I also found that starting using a single magneto minimises the risk of
kickback. For those already using a key switch there are 3 ways of
overcoming the problem:
1. Fit a starter push button in parallel with the existing key switch
2. Fit an extra switch to temporarily short out one magneto during
start. This will mean that the switch will have to be switched off again
after start.
3. Include a relay on the starter circuit which will short out a magneto
during start. This has the advantage of no changes to the panel
switches.
The newer starter will only fit the XS. This is because it is longer and
would interfere with the Classic engine mount.
Although kickback can occur with all variants of the Rotax the 912S
suffers the most due to the higher compression ratio.
Regards
Nigel Charles
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