IPU Spring Starter - Dual Starting Engines

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Dual Starting Engines
See Appendix IV for important information.
Where the engine has the facility to be operated using two starters (electric starter and the IPU
starter), the IPU starter must have its pinion disengaged from the engine flywheel when the
alternative starter is being used. The pinion is disengaged by turning the winding handle in an
anticlockwise direction, until no further unwinding is possible. This also applies to vehicles fitted
with a IPU starter that are being ‘bump’ started e.g. forklifts, tractors.