British term (flat)

[66Alpine]

hey everyone,

I am trying to get my 150cd strom's synchronized and the manual( workshop) 3 flats = 1/4 turn... Now the manual says to turn the throttle screw 2 and 1/4 turns... Is a turn 360degrees as it would seem logical to me or am I misconstruing American terminology with British terms?

any help would be appreciated... Thanx,

Johnny

 

[Wombat]

Johnny,

I would read "flat" as one flat of the hexagon screw (1/6 turn). I cannot find that term used in my manuals (Probably different to the one you have)

The procedure that worked for me with my Hillman Hunter GT (essentially the same engine as the Series V) was:

Loosen the connecting bolts on the linkage between the two carbs
Back off both idle speed screws so they are clear of the stops.
Screw the idle speed screws in until they just make contact with the stops (you pick this by putting a piece of paper between the screw and the stop)
Screw the idle screws in by 2 full turns (full 360 deg turns)
Start the engine and synchronise the carbs by small adjustments on one or the other idle screws (maybe 1/8 of a turn at a time and let the engine settle)
When both carbs are making the same hiss as you hear it in the rubber hose, or have the same reading on the synchronising meter, stop the engine and tighten the connection on the linkage and adjust idle speed to what seems right (850 - 900 rpm)

Then go for a drive and enjoy it!

 

[Green67Alpine]

Robert, Thanks for explaining that in an elementary method, Hey I think I understand it

Tom J

 

[Jeff Scoville]

Just remember though, if your valves are not adjusted correctly it will be impossible to sync the carbs.

 

[66Alpine]

the flat turn

Thank you Robert for the info about the flat turn.. I will give it a shot tomorrow.

Johnny

 

[Wombat]

Just remember though, if your valves are not adjusted correctly it will be impossible to sync the carbs.

Wholeheartedly agree with Jeff on this. The order I did things in a tune up was:

Clean/replace points
Set ignition timing
Set valave clearances
Set/check mixture
Synchronise Carbs.

 

[mikephillips]

When you think of 3 flats = 1/4 turn, think of an 8 sided nut, which is what I recall the adjustor being.