Standard Operating Procedure

[Tim754]

SL125 engine complete on bench.
133cc bore fitted, Check
High dome high comp piston and rings    Check
Polished and enlarged intake and exhaust port head fitted  Check
Fit "non standard" camshaft and heavy valve springs check
Enlarged manifold and 26mm carby   Check
Fresh gaskets all round     check
Valve and ignition timings set.  Check
Check Fresh oil , points and spark plug  Check
New fresh charged battery  Check

 Fit engine back in frame and kick over...........uncheck....  bent  valves......Fitted incorrect high comp piston, should have been the one with the valve cutaways................   

S O P    Look in mirror at a dickhead!!! Check...

[evo550]

 
Heads will roll, who ever wrote that S.O.P. obviously didn't consult the W.M.S or M.S.D.S. I don't know why you work there

[Tim754]

Weapon (of) Mass Stupidity   or    Me Stupid Dumb Shit ?

[oldyzman]

Sorry to hear that tim, just for my own future experience- did you turn over the engine first by hand with no plug fitted?
Brett

[Tim754]

Sorry to hear that tim, just for my own future experience- did you turn over the engine first by hand with no plug fitted?
Brett
Yes in this case  you could turn over Brett, the clearance is very tight and I usually have the rockers backed well off just in case. Naturally I had to re-adjust them early....then lay the heavy boot on the kickstart. Of course you can get pistons that will be way to high and lock up the engine even on plugless hand crank. If in doubt do leave the rockers loose and hand crank .That is best practice for sure. PS With these small four modified four strokes, the rocker/valve clearance will have to be increased from standard    

[Tim754]

Disregard . Found  fabricated (not be me) brass bushing for camshaft had collapsed ,locking cam and sending piston into stuck open valve.  Ahh such is life .....but it's still rooted    Cheers.

Having a terrible time getting the 754 ready for HBBB , the electric starter button not working, damn have to  give a couple of jabs on the kickstart to start , Top job on list fix or replace said switch button.