smarty156 Posted March 4, 2017 Report Share Posted March 4, 2017 I've removed the head on my 2014 300 Racing GasGas as I suspect he o rings were leaking. The head is very black and coke up (see attached). What's the best way to clean it? Top of the piston is also black - is it possie to clean that without taking anything else apart as I don't really have time to do that. Thanks. Quote Link to comment Share on other sites More sharing options...
mrturtle Posted March 4, 2017 Report Share Posted March 4, 2017 Oven cleaner. 1 Quote Link to comment Share on other sites More sharing options...
paulmac Posted March 4, 2017 Report Share Posted March 4, 2017 Clean head with WD40 and a fine Scotchbrite pad. For piston top - pack some soft tissue around edge then do same. Carefully remove tissue and blast with air. A foot pump will do it. Not a solution found in any 'how too' but works more times than not in an emergency. Quote Link to comment Share on other sites More sharing options...
stan wellback Posted March 4, 2017 Report Share Posted March 4, 2017 6 hours ago, mrturtle said: Oven cleaner. oven cleaners eat alloys. Quote Link to comment Share on other sites More sharing options...
dadof2 Posted March 4, 2017 Report Share Posted March 4, 2017 HG stove glass cleaner does a brilliant job and removes the oil / coke well before it starts to damage the alloy. It takes several minutes to shift the coke but several hours to start to mark the alloy. Quote Link to comment Share on other sites More sharing options...
smarty156 Posted March 4, 2017 Author Report Share Posted March 4, 2017 Thanks all. Quote Link to comment Share on other sites More sharing options...
totalshell Posted March 5, 2017 Report Share Posted March 5, 2017 non metallic pad.. no liquid.. raise piston to top.. put a sear of vaseleine round edge to capture any debris.. and scrub away.. when finished lower piston and wipe away vaseline and debris with dry cloth.. wipe everything with thin clean oil.. sorted. Quote Link to comment Share on other sites More sharing options...
smarty156 Posted March 5, 2017 Author Report Share Posted March 5, 2017 Thanks. Also, any tips for holding new head o rings in place while refitting? Quote Link to comment Share on other sites More sharing options...
paulmac Posted March 5, 2017 Report Share Posted March 5, 2017 Same Vaseline you've just used to seal the piston/bore gap. You might need to give the o rings a little stretch first, the often come up a bit small. Quote Link to comment Share on other sites More sharing options...
smarty156 Posted March 5, 2017 Author Report Share Posted March 5, 2017 Thanks again. Quote Link to comment Share on other sites More sharing options...
mbeers6 Posted March 6, 2017 Report Share Posted March 6, 2017 Here you go.... Quote Link to comment Share on other sites More sharing options...
smarty156 Posted March 6, 2017 Author Report Share Posted March 6, 2017 28 minutes ago, mbeers6 said: Here you go.... Perfect. Thanks. Quote Link to comment Share on other sites More sharing options...
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