Jonker Sailplanes JS1 Series, Flight Manual, Page: 63 / 101

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 31.03.2016
Accepted section Page 5–33
5.2.1.2. No idle speed
Error Description:
The RPM did not reach idle RPM after a pre-set time interval (factory
default is 30 seconds). As a result the start sequence was terminated.
Possible Causes:

Fuel valve not open

No fuel in fuel tanks

No fuel in start or main fuel lines – priming required
Pilot action required:

Check that fuel valve is in the Open position

Attempt to restart (if priming is required, up to 4 attempts are
normal)