Damp and cold starting

Id organised a group fly out .. not too far .. just Tibenham (literally next door) and Great Oakley

As it was Rememberance day and a memorial service at Tibeham we needed to be on time

For the first time ever i think … the Jab refused to even fire

Not one cough .. just cranked until.the battery eventually went flat .. leaving it to cool between cranks !

Subsequent return a few days later .. batteries recharged and a heater used ro chase away moisture and damp PLUS a small singe squirt of easy start amd BOOM .. into life !

Clive (James) one of our super helpful and friendly club members .. also very experienced in Jabirus .. offered some useful.fine tuning advice

On a Bing carburettor (commonly found on BMW Airhead motorcycles, Rotax engines, and some snowmobiles), the idle mixture screw controls the air-fuel ratio at idle by metering fuel into the idle circuit. • Turning the screw IN (clockwise) restricts fuel flow → leaner mixture. • Turning the screw OUT (counter-clockwise) allows more fuel → richer mixture.To make the mixture richer: Turn the idle mixture screw OUT (counter-clockwise).Standard adjustment procedure (for reference):

1 Warm up the engine fully.

2 Set idle speed slightly high using the throttle stop screw.

3 Turn the mixture screw in until the RPM drops (too lean), then out until peak smooth RPM is reached.

4 Typically, the richest smooth idle is found ¼ to ½ turn out from the peak RPM point (to avoid running too rich and fouling plugs).

5 Reset final idle speed.Note: Some Bing carbs (e.g., Type 53/54 on BMWs) have the mixture screw on the side; others (e.g., Type 64 CV) may have it underneath. The direction is consistent: out = richer.