual calls for 2 turns out on pilot screw, once the engine fully warmed will be final idle adjust. At that point you can do an optional pilot screw tweak by turning in till a change, then turning out to a change then set it in the middle of those 2 points. Now, since the bike is fully warmed, this is where the idle will be ideal. don't expect ideal for the first start of the morn tho.

I just installed my HSR and have not had a chance to get it perfectly tuned in yet. I have put a # 30 pilot in it, and it brought it my AFR #'s closer to what I want. I also went with a 175 main jet also needle on 4th groove. Not sure if I'm leaving that or going smaller with a 170-172.5. Right now with the larger Pilot jet my around town cruise AFR is right at 13.5 - 13.8 @ 40-45mph (I have an AFR gauge so I'm not guessing) and it starts fine not cold blooded. My hot idle AFR is around 13.5.

I get what you're saying Neil, but what I'm experiencing (and Jason too I think) is that the bike won't start until after several attempts when the temps are cool/cold. Just not what I ever experienced with the CV40.

davej wrote:
I just installed my HSR and have not had a chance to get it perfectly tuned in yet. I have put a # 30 pilot in it, and it brought it my AFR #'s closer to what I want. I also went with a 175 main jet also needle on 4th groove. Not sure if I'm leaving that or going smaller with a 170-172.5. Right now with the larger Pilot jet my around town cruise AFR is right at 13.5 - 13.8 @ 40-45mph (I have an AFR gauge so I'm not guessing) and it starts fine not cold blooded. My hot idle AFR is around 13.5.

thanks dave i think i may try that. i think i may be lean anyhow on the pilot my headpipe is turning golden but runs just fine on the road. i know i keep saying i want the a/f gauge but i think i need to move it higher on the list of future mods

Nature of the beast the choke on the HSR is on or off. I turn my fuel on and let ot sit for a bit then crack the throttle a couple of time to give it an accel squirt or two. Choke pulled out crank and ride for a mile or two and shut it off. Your jetting sounds good to me so just try that remember these are racing carbs. No one races a cold bike.