just set my ignition timing using the bulb method and the only way I could get the bulb to light up on the F mark on both sets of points was to have the main backplate advanced as far as possible (anticlockwise) and then each of the points backplate advanced (anticlockwise again) to the end of their slots!
checked the T marks and and pistons at TDC where they should be!
have got the bulbs to light on 1+4, and 2+3 on their F marks but should I have everything so advanced?
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ignition timing Z1A
Moderators: KeithZ1R, chrisu, paul doran, Taffus
skibs wrote:try checking the condition of the points & gap.worn or pitted points can easily throw them.also tight gap will retard timing,wide will advance.
just for reference,adjust gap on one set of points & recheck timing for those cyls.suprising what difference it makes.
they're brand new points skibs, gaps set at 0.35mm
just wondering if the advance/retard mechanism is faulty.......but then TDC would surely be wrong and it's spot on
had the very same problem last year
z1bman
ZedHead
Joined: 03 Mar 2010
Posts: 686
Location: dudley west midlands
Posted: Sat Aug 13, 2011 7:04 pm Post subject:
ok so i spent nearly 2 days at my friends earlier this week trying to sort this ignition problem. we replaced the complete back plate assembly with a genuine Kawasaki part. we fitted the back plate checked the points gap without adjusting anything . points gap was 14 thou. started the bike checked the timing with strobe light. timing was 10degrees out tried to adjust by turning the back plate + could only get it to fire 5 degrees before the F mark without elongating the holes in the back plate there was no other way of getting it to fire in the right position. we did try filing the heel of the points bit by bit until there was virtually no heel left on the points . this did absolutely nothing. we checked the advancer marks in relation to TDC+ this was spot on. after a lot of working things out i have come the the conclusion that the the problem is with the advancer cam. this is in the wrong position when fitted to the advancer shaft. the 2 slots which are machined into the cam were the advancer bob weights are located have been machined in the wrong place. this is why so many people are running theirs with elongated holes in the back plate + running with an excessively wide points gap
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z1bman
ZedHead
Joined: 03 Mar 2010
Posts: 686
Location: dudley west midlands
Posted: Sat Aug 13, 2011 7:04 pm Post subject:
ok so i spent nearly 2 days at my friends earlier this week trying to sort this ignition problem. we replaced the complete back plate assembly with a genuine Kawasaki part. we fitted the back plate checked the points gap without adjusting anything . points gap was 14 thou. started the bike checked the timing with strobe light. timing was 10degrees out tried to adjust by turning the back plate + could only get it to fire 5 degrees before the F mark without elongating the holes in the back plate there was no other way of getting it to fire in the right position. we did try filing the heel of the points bit by bit until there was virtually no heel left on the points . this did absolutely nothing. we checked the advancer marks in relation to TDC+ this was spot on. after a lot of working things out i have come the the conclusion that the the problem is with the advancer cam. this is in the wrong position when fitted to the advancer shaft. the 2 slots which are machined into the cam were the advancer bob weights are located have been machined in the wrong place. this is why so many people are running theirs with elongated holes in the back plate + running with an excessively wide points gap
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