Model � 10A902 Type 2164B1 Code 060226511
Excuse the last couple of numbers on the code as my pencil notes from last night smudged a little.
I cleared the breather pipe and a little excess oil came out but nothing notable.
I re-checked the valve clearances and nothing seemed too far out to cause concern.
Inlet - .12mm
Exhaust - .15mm
I checked the keyway and it deffinately isn�t sheared.
I washed the valve chest cover in petrol and made sure it was clear of excess oil. Could a faulty cover cause these symptoms?
It is the model with the foam air filter above the carby, so no snorkel.
After clearing the breather pipe things changed a little. I know get a louder pop and smoke seems to be backfiring around the carby area. Its like a light puff of smoke coming from the whole engine. FYI � the head gasket wasn�t damaged upon removal.
Not something I have encountered before.