Hi - new here, did search of topic found no details on airbox removal. 2001 150 USA model with carbon canister - all hoses appear good, no kinks etc. 1,600 miles. Factory Service Manual basically says to remove trunk, handles, all surrounding plastic, then saddle airbox cover just to get to the airbox.
Is this really the case? Please - any "quick" ways or shortcuts just to get the airbox out? I need to pull carb to clean it out. A bit of bogging at cracked throttle until warmed up.
Tried Seafoam and Gunk carb cleaner in gas, fresh premium gas etc. But I've only run about 1 gallon through so far. It does run better but not as good as I think it can and should run just up from idle.
I set air mixture screw to 2 1/2 turns out (was at 3 1/8 when I checked it). Runs way better at 2 1/2. Factory setting is 2 1/4 but it was a little fluffy there when fully warmed up. 2 1/2 is crisp. Carb slide is new - I installed (yes without airbox removal - I have shorty screwdrivers). There were signs of the dreaded cracks forming on the slide but no missing slide pieces. Aside from the bog after bystarter signs off and when cracking the throttle until warm, the scooter runs really really good.
Factory pilot jet is a 38 per the factory manual, so an upgrade I've read about for other models from a 35 to a 38 seems irrelevant.
Should I leave the bog alone (do they all do that???) or, when properly clean is the cracked throttle a nice transition from idle to on the needle/main as revs rise in stock form? Idles approx. 1800-2000 when Bystarter activated, then goes down to 1500 or so until warmed up, then revs are about 1600.
More info: Starts with just a whiff of starter - immediate starting. New Battery 12.75 V resting, New Air Filter with fresh No Toil oil on it. New Spark Plug properly gapped and tightened. New oil (amsoil) and oil filter, new rear-end fluid and AGIP coolant. Bike is clean - no damage or apparent abuse. The scooter will do an indicated 80 mph and is at least 10% optomistic. It will do at least 65 in real mph based on traffic speed and radar signs I've been watching. Plenty quick and snappy when warmed up - no complaints there!
I haven't checked Bystarter ohms or voltage at connector, or how quickly the bystarter extends. The Bystarter seems to sign off after 1 min 30 seconds because the initial higher idle drops at that point in time. I can't get the bystarter out of carb (or rather the tiny screw loose) with airbox in way. I assume a bit of the pilot circuit is clogged? Or is there a seperate starter circuit clogged that's in effect as Bystarter extends (but starting idle is higher so this circuit seems to work). It sat for many months before I just got it. May be a slim chance the slide is not rising smoothly but revs and runs perfectly when warmed up.
Also, after fully warmed up, then shut down for an hour or two or four, I can go out and even though not fully warmed up (just none, or one or two tick marks on temp gauge) there will be NO bog at cracked throttle. If the scoot sits overnight, there will be a bog after initial start idle drops and the throttle is cracked. Warmed up is after 2 tickmarks up from bottom on gauge, then thermostat appears to kick in and it stays there a bit before gradually rising to 1/2 way on the temp gauge. Fan kicks in two tick marks from the top mark on gauge - temp never gets close to red.
EDIT - All fuel here is E10 10% Ethanol blend. Also, a valve adjustment has not been done to my knowledge.
Lots of detail but...hoping it will save time. Need airbox out quickly and thoughts on warmup bog at cracked throttle.
Thanks in advance!!!!