Airhead

is there a good flow of fuel to the carb? float height on these is 13-14mm

are we nearly there yet?

check the fuel flow to the carb is good and strong (filter gauzes in fuel tap / tank?)

That's a beast Alex, yeah sell the tiddler

how is it with choke on?

perhaps there is a cap concealing the bolt...either that or they just pushed in?

first thought is the fuel enrichment cct (choke) not working, not familiar with the bike , perhaps there's a fuel lift tube in the float bowl? perhaps theres a small orifice at the bottom of the tube, perhaps the small orifice is blocked, perhaps the crank seals are failing..all guess work really

do a compression test

cant imagine what the hole is for I have never seen one, it wont be for a fuel tap though will it...as the tap is way out front under the tank? the forum has a search box, you should see lots of threads asking about decals, such as https://yamahaclub.com/forums/search/?type=all&q=where+can+i+buy+decals

Hi Dan yeah they are correct for an American bike, you'll notice the side panels are also a different shape to the European bikes with that raised up part at the top front

the box on the oil tank is the ignition module mike

Greetings Justin

yeah we do like a DT or two Greetings

Good for you meatloaf, springtime too I'm envious I must say

Ohh yes, that's going to be nice Greetings

https://www.youtube.com/watch?v=biW9BbWJtQU

how about pressure testing somehow by applying pressure to the vent hose?

yes I could see that from the picture mate

Greetings to Pauls

y'know those bodily fluids you mentioned Foams, how can you be sure they were all your own...maybe you slept through something there...maybe the Gym monsters came upon you...in the gutter like

maybe a blocked idle jet? better still maybe a blob of water in the carb...is there a drain plug/screw on the carb bowl?

Looks good Paul, is that bike# 4?

Greetings Alan

you can put any oil designed for 4 stroke (motorcycle) engines or oil designed for 2 stroke transmissions, 10w40 will do

I said this 10+ days ago in invisible ink so it seems