Agreed to shitty plastic coating on the outer Pipercrap mesh is all lifting on mine too & coming away in places, this is the side facing the motor, so if any breaks loose, it'll go straight thru the carbs & motor, not impressed, threw the bastid thing in the bin, Hi-flrow paper filters from now on, got an old one nearly as new, so that's now in, new filter ordered ready for next service.
Carbs got a full strip this time, mainly to inspect the 4 air cut valves, 3 of which are buried between the carb joints, expected em to be shagged, but all in good order, just needed a good clean.
Splitting 4 carbs apart for the 1st time in 23yrs was a bit of a challenge, those 2 foot long bolts were solid, defo snapping if I tried to break em loose cold, I had to cook the carbs with hot air gun on full juice, used Deblock penetrating fluid, left em to soak & cool down, bolts cracked loose on 2nd heat cycle, had a bit of a "Oh fuck" moment when they cracked loose, thought I'd snapped one for sure, all factory O-rings were in half decent shape but a little too loose a fit for my liking, so went down a size but up in thickness, new O'rings are a nice snug fit with a smear of silicon grease on em, I've a selection box of NBR O-rings so used these throughout, bit of a faff re-joining 4 carbs back together, I found it easier to join 2 outer carbs to 2 inners, so I had 2 pairs, then only had the 1 centre join to contend with on final assembly, those little but very strong linkage springs were very fiddly & easy to fire across the garage.
Refitted carbs to bike.
Stripped pump to eliminate any crap being inside, found some black gunk, that looked exactly like what came out the float bowl drains on strip.
Also all fuel pipes had some crap lodged inside too, scrubbed em all out with a stiff bottle brush till I saw clean brake cleaner when flushing em thru, no clue where this black crap has come from? might have been in there from factory & just broke loose now, it was after the filter.
Reassembled pump, fitted pump, crank no start ... "Oh Bollox", quick check to see I'd left nowt off, "Petrol" Derrr ..."OFF", crank still no start ... WTF now?
Checked pump, not priming when kill switch is flick on.
Pulled pump back off, found points didn't look quite right, so pulled em all apart, found the centre flippy bit that runs off the pump centre shaft, looked a little worn & had poor engagement into the pump shaft slot, took it apart, filled it all smooth & re-bent the points mounting frame to give more flippy bit engagement, cleaned up points mating faces, yet another fiddly twat to assemble, found the easy method after a few WTF's, point all now in perfect alignment which they weren't before, pump clean a whistle, carbs clean as a whistle, hoses clean as a whistle, new filter, new fuel.
Crank ...... Yayyy she runs again. down tools for dinner & big thank fook thats done sigh.
Carbs got a full strip this time, mainly to inspect the 4 air cut valves, 3 of which are buried between the carb joints, expected em to be shagged, but all in good order, just needed a good clean.
Splitting 4 carbs apart for the 1st time in 23yrs was a bit of a challenge, those 2 foot long bolts were solid, defo snapping if I tried to break em loose cold, I had to cook the carbs with hot air gun on full juice, used Deblock penetrating fluid, left em to soak & cool down, bolts cracked loose on 2nd heat cycle, had a bit of a "Oh fuck" moment when they cracked loose, thought I'd snapped one for sure, all factory O-rings were in half decent shape but a little too loose a fit for my liking, so went down a size but up in thickness, new O'rings are a nice snug fit with a smear of silicon grease on em, I've a selection box of NBR O-rings so used these throughout, bit of a faff re-joining 4 carbs back together, I found it easier to join 2 outer carbs to 2 inners, so I had 2 pairs, then only had the 1 centre join to contend with on final assembly, those little but very strong linkage springs were very fiddly & easy to fire across the garage.
Refitted carbs to bike.
Stripped pump to eliminate any crap being inside, found some black gunk, that looked exactly like what came out the float bowl drains on strip.
Also all fuel pipes had some crap lodged inside too, scrubbed em all out with a stiff bottle brush till I saw clean brake cleaner when flushing em thru, no clue where this black crap has come from? might have been in there from factory & just broke loose now, it was after the filter.
Reassembled pump, fitted pump, crank no start ... "Oh Bollox", quick check to see I'd left nowt off, "Petrol" Derrr ..."OFF", crank still no start ... WTF now?
Checked pump, not priming when kill switch is flick on.
Pulled pump back off, found points didn't look quite right, so pulled em all apart, found the centre flippy bit that runs off the pump centre shaft, looked a little worn & had poor engagement into the pump shaft slot, took it apart, filled it all smooth & re-bent the points mounting frame to give more flippy bit engagement, cleaned up points mating faces, yet another fiddly twat to assemble, found the easy method after a few WTF's, point all now in perfect alignment which they weren't before, pump clean a whistle, carbs clean as a whistle, hoses clean as a whistle, new filter, new fuel.
Crank ...... Yayyy she runs again. down tools for dinner & big thank fook thats done sigh.