Having removed the flywheel and stator plate to renew the cam belt and put it altogether, I thought that I might have the timing incorrectly set and that this would account for the lack of performance above 60Kph in 6th gear, as described in my previous opening message thread. I invested in an Acuspark timing strobe and following the instructions had it fitted up to the 125H after warming the engine through and the results have mired me further.
![Embarassed :oops:](./images/smilies/icon_redface.gif)
With no mechanical tacho working, I used the inbuilt tacho in the strobe and at a steady 'fast idle' of ~1,500rpm the ANT mark on the flywheel is ~3° to the left of the central 'dot' on the top edge of the crankcase. I increased the rpm to ~6,000 and the ANT mark remained in the same position, neither moving to the right or left of the upper crankcase mark in the strobe light?
![Confused :?](./images/smilies/icon_confused.gif)
Mystified, I spoke with Stuart at NLM, who was courteous and helpful, but suggested that I might have more experience than he with the 125H!
![Shocked :shock:](./images/smilies/icon_eek.gif)
I intend to move the stator plate anti-clockwise, slightly, so that the ATM mark aligns itself with the upper crancase mark, rather than appearing to be ~3° retarded before TDC when running at ~1,500rpm. But I still can't get my head round the lack of variability in the timing of the spark. With this strobe I can set an advance value to a tenth of a degree when viewing the marks, but I'm not sure how this helps when setting the ignition timing.
![Embarassed :oops:](./images/smilies/icon_redface.gif)
Thank you for taking your time to read another tale of woe.
My regards, Bill