Green Laner

[Stirlingmoz]

Got the carb back from the machine shop this morning.

The broken float pin was successfully removed. The short remnant had to be drilled out apparently.



Glad I had it done professionally as I’m sure I would have broken something with my ham fisted attempts.

Time to crack on and rebuild them now

 

[Stirlingmoz]

Had a little time this afternoon and began to build the carburettors up.

I’ve done this job a couple of times before but Steve Scrimingers book is a bit of a comfort blanket to ensure everything is as it should be..

 

[Stirlingmoz]

Bike no startee

We have coughs and bangs but no fire up.

Wheeled back indoors - battery back on charge..



Quick check over.

Compression - tick - just over 110psi both cylinders, (though not v accurate with carbs fitted but a decent indicator.

Spark - tick good strong spark on both cylinders. Static timed with led - should be in the ball park.

Fuel - question mark First thing to check I think. Did I assemble the carbs and in particular the enricheners correctly ?

It would be boring if this were easy

 

[Stirlingmoz]

Removed left carb.

The new float bowl gasket has split already
It’s only been on 1 day !



Checked the enrichener and its correctly sided and oriented - nice and clean.

Noticed there is no jet in the bottom of the float bowl.



Not sure if that will cause a problem ?

I can transpose some bowls from the G/S and see if that makes any difference

 

[Stirlingmoz]

Ran out of time today but swapping float bowls from a running bike made no difference. Pops and bangs but no fire up.

Because this engine is rebuilt from the crank up I have confirmed that when the pistons are at the top of their travel, the OT line is in the timing window. This confirms the flywheel is fitted correctly.

Having gone back through photographs, I’m confident of the crank / cam timing



Going to recheck valve clearances next but I’m leaning towards a carb / fuel problem.

 

[Gelandestrasse]

Fuel in the tank? On reserve just in case?

 

[Bubb]

Tappets checked?
Butterfly’s in the right way round, as I’ve heard they can be assembled incorrectly…..?

 

[DrFarkoff]

Scoot some easy start in there and spin it over!

NB "A Sniff of" not a lot of!

 

[Stirlingmoz]

Fuel in the tank? On reserve just in case?

I don't have a tank for it

I just filled the float bowls with fresh fuel.

I do have a remote tank so will dig that out and plumb it in for the next attempt.

 

[Stirlingmoz]

Tappets checked?
Butterfly’s in the right way round, as I’ve heard they can be assembled incorrectly…..?

Will check both before next attempt

 

[Stirlingmoz]

Scoot some easy start in there and spin it over!

NB "A Sniff of" not a lot of!

Good call - but it’s not easy trying to keep the butterfly open, cv piston raised and press the starter button all at the same time.

Will try and rope son in once I’ve done some more checks

 

[DrFarkoff]

Good call - but it’s not easy trying to keep the butterfly open, cv piston raised and press the starter button all at the same time.

Will try and rope son in once I’ve done some more checks

Meh!! AmmmyChewer!!

Intake trumpets off

Press starter

Squirt a scoosh of easy start each side as you spin it and give it a little throttle too!